baber/WOPTO huggingface dataset:
Patent CS-220132-B1 (CS)
Inventor: ZAVERKA OTTO
IPC: G01V1/16
Filed: 1981-10-20
Abstract: Zapojení pro geofyzikální seismický prů­
zkum s využitím synchronních seismických
záznamových zařízení. Účelem vynálezu je
zvětšit počet geofónů geofónové sítě, zvýšit
násobek překryvu měření a přitom zefektivnit
a zhospodárnit průzkum. Vytyčeného ú-
čelu se dosahuje spojením nejméně dvou
synchronních seismických záznamových za­
řízení mezi sebou a s roznětným zařízením
a kombinovaným připojením geofónů geofónové
sestavy na jejich seismické vstupy.
Každá krajová geofónová podsestava je zapojena
přes krokový přepínač na samostatné
synchronní seismické záznamové zařízení.
Každá vnitřní geofónová podsestava je
zapojena přes krokové přepínače na dvě
sousední seismická záznamová zařízení. Geofónové
podsestavy mohou být uspořádány
za sebou a vedle sebe. Zapojení je využitelné
v geofyzikálním seismickém průzkumu
do velkých hloubek, především při průzkumu
na tekuté a plynné uhlovodíky a na
pevné užitkové nerosty.
Patent CS-229376-B1 (CS)
Inventor: KOTOC STEFAN ING CSC
IPC: F01N13/10
Filed: 1982-11-26
Abstract: Vynález ae týká výfukového potrubí přeplňovaného
spalovacího motoru pozůstávajícího
alespoň z jedné vysokotlaké a
nízkotlaké větve.
Podstata výfukového potrubí podle vynálezu
spočívá v tom, že nízkotlaká a vysokotlaké
větev jaou spojeny společnými přírubami,
z nichž každá propojuje nízkotlakou
a vysokotlakou větev a přísluěnými
výstupy od výfukových ventilů. Nízkotlaká
a vysokotlaká větev mohou být vedeny ve
dvouproudovém potrubí, v němž jsou obě
větve odděleny společnou nepropustnou
přepážkou. Mezi společnými přírubami je
vysokotlaká nízkotlaková větev tvořena
segmentovými částmi, která jsou suvně
spojeny pomocí lícovaných vnějěích a
vnitřních ploch a těsnících kroužků.
Patent CS-233632-B1 (CS)
Inventor: BLAZEK MOJMIR
IPC: B27B3/10
Filed: 1982-11-27
Abstract: Vynález se týká uspořádáni rámové
pily umožňující automatické nastavování
velikosti výkyvu vodítek pro vedení pilového
rámu v závislosti na velikosti
plynulého posuvu výřezů i předklonu pilového
rámu rámové pily. Podstata vynálezu
spočívá v tom, že kulisa (13) výkyvná na
hřídeli (23) svým ramenem (14) spojeným
s táhlem (15),které je druhým koncem uchyceno
na čepu (21) tělesa (11) otočných
spodních vodítek (9), je spřažená se suportem
(24) pro vodorovný posuv tělesa
(rll) otočných spodních vodítek (9), spojeným
s dvouramennou pákou (16) otočnou
na čepu (22), připojenou ke spojovací tyči
(17), která svým druhým koncem je
spojena se šoupátkem (18) kulisy (13),
přičemž na konci šoupátka (18) je připojena
přídavná ojnice (12) excentricky
uložená na hlavním hřídeli (28) rámové
pily (1).
Vynález najde uplatněni v dřevařském
průmyslu
Patent CS-231272-B1 (CS)
Inventor: FILIP RADOSLAV
IPC: C03B21/02
Filed: 1982-12-02
Abstract: Vynález řeší problém kontinuálního
dělení skleněných nebo obdobných tažených
tyčinek nebo trubiček na krátké kousky,
tzv. sekanici, k výrobě skleněných nebo
obdobných perliček, kuliček a pod.
Podstata vynálezu spočívá v tom, že při
tažení se na tyčince nebo trubičce vytvoří
vrub, načež se tyčinka nebo trubička
mechanicky namáhá a dělí v místě vrubu.
Výhodou způsobu dělení podle vynálezu
je zvýšení produktivity, úspora investic
a energie, omezení ztrát suroviny a
zvýšení jakosti sekanice a tudíž i výsledných
výrobků.
Využití v oboru bižuterie a technického
skla.
