baber/WOPTO huggingface dataset:
Patent NL-2025066-A (NL)
Title: Soft switching modulation of single-phase quasi-z-source rectifier without auxiliary circuit
Inventor: QIANFAN ZHANG
IPC: H02M7/219
Filed: 2020-03-05
Abstract: This invention proposes a soft-switching modulation of single-phase quasi-Z-source rec- tifier without auxiliary circuit. This invention solves the problems that an auxiliary resonant circuit are needed and power switches with higher voltage capacity are also needed. The modulation is achieved based on a single-phase quasi-Z-source rectifier. A switch S7 is a quasi-Z-source power switch. Switches S1-S4 are four power switches in a controlled rectifier H bridge. When the switch S7 is turned off, the system works in shoot-through state. When the switch S7 is turned on, the system works in non-shoot-through state. In shoot-through state, a quasi-Z-source inductor discharges a quasi-Z-source capacitor through free-wheeling diodes in the H bridge. The free-wheeling diodes are turned on, so the voltage across each power switch in the H bridge is clamped to zero. The power switches can be turned on and turned off in a zero-voltage switching manner. When the currents of the quasi-Z-source inductors work in critical or discontinuous state, each switch can be turned on and turned off in the zero-voltage switching manner or a zero-current switching manner. The modulation proposed in this invention can achieve the soft-switching technology without any auxiliary circuit only by designing a proper quasi-Z-source inductance.
Patent NL-2025554-A (NL)
Title: Culture medium for increasing growth rate and stress resistance of esteya vermicola and preparation method of culture medium
Inventor: XIANGYAO ZHANG
IPC: C12N1/14
Filed: 2020-05-11
Abstract: The present invention discloses a culture medium for increasing a growth rate and stress 5 resistance of Esteya vermico/a and a preparation method of the culture medium and belongs to the technical field of microbial culture. The culture medium for increasing the growth rate and stress resistance of Esteya vermico/a disclosed in the present invention includes 170 - 230 g/L of potatoes, 15 - 25 g/L of glucose, 17 - 23 g/L of agar, 0.05 - 0.15 g/L of glycine and 4 - 6 g/L of calcium chloride. The culture medium in the present invention can shorten a growth cycle of 10 Esteya vermico/a, increase spore production of the Esteya vermico/a, particularly increase a ratio of crescent spores capable of adhering and causing death of Bursaphe/enchus xylophi/us, and increase drought stress and ultraviolet stress resistance of the spores in a natural environment.
Patent NL-2031217-A (NL)
Title: Novel preparation method of nano metallic rubidium
Inventor: ROUYING LI
IPC: B82Y40/00
Filed: 2022-03-09
Abstract: UITTREKSEL The present disclosure provides a preparation method, of metal rubidium nanosol, including: placing a metal rubidium in an organic solvent, and deoxidizing the organic solvent; under a protective gas environment, heating a deoxidized organic solvent 5 to melt the metal rubidiun1 into a liquid, state in the organic solvent; and under the protective gas environment, breaking and dispersing a liquid metal rubidium in the organic solvent using an ultrasonic wave to obtain the metal rubidium nanosol. The preparation Inethod, has a simple process to guickly’ prepare the 10 Inetal rubidium. nanosol, and, a preparation. device is simple for convenient storage, transfer and transportation of the metal rubidium nanosol.