Patent CS-244244-B1 (CS)
Inventor: SLEZAK KAREL
IPC: H02P27/05
Filed: 1984-12-17
Abstract: Řešeni se týká zapojení elektrického
regulačního pohonu, sestávajícího z bloku
přímého měniče střídavého napětí, opatřeného
polovodičovými spínači, například tyristory
nebo triaky, jehož vstup je připojen
na zdroj střídavého napětí, který je současně
připojen na vstup generátoru pilového
napětí, a jehož výstup je připojen na
napájecí svorky asynchronního motoru,
přičemž generátor pilového napětí je výstupem
připojen na vstup bloku řídících
obvodů, jehož výstup je připojen na řídicí
vstup bloku přímého měniče střídavého napětí.
účelem řešení je zajištění správnosti
řízení přímého měniče střídavého napětí
i v přechodových stavech elektrického regulačního
pohonu, například při reverzaci
smyslu točivého magnetického pole asynchronního
motoru. Uvedeného účelu se dosáhne
tím, že generátor pilového napětí je připojen
jak na vstup tak i na výstup bloku přímého
měniče střídavého napětí a aproximuje
průchod diference napájecího napětí ze
zdroje střídavého napětí a indukovaného napětí
asynchronního motoru pomocí exponenciálního
úseku průběhu pilového napětí na výstupu
generátoru pilového napětí.
Patent DK-170213-B1 (DK)
Title: Imidazo[2,1-a]isoquinoline derivatives, a process for preparing them, pharmaceutical preparations which comprise the compounds, and also the use of the compounds
Inventor: HOULIHAN WILLIAM JOSEPH
IPC: A61K31/435
Filed: 1988-03-14
Granted: 1995-06-19
Abstract: Compounds of formula I <CHEM> wherein each R independently is hydrogen or methyl R1 is in 8- or 9-position and represents hydrogen, chloro, fluoro or C 1-3alkyl and R2 represents thienyl, furyl or <CHEM> wherein each Ro represents independently hydrogen, fluoro, chloro, C 1-10alkyl, C 1-10alkoxy or C 1-10alkylthio or one Ro is hydrogen and the other represents tri-(C 1-3alkyl)silyl, trifluoromethyl, phenyl, monochlorophenyl, monofluorophenyl, <CHEM> wherein X, Y, R3, R3' or R4 are as defined herein or two Ro's on adjacent carbon atoms form methylenedioxy. The compounds are indicated for use in treating PAF-mediated bronchocontriction and extravasation
Patent DK-167383-B1 (DK)
Inventor: GOETTSCHE REIMER
IPC: B27K3/52
Filed: 1986-06-06
Granted: 1993-10-25
Abstract: 1. A concentrate for impregnating solid wood in order to preserve the latter, based on a copper salt and monoethanolamine and, if required, a salt with a fungicidal anion, wherein the concentrate contains from 5 to 50% by weight of monoethanolamine and, if required, further alkali such that a pH of not less than 8 is established.
Patent DK-167690-B1 (DK)
Inventor: HECHENBERGER DIETER ANTON
IPC: C09J133/00
Filed: 1988-12-12
Granted: 1993-12-06
Abstract: An adhesive composition, of the 'instant adhesive' type, comprising:      (a) from 77 to 95% by weight of monomeric 2 min -ethoxyethyl 2-cyanoacrylate; (b) from 3 to 15% by weight of a poly-(C1-5)alkyl acrylate or methacrylate having an average molecular weight within the range of from 400 000 to 600 000;   (c) from 2 to 8% by weight of hydrophobic fume silica; and   (d) from 100 to 1000 ppm by weight of a polymerisation stabiliser; overcomes a number of disadvantages associated with currently available 'instant adhesives' (such as high volatility, brittle adhesive bond, poor resistance to heat and unpleasant smell) and it has the advantages that it cures rapidly and can be used on porous substrates.
Patent DK-174722-B1 (DK)
Title: Mfg. hydrocarbon material esp. heavy crude oil or bitumen
Inventor: IGNACIO A LAYRISSE R
IPC: C09K23/00
Filed: 1988-12-22
Granted: 2003-10-06
Abstract: Prepn. of a naturally occurring viscous hydrocarbon material for further processing comprises: (a) with an emulsifier, forming a 1st hydrocarbon-in-water emulsion (I) with H2O content at least 15 wt.%, max, viscosity 5000 cP at 122 deg. F and max. oil droplet size 300 microns; (b) degassing emulsion (I) at a temp. as low as 95 deg and min pressure 20 psi with min. degassing efficiency 90%, to produce an emulsion (II) contg. less than 5 cu. ft./bbl. of gas; (c) adjusting the density difference between the phases of emulsion (II) to be at least 0.002 g/cc at temp. T which is at least equal to 15 deg.C below the cloud point of the emulsifier used in (a); (d) breaking the density-adjusted emulsion (III) in a separator at temp. T, and recovering the hydrocarbon material; (e) re-emulsifying the hydrocarbon material using an emulsifier, and conditioning it for further processing so as to form a 2nd stable hydrocarbon emulsion (IV) suitable for transportation; and (f) transporting emulsion (IV). Breaking a hydrocarbon-in-water emulsion comprises essentially steps (c), (d) and (e) of (A).
Patent FI-104125-B1 (FI)
Inventor: LEISSE ALFONS
IPC: F23D1/02
Filed: 1994-04-19
Granted: 1999-11-15
Abstract: A burner for burning pulverulent fuel with combustion air divided into concentric partial flows has a primary-air tube (6) which carries primary air or primary gas and fuel and is surrounded by a secondary-air tube (12) carrying secondary air. The primary-air tube (6) is surrounded by a flow-directing device (26) at the discharge end inside the secondary-air tube (12) while forming an annular gap (25). Secondary air flows through the flow-directing device (26), which is open on both sides and projects beyond the primary-air tube (6) in the axial direction by an amount which corresponds to a value of up to 25% of the outside diameter of the primary-air tube (6). The width of the annular gap (25) is at least equal to 1.5% of the outside diameter of the primary-air tube (6). <IMAGE>
Patent IE-56475-B1 (IE)
Title: Combination container for two liquids
IPC: B65D81/32
Filed: 1985-05-29
Abstract: The combination container consists of a concentric double receptacle, wherein a mounting (5) for the second receptacle (2) is attached at the periphery of the aperture of the first receptacle (1) by means of notches or undercuts, eg in the manner of a bayonet closure. This mounting (5) is provided with a central aperture (10) having an internal thread (11) which fits onto an external thread located on the neck of the second receptacle (2). Perforations or apertures for pouring out the liquid contained in the first receptacle (1) are provided in the mounting (5). Moreover, the apertures of the first receptacle (1) and the central aperture in the receptacle (2) can be closed by a common screw cap (12). The first receptacle (1) consists as a rule of a canister of square or rectangular cross-section, while the second receptacle (2) can be a commercially available plastic bottle of the same height. After filling the two receptacles with different liquids, eg crop protection liquids, a metal laminated plastics film (14) may seal the apertures. Spikes (15) on the screw cap maybe used to pierce the film (14), a sealing disc (18) of foamed polyethylene carried by the cap acting to seal the inner receptacle and prevent any unintentional mixing of the liquids.
Patent IE-33341-B1 (IE)
Title: Tetrahydronaphthalene derivatives and process for their manufacture
IPC: B01J23/00
Filed: 1969-10-10
Abstract: Compounds of the formula RZ ANGLE C ANGLE PhA ANGLE C PARALLEL X in which Ph represents an ortho-phenylene radical which contains in position 4 or 5 an unsubstituted or substituted hydrocarbon radical of aliphatic character, R represents a lower alkyl radical or especially a hydrogen atom, Z represents a free, esterified or amidated carboxyl group, A represents an ethylene radical and X stands for two hydrogen atoms or especially for an oxo group, are useful as chemotherapeutic and prophylactic agents against pain and inflammation.
[US3968142A]
Patent IE-55254-B1 (IE)
Title: Gas meter
IPC: G01F15/14
Filed: 1984-06-07
Abstract: The gas-meter has a measuring unit with casing forming two measuring compartments. Each of these is divided by a diaphragm into two chambers, while a distribution surface contains four ports, each connected to a chamber by an internal passage. A moving distributor is mounted on the surface, being coupled by levers to the diaphragms.   The casing comprises a central block, to which two side covers are fixed. The block incorporates all the components forming the internal passages.