Patent NL-2033734-A (NL)
Title: Fully automatic frozen poultry chopping apparatus
Inventor: WENJING LI
IPC: A22C21/00
Filed: 2022-12-16
Abstract: The present invention relates to a fully automatic frozen poultry chopping apparatus, comprising a machine body, a freezing device, a pushing device, a conveying device, a 5 cleaving device, a precision cutting device, a meat scrap processing device, and a discharging device, the freezing devices are two freezers capable of discharging built-in gas and liquid symmetrically placed on two sides of the machine body, the conveying device is a conveyor belt ﬁxed above the machine body, and the freezing device and conveying device penetrate through the whole cutting and chopping stroke, 10 the pushing device is located on the left side of the machine body and is used for pushing frozen poultry to the cleaving device, the cleaving device comprises a lateral electric band saw, the precision cutting device comprises several cutting and chopping blades with an adjustable spacing ﬁxed to the right of the machine body. 15
Patent NL-6500885-A (NL)
IPC: F25J1/00
Filed: 1965-01-22
Abstract: 1,011,453. Gas liquefaction process. CONCH INTERNATIONAL METHANE Ltd. July 10, 1964 [Jan. 23, 1964], No. 3017/64. Heading F4P. A process for the production of natural gas at a pressure below well head pressure and for the production of liquefied gas at a still lower pressure comprises isentropically expanding at a turbine 44 a first portion 8 of well head gas, passing the so cooled gas in indirect heat exchange at 17 with a second portion 9 of well head gas and feeding it into a distribution line 18, further cooling the said second portion of well head gas at 23, isentropically expanding it at a turbine 25, further cooling the cold expanded gas at 27 and isenthalpically expanding it at a valve 29 to produce flash gas and liquefied gas in a vessel 30 from which product liquefied gas is withdrawn by a pump 31 for storage in a vessel 33 whilst flash gas is withdrawn from vessel 30, used to cool exchangers 23, 27 after which it is compressed at 37 and passed to the distribution line 18. The first portion of well head gas is freed of methane hydrate in a separator 11 and the second portion is dried by passage through alternating molecular sieves 19, 19a which are regenerated by bleeding substantially pure methane from the compressor 37, heating at 40 and delivering it through a line 42 for use as fuel gas. The carbon dioxide content of the well head gas collects as a slurry in flash vessel 30 and is removed from the liquefied product by a centrifugal separator 32. In a modification, gas leaving turbine 25 is freed of nitrogen by absorption.
Patent NL-7016751-A (NL)
Title: Transparent polyamides - by condensation of terephthalic or isophthal acid and mixtures of hexamethylenediamine components
IPC: C08G69/26
Filed: 1970-11-16
Abstract: Amorphous, transparent polyamides are made by condensing terephthalic acid or isophthalic acid (or derivs. of these) with a mixture of hexamethylene diamine components contg. isomeric hexamethylene chains. Suitable diamine components are mixtures of C.C.C.-trimethylhexamethylenediamines with isomeric hexamethylene chains, mixtures of 2,2,4- and 2,4,4-trimethyl hexamethylenediamines and mixtures of 2-methyl-4-ethyl and 2-ethyl-4-methyl hexamethylenediamines. The polyamides are made in the usual way, pref. by polycondensation of a preformed salt of the acid and the diamine. Products are transparent materials with extended melting range, soluble in H2SO4, phenol and cresol and swollen by (m)ethanol, isopropanol etc. They have high impact and tensile strength and are useful for the prodn. of coatings, adhesives, drinking glasses, food containers, bottles, tubes and films for packing materials to be sterilised.
Patent NL-7217551-A (NL)
Title: Master sheet - for electrostatic copying
IPC: G03G13/22
Filed: 1972-12-22
Abstract: Electrostatic copying is effected by placing a print-off sheet against a transfer sheet having a backing layer and a transferable coating on one surface, delimiting background image parts on this surface by a partial transfer of the transferable coating whereby difference in electrical conductivity are produced on the surface between the image and background parts, thereafter sepg. the transfer sheet from the print-off sheet and using one of the sheets as a master for a dielectric recording element by the application of an electric field which produces a charge pattern in accordance with the differences in electrical conductivity brought about by the contact sheet and developing the charge pattern so produced on the recording element with a developer sensitive to this pattern. Specif. the electrical conductivity of the image parts is greater than that of the background parts.
Patent NL-7402745-A (NL)
Title: N-(2-carbamoylvinyl)aminoacids - N-protection of aminoacids by reaction with aminocarbonyl-acetone derivs
IPC: C07K1/00
Filed: 1974-02-28
Abstract: Title cpds. are of formula (I) and derivs. of (I), where R1 and R2 = (1-3)C alkyl or NR1R2 = morphholino; R3 = (1-3)C alkyl; R4 = H or (1-3)C alkyl; and NRCO2H is an aminoacid residue. (I) are prepd. by condensing the aminoacid or its salt, with an aminocarbonylacetone R3COCHR4CONR1R2.
Patent NL-7507530-A (NL)
Title: Concrete floor production progress - fills plastic moulds with concrete on site
IPC: E01C5/22
Filed: 1975-06-24
Abstract: The system is for the production of a concrete floor section, the concrete being poured into a permanent plastic mould shaping the top surface and the sides. The moulds (1) of the dimensions of the floor plates are filled directly with concrete on site. The sides of the mould can diverge towards its open side. The advantage is that floors can be constructed of concrete with a covering of wearing plastic on site, instead of having to transport heavy slabs to it. The chamfered edges enable a filler material to be placed between adjoining slabs.
Patent NL-7606812-A (NL)
Title: Stackable box type container - has bosses in wall tops fitting in recesses in tops above
IPC: B65D21/02
Filed: 1976-06-23
Abstract: The stackable box-type container is of foam plastic or similar material, with four upright walls. The base is flat on the underside, and the walls have at the centre of their top edges protruding bosses, while in the centre of their bottom edges are recesses of corresponding height. Thus when stacking the bosses on the lower box fit in the recesses in the one above. The recesses can be shaped to form hand grips. The design is particularly for boxes containing foodstuffs, and has the advantage over existing designs where the bosses protrude from the box underside, of avoiding distortion of the lowermost box in the stack.
Patent NL-7704428-A (NL)
Title: Patterned surface cladding tile - has lines starting and finishing at edges in same halves formed by diagonal
IPC: B44C1/18
Filed: 1977-04-22
Abstract: The surface cladding item, e.g. a tile, has square top and bottom faces, the former with a pattern containing two or more lines ending at the sides. When the top surface is divided by an imaginary diagonal (2) into two halves, each half contains one or more lines (5-8), each starting and finishing at the sides of the square and in the same half. Each line starting and finishing point is at the same distance (d) from the nearest corner. The design allows sets of such tiles to be assembled into a number of different regular patterns.
Patent NL-7804349-A (NL)
Title: Pistol type spray nozzle - has male and female portions on casing and control handle snapping together
IPC: B05B9/01
Filed: 1978-04-24
Abstract: The pistol-type liq. spray nozzle has a nozzle casing on which a handle hinges, regulating a control valve inside. The handle(21) and the casing (10) have male and female portions working together, the male portion (26) snapping into engagement with the female one (25) so as to form a hinge. Any hinging movement of the handle when regulating the liq. flow has the tendency to hold the portions together. The handle can hinge at the middle, being coupled at one end to the valve (18) and forming a gri (21b) for the hand at the other.
Patent NL-7806210-A (NL)
Title: Utilising waste gypsum obtd. in phosphoric acid mfr. - by mixing with low CA3 cement and hardening, e.g. to make foundation material
IPC: C02F11/00
Filed: 1978-06-07
Abstract: In a process for utilising gypsum, esp. that obtd. as a by-product in the prodn. of phosphoric acid, the gypsum is mixed with a low-CA3 cement, opt. with the addn. of water, and the mixt. is allowed to harden. The hardened pieces, opt. after being broken up, are used e.g. as a foundation material. The process utilises waste gypsum obtd. in large amts. as a by-product in the prodn. of phosphoric acid and artificial fertilisers. The by-product gypsum may contain traces of heavy metals such as Cd, Ni, Hg, Cu, Zn, As, Pb, U, etc., and may possess som radioactivity, so that serious environmental pollution can occur if it is dumped. The process transforms the potentially hazardous waste material into a safe, useful, water-resistant material.
Patent NL-7809649-A (NL)
Title: Dry transfer material based on polyolefin substrate - with adhesive layer contg. primer for polyolefin such that tacky residues are not left after transfer
IPC: B44C1/17
Filed: 1978-09-22
Abstract: A dry transfer material consists of (a) a substrate formed from a transparent polymer of ethylene and/or propylene, coated with (b) is not 1 varnish layer, is not 1 layer of printing ink which forms the required image, a second varnish layer, and a layer of an adhesive which contains a primer for the polyolefin and which extends beyond the outline of the varnish layers. The adhesive contg. a minor amt. of a primer for the polyolefin is claimed. The bond between the adhesive and the polyolefin substrate is stronger than the cohesion in the adhesive layer. As a result, tacky residues are not left after the image has been transferred.
Patent NL-8300362-A (NL)
Title: Collapsible stool with rigid two-part seat - is on two parallel pairs of legs, each pair pivoted scissor-fashion with common pivot axis
IPC: A47C4/14
Filed: 1983-01-31
Abstract: The collapsible stool (1) comprises two parallel pairs (2,3) of crossing legs (4,5; 6,7), pivoted together about a common axis. Each leg of one pair is connected with a parallel leg of the other by a transverse member (10,11). The seat consists of two halves (12,13) in rigid material (e.g. wood) with parting line (14) parallel to the axis. The front half (12) is pivotably connected with the upper rear ends of one leg (4,7) of each pair, via connecting members (20,21). The rear half (13) is pivotably connected with the upper front ends of the other leg (5,6) of each pair via members (15,16) parallel to and outside the connecting members.