Patent IE-53190-B1 (IE)
Title: Esters of 2-thenoylmercaptopropionylglycine with substituted hydroxybenzenes,process for their preparation and pharmaceutical compositions containing same
IPC: C07D333/38
Filed: 1982-06-22
Abstract: Esters of 2-thenoylmercaptopropionylglycine with substituted hydroxybenzenes, having general formula  wherein R is p-acetamidophenyl, p-propyloxy carbophenyl or o-alkyloxycarbophenyl wherein the oxyalkyl radical contains 1-4 carbon atoms, are prepared by reacting 2-thenoylmercaptopropionylglycine with an alkylchloroformate thus obtaining a mixed anhydride which is reacted with the proper substituted hydroxybenzene selected among p-hydroxybenzeneacetamide, propyl p-hydroxybenzoate and alkyl o-hydroxybenzoate. These esters are useful therapeutical agents as mucolytic and antiinflammatory agents.
Patent IE-51383-B1 (IE)
Title: Indanone-oxyalkyl-piperazine derivatives,their preparation,and pharmaceutical formulations containing these compounds
IPC: A61K31/495
Filed: 1981-07-10
Abstract: For the Contracting States : BE, CH, DE, FR, GB, IT, LI, LU, NL, SE 1. A compound of the general formula (I)  see diagramm : EP0043971,P14,F1  where R**1 is hydrogen or hydroxyl, R**2 is chlorine, fluorine, methoxy or methyl and the oxyalkyl-piperazine side chain is in the 4-, 5- or 7-position of the indan-1-one ring system, and its physiologically tolerated addition salts with acids. For the Contracting State AT 1. A process for the preparation of a compound of the general formula (I)  see diagramm : EP0043971,P15,F1 where R**1 is hydrogen or hydroxyl, R**2 is chlorine, fluorine, methoxy or methyl and the oxyalkyl-piperazine side chain is in the 4-, 5- or 7-poistion of the indan-1-one ring system, and its physiologically tolerated addition salts with acids, wherein an indanone derivative of the formula (II)  see diagramm : EP0043971,P15,F2  where A is  see diagramm : EP0043971,P15,F3  B being a nucleofugic leaving group, is reacted, in a conventional manner, with a piperazine derivative of the general formula (III) see diagramm : EP0043971,P15,F4  where R**2 has the meanings given for formula (I), advantageously in a solvent and in the presence or absence of an acid acceptor, and, if desired, the resulting compound is converted into its addition salt with a physiologically tolerated acid.
Patent IE-59377-B1 (IE)
Title: A method for controlling weeds
IPC: C07D233/90
Filed: 1986-06-30
Abstract: 5-Imidazolecarboxylic acid derivs. of formula (I), stereoisomers and salts are new, where R1=H or SH; R2=H, 1-7C alkyl, 3-7C alkenyl or alkynyl, 1-7C alkoxy-1-7C alkyl, aryl-1-5C-alkyl or 3-7C cycloalkyl; and X=1-indanyl, 1-tetrahydronaphthalenyl, 5-benzocycloheptanyl, 4-tetrahydrobenzothienyl, 4-tetrahydrobenzofuryl, 5-tetrahydroquinolyl, 5-tetrahydroisoquinolyl, 8-tetrahydroquinolyl, 8-tetrahydroisoquinolyl, 9,10-dihydro-9-anthracenyl, 9H-fluoren-9-yl, 5-dibenzo(a,d)cycloheptenyl, 5-dibenzo(a,d)cycloheptanyl or 1-dihydronaphthanenyl, each opt. substd. by 1-6 of 1-5C alkyl, mono- or di-aryl-1-5C-alkyl, 1-5Calkoxy, halogen, 3-7C alkenyl, NH2, NO2, 1-6C alkylcarbonylamino, CF3 or OCF3, where 2 geminal substits. together with the C atom may form a 3-7C cycloalkyl gp; where 'aryl'=phenyl opt. substd. by 1-3 or 1-5C alkyl or alkoxy, or halogen; provided that x is other than unsubstd. 1-indanyl or unsubstd. 1-tetrahydronaphthalenyl. - New herbicidal compsns. and methods employ (I) where x may be unsubstd. 1-indanyl or 1-tetrahydronaphthalenyl.
Patent IE-41458-B1 (IE)
Title: 1,3,4-thiadiazole-2-ylureas
IPC: C07D285/135
Filed: 1975-08-25
Abstract: A group of new 1,3,4-thiadiazol-2-ylureas are characterized by a cyanoalkyl group at the 5-position. The alkyl group to which the cyano group is attached is always branched, and is preferably branched at the carbon atom adjacent to the ring. The compounds are also characterized by small alkyl or alkoxy groups on the urea nitrogens. The new compounds are outstandingly effective herbicides and are also effective, when used at low application rates, in the control of plant pathogens.