Patent NL-8600707-A (NL)
Title: Wading garment for water-sport - has float, and adjustable flaps or fins and keel
IPC: B63B34/56
Filed: 1986-03-19
Abstract: The waders for walking on the water surface include a flap or fin arrangement anchored to the wader sole. A keel is slidable or rotatably fitted, enabling walking on dry land. The wader (1) has a float (2), whilst the boot part (3) has a slidable keel (4). Alternatively the boot may be fitted with hinges (5) for a rotatable heel section. The material may be plastics with inflatable sections.
Patent NL-8800607-A (NL)
Title: Laser mirrors - has substrate and diamond-like layers of material with alternating higher and lower refractive index
IPC: H01S3/08
Filed: 1988-03-11
Abstract: An optical element, esp. a laser mirror, comprising a substrate bearing a stack of layers of alternating relatively high and relatively low refractive index, each layer having a thickness of virtually 1/4 of the wavelength of the light to be handled by the optical element, and all the layer having the same chemical constitution. The layers are esp. of (A) carbon with diamond-like properties, formed by exposing a hydrocarbon or a hydrocarbon mixt. in gaseous form to a plasma discharge in the presence of a noble gas and opt. with addn. of hydrogen; or (B) oxides, nitrides or carbides or metals such as Ti, W, B or Sn, oxides or carbides of metalloids such as Si, the pure metals or metalloids of the named gps. and other substances in pure form with high wear resistance, high heat conductivity and/or high m.pt.
Patent NL-8900352-A (NL)
Title: Air moisture control for fruit ripening arrangement - incorporates moisture-heat exchanger unit for air control
IPC: F28C3/06
Filed: 1989-02-14
Abstract: Fruit e.g. bananas ripening arrangement, ensures that air temp. is increased until a predetermined moisture level is reached. Fruit ripening arrangement of large capacity includes a moisture and heat exchange appts. (100) in which a number of adjacent positioned ventilators (40) with motors (44) provide the required air circulation. The moisture/heat exchanger unit includes a section (1) of curved walls from which through pipe (2) water via nozzle (3) is sprayed. Below section (1) is a gas inlet (6) below which a trough has an outlet (5) and higher positioned overflow (4).
Patent NL-9100488-A (NL)
IPC: F16L3/20
Filed: 1991-03-19
Abstract: An elongated mounting plate (1) for attachment to a wall, provided with at least two longitudinally aligned slots (2) and an opening (5) therebetween for receiving a fastening screw, whereby the mounting plate (1) is formed to constitute a cover plate for an elongated base member (6) that is provided with a longitudinally extending cavity (10,10') or recess which corresponds with the slots (2) in the cover plate (1) and the width of which is larger than that of the slots (2), whereas the bottom of said cavity (10,10') or recess has an opening that corresponds with said opening in the cover plate. Partitions (7,13) are provided in the cavity of the base member (6), which divide the cavity into mutually separated compartments located on either side of the fastening opening. <IMAGE>
Patent NL-9101014-A (NL)
Title: Storage place for bicycles
IPC: E04H6/00
Filed: 1991-06-12
Abstract: The invention relates to a store for bicycles, in which, inside a wall 1 with a closable door opening 3, a number of bicycles, with their rear wheels towards the centre axis 59, are arranged radially in bicycle holders 9 in two concentric rows 5, 7 in a frame 23 which can rotate about a centre axis 59. The handlebars of the bicycles in one row project into the space taken up by the adjacent bicycles in the other row 7. In order for it to be possible for a bicycle which has been placed on its holder 9 to be removed radially through the door opening 3, holders 51, 53 which are present on either side of this holder 49 are temporarily moved apart at their axially outer ends, counter to the action of leaf springs 43 and 45, with the result that the holder 49 with the bicycle positioned on it can be moved freely through the door opening 3. <IMAGE>
Patent NL-9201883-A (NL)
IPC: F24D19/08
Filed: 1992-10-29
Abstract: A method and device for maintaining a fluid at a working pressure in a substantially closed fluid circulation system wherein the temperature of the fluid can vary and which is preferably deaerated continuously. The maintenance of a working pressure is realized by keeping the system filled automatically by connecting said system, by means of a closable connection, to a stock of fluid which is under atmospheric pressure, the fluid circulation system and the stock of fluid being connected directly, which connection is opened at and below atmospheric pressure at the location of the connection and, when the working pressure rises, is automatically closed at atmospheric pressure at the location of the connection. If so desired, replenishment of the stock of fluid, which is preferably disposed in the vicinity of the highest point of the system and may serve as expansion possibility for the system, may be effected automatically. <IMAGE>
Patent NL-9400504-A (NL)
Title: Method for purifying a contaminated oxidizing solution in a dialysis cell
Inventor: THOLEN JOHANNES PETRUS PAULUS
IPC: C01B15/013
Filed: 1994-03-30
Abstract: The present invention describes a method for purifying oxidizing solutions. In contrast to the idea common in the prior art that certain anion-selective membranes are unsuitable for this purpose, the present invention demonstrates that anion-selective membranes can indeed be used in a dialysis cell to purify these strongly oxidizing solutions. A specific embodiment demonstrates purification of a chromic acid solution contaminated with cations.