Patent IE-45792-B1 (IE)
Title: Flameproofed polyamide compositions
IPC: C08K3/22
Filed: 1977-10-10
Abstract: Polyamides flameproofed with red phosphorous and including cadmium oxide as an additive to retard the formation of phosphine during heating are disclosed. The polyamides are particularly useful in the manufacture of electrical components.
Patent IE-40124-B1 (IE)
Title: Pyrazino-isoquinoline derivatives
IPC: C07D471/14
Filed: 1974-11-18
Abstract: 1441554 Pyrazino-isoquinoline derivatives MERCK PATENT GmbH 12 Nov 1974 [17 Dec 1973] 48861/74 Heading C2C Novel compounds I (in which--COR is an acyl radical containing up to 26 carbon atoms derived from an unsubstituted or substituted aliphatic, cycloaliphatic cycloalkylaliphatic, araliphatic or heterocyclic carboxylic acid or a substituted aromatic carboxylic acid) are preparedby cyclizing a compound II (in which X is F, Cl, Br, I, mesyloxy or 6-10 C arysulphonyloxy); by reduction of a compound III (broken line indicates an optional double bond) or by replacement of one substituent R by another substituent R by known methods. Anthelmintic compositions comprise a compound I together with a suitable carrier or diluent.
[GB1441554A]
Patent IE-40426-B1 (IE)
Title: Liquid, solvent-free aromatic polyisocyanates which contain carboxyl and/or carboxylate groups
IPC: C07C239/00
Filed: 1974-11-29
Abstract: Liquid organic polyisocyanates containing carboxyl and/or carboxylate groups are prepared by reacting liquid multicomponent mixtures of aromatic polyisocyanates having an isocyanato content of about 10 to about 20% by weight and a viscosity of about 8 cP to about 10,000 cP at 25 DEG C with A. A COMPOUND WHICH CONTAINS CARBOXYLATE GROUPS AND HYDROGEN ATOMS WHICH ARE REACTIVE WITH ISOCYANATE GROUPS; OR B. A HYDROXYCARBOXYLIC OR MERCAPTOCARBOXYLIC ACID, WHEREBY BA. AT LEAST PARTIAL CONVERSION OF THE CARBOXYL GROUP INTO THE CORRESPONDING CARBOXYLATE GROUP BY NEUTRALIZATION WITH A BASE IS CARRIED OUT SIMULTANEOUSLY WITH OR AFTER THE ISOCYANATE ADDITION REACTION OR BB. THE HYDROXYCARBOXYLIC ACID OR MERCAPTOCARBOXYLIC ACID IS OF THE KIND IN WHICH THE CARBOXYL GROUPS ARE MUCH LESS REACTIVE WITH THE ISOCYANATE GROUPS THAN ARE THE HYDROXYL OR MERCAPTO GROUPS, THE QUANTITATIVE PROPORTION OF THE REACTANTS BEING SO CHOSEN THAT THE PRODUCTS OF THE PROCESS HAVE AN ISOCYANATE CONTENT OF 10 TO 40% BY WEIGHT AND A CARBOXYL OR CARBOXYLATE GROUP CONTENT OF 0.1 TO 10% BY WEIGHT. The polyisocyanates can be used to make inorganic-organic plastics.
[US3959348A]
Patent IE-52483-B1 (IE)
Title: Cooling arrangement for forming tools
IPC: C03B9/38
Filed: 1981-10-23
Abstract: A cooling arrangement for use in a machine for treating a thermoplastic material, especially molten glass, for cooling a split forming tool, parts of which are mounted on the machine for pivoting about a first pivoting axle, by a pressurized cooling fluid, especially air, includes at least one supply conduit stationarily mounted on the machine and operative for supplying the cooling fluid, and at least one articulated connecting conduit extending between the supply conduit and a respective fluid distributing means mounted for joint pivoting with the forming tool parts about the first pivoting axle, each articulated connecting conduit having at least two components one of which is pivotally mounted on a second pivoting axle arranged at the supply conduit, and the other of which is connected to the one component by a third pivoting axle for relative pivoting and is pivotally mounted on the fluid distributing means for pivoting relative thereto by a fourth pivoting axle, the first, second, third and fourth pivoting axles being parallel to one another. Sealing gap forming seals may be used for sealing the articulated conduit components, the supply conduit, and the fluid distributing means with respect to one another when the cooling fluid is a low-pressure gaseous fluid.