Patent NL-9401686-A (NL)
Title: Method and apparatus for removing (radioactive) caesium from liquids
Inventor: VERZIJL JACOBUS MARIA
IPC: B01D61/24
Filed: 1994-10-13
Abstract: The invention relates to a method and an apparatus for removing caesium, in particular radioactive caesium, in ionic form from liquids, in particular aqueous liquids such as drinking water, waste water, milk, urine, blood, plasma and the like, which are contaminated with radiocaesium, with the aid of insoluble Prussian Blue (PB), wherein the (radio) caesium-containing liquid is passed along or through an inert support which may or may not be porous and whose surface is covered with a thin layer of PB which has been immobilized thereon with the aid of a solution of cellulose nitrate in an organic solvent.
Patent PT-67950-A (PT)
Title: Process for the preparation of a fungicid composition containing morpholine derivatives
IPC: C07D295/02
Filed: 1978-04-26
Abstract: N-(3-p-tert-butylphenyl-2methyl-1-propyl)-morpholine derivs. of formula (I) and their salts, molecular cpds. and addition cpds. are new. (where R1, R2, R3, R4 and H, methyl or ethyl). (I) are fungicides useful as plant protection agents esp. active against Erysiphe graminis, erysiphe cichoriacearum, Podosphaera leucotricha, Uncinula necator, Erysiphe polygoni, Sphaerotheca pannosa, Microsphaera querci, Botyris cinerea, Mycosphaerella musicola, Ruccinia varities, Uromyces appendiculatus and U. phaseoli, Hemileia vastatrix and Rhizoctoria solani. They have systemic activity and are well absorbed by roots and leaves. They are also used to protect seeds.
Patent PT-71469-A (PT)
Inventor: UHLMANN OTTO
IPC: F16L59/00
Filed: 1980-06-27
Abstract: 1. Process for the continuous manufacture of thermally insulated tubing, for pipework installations, starting from a seamless copper tube in the hard-drawn or semihard-drawn condition, this tubing possessing a plastic-based thermally insulating sheath, characterized in that a long length of copper tube, which has been predrawn, save for the finishing pass, is pulled from a coil and is drawn to the finished dimensions, on a drawing machine, in one pass, is straightened, is encased in a plastic sheath, which is cooled, and the tubing is thereafter cut into lengths not exceeding 10 metres, and preferably into 5-metre lengths.
Patent PT-74552-A (PT)
Title: Self adhesive flat shapes formed of two adhering plastic sheets - to take a printed motif which is thrown into relief through partial fusion by heat of upper sheet
IPC: B41M/
Filed: 1982-03-08
Abstract: Two plastic sheets, adhering due to their static charges, differ in thickness and structure, the thicker being of expanded material and the thinner being dense and practically inextensible. The thinner sheet receives a coating of adhesive on its face surface which is protected by a removable sheet of silicate paper. T desired motif is printed on the thicker sheet by silk screen. The shape is cut out and the two sheets joined along the outline by high frequency heat welding. At the same time the electrode causes partial fusion and cavitation of the thicker sheet along the lines or intermediate zones to produce the design in relief.
Patent PT-76855-A (PT)
IPC: A23B7/06
Filed: 1983-06-09
Abstract: The present invention is concerned with a method for the improvement of the technical efficiency and of the quality of tinned mushrooms. This method is characterized by the fact that, in order to avoid blanching, the de-aeration of the mushrooms is achieved by treatment under a partial vacuum combined with an impregnation by means of a saline solution that makes a loss of water by osmosis possible.