Patent IE-46108-B1 (IE)
Title: Cutting device
IPC: B26D1/00
Filed: 1977-12-15
Abstract: A cutting device for cutting sheets of material wherein a cutting member co-operates with a bed of upstanding pins which support the sheet. Although the cutting member may be a knife, it is preferably composed of a line of upstanding pins which are sufficiently long to penetrate through the material to be cut and to enter the bed of upstanding pins. The cutting device may comprise two drums mounted for rotation in opposite senses about parallel axes, one drum carrying the cutting member and the other the bed of pins, the tips of the pins being aligned with the cylindrical surface of their associated drum.
Patent IE-54122-B1 (IE)
Title: N-substituted ergoline-and 9, 10 didehydroergoline-8-carboxamide- and - 8-amonomethyl derivatives, their production and their pharmaceutical compositions
IPC: A61K31/48
Filed: 1982-11-03
Abstract: Novel N-substituted ergoline- and 9,10-didehydro-8-carboxamide- and -8-aminomethyl-derivatives for the treatment of vascular headaches, especially migraine, and of orthostatic hypotension.
Patent LU-101287-B1 (LU)
Title: Reinforcement module for an insulated concrete wall and construction method
Inventor: KERT STANISLAUS
IPC: E04C5/16
Filed: 2019-07-03
Granted: 2021-01-20
Abstract: The invention provides a construction system comprising an attaching element with two opposite notches, a first module (4) and a second module (4) similar or identical to the first module. Each module (4) comprises: a main direction (8); four separate bars (10) projecting along the whole module (4) with respect to the main direction (8), each bar (10) comprising at least one strip (26), several connecting plates (12) perpendicular to the main direction (8) which connect the bars (10) and which are distributed along the main direction (8), at least one of the connecting plates (12) comprises a passage (54) with an inner edge. The inner edge of the at least one of the connecting plates or strips of the bars being in the opposite notches (80) for fixation purposes. A construction method is also provided.
Patent LU-102062-B1 (LU)
Title: Method for manufacturing highly-adaptive green scale inhibitor and composite scale inhibitor thereof
Inventor: HAN YANLEI
IPC: C02F5/14
Filed: 2020-07-20
Granted: 2021-07-09
Abstract: The present invention provides a method for manufacturing a highly-adaptive green scale inhibitor and a composite scale inhibitor thereof, the method comprises the following steps: uniformly mixing a dibasic acid polymer and a composite ionic liquid to prepare a mixed catalyst; adding the mixed catalyst and aspartic acid into a reactor, heating to 170°C to 220°C with stirring to carry out a thermal polycondensation for a period of 50 min to 4 h, to get a mixed reaction solution; after standing, suction filtering the mixed reaction solution to get polysuccinimide; slowly adding NaOH solution into the polysuccinimide obtained from the above step, hydrolyzing at a temperature of 25°C to 50°C for 0.5 h to 2 h, adjusting the pH of the hydrolysate to below 4.0 to terminate the reaction; adding an excessive amount of ethanol, standing and then suction filtration to get polyaspartic acid. In the technical solution of the invention, the thermal polycondensation of aspartic acid is catalyzed with a nonphosphorus catalyst, the resulting polyaspartic acid product is non-toxic and can be used in combination with a variety of scale inhibitors, with the scale inhibition efficiencies all above 90% and the corrosion inhibition efficiencies all above 65%.
Patent LU-102750-B1 (LU)
Title: Printable smart tag
Inventor: DE WINTER FRANK
IPC: G06K19/077
Filed: 2021-04-06
Granted: 2022-10-06
Abstract: A printable electronic tag, a method of configuring the tag for use and a method of tracking tag status in use are disclosed. The tag comprises a flexible data processing substrate layer overlaid by a flexible printable top layer. The substrate layer includes a power source, at least one sensor for monitoring one or more parameter(s) in the environment adjacent the tag, a data interface for receiving calibrating parameter(s), a memory storing a unique tag identifier and the received calibrating parameter(s), a processor and a visual user interface for indicating a status alert or an absence thereof. The processor receives sensed environmental data, compares it with the calibrating parameter(s), and selectively outputs an alert signal to the visual user interface according to the comparison result, wherein the visual user interface is observable through flexible printable top layer in use. The unique tag identifier is recorded in a digital distributed ledger and data exchanged between the tag and a reading terminal is recorded in the ledger against the unique tag identifier.