baber/WOPTO huggingface dataset:
Patent IE-32033-L (IE)
Title: Heat exchange tubes
IPC: B21D15/04
Filed: 1967-12-06
Abstract: 1,174,640. Making tubes; rolling tubes. CALUMET & HECLA CORP. 5 Dec., 1967 [26 June, 1967], No. 55225/67. Headings B3A and B3M. [Also in Division F4] External helical fins 48 and internal helically extending ribs are formed integrally on a tube T by applying rolling pressure to sets of fin forming rolls 42, the tube T being simultaneously advanced over a supporting cylindrical mandrel 40. Each set of rolls 42 comprises an arbor 44 carrying a plurality of discs 46 together with a further disc 52 of larger diameter located beyond the end of the mandrel 40 and which forms the internal helical ribs. Alternatively, as shown in Fig. 5, a rolling tool 60 comprising an arbor 62 carrying spaced discs 64 is used to form the external helical fins 70 and grooves 68, and a separate tool 76 provided with a helical rib 78 engages in one of the previously formed grooves to deepen it so forming the inwardly projecting helical rib 74.
[GB1174640A]
Patent IE-811505-L (IE)
Title: Dispersion process
IPC: C25D13/06
Filed: 1981-07-03
Abstract: Preparation of aqueous dispersions of film-forming polymer particles wherein the dispersions comprise both pre-formed polymer and polymer formed in situ, and to the use of these dispersions in coating compositions which can be applied by cationic electrophoresis. Previous dispersions of the general type hereinabove described can be cationically electrodeposited but do not give films of adequate integrity and adhesion. The present invention overcomes these drawbacks by using a process wherein (a) pre-formed polymer or polymer plasticiser is dissolved in polymerisable monomer and the resulting solution stably dispersed in water in the presence of a surface active agent, and (b) the monomer is polymerised to give a particulate dispersion. Prior to polymerisation the dispersion must comply with specific pH requirements involving ensuring instability within the pH range 10-11 and the surface active agent must be cationic and have an H.L.B. value of at leat 8. 
[WO8200148A1]
Patent IE-891661-L (IE)
Title: Liposome-encapsulated vinca alkaloids and their use in¹combatting tumors
IPC: A61P35/02
Filed: 1989-05-23
Abstract: A composition made up of a liposome-encapsulated vinca alkaloid is disclosed. This composition possesses an increased antitumor activity and a substantially lower toxicity as compared to free drug.
[US4952408A]
Patent IE-42087-L (IE)
Title: Reinforcing plastic material
IPC: B63B5/24
Filed: 1975-09-17
Abstract: 1505353 Reinforced foamed plastics articles AQUATECH COMPOSITE MATERIALS Ltd 10 Sept 1975 [18 Sept 1974] 40748/74 Heading B5A [Also in Division B7] An article, particularly a body panel for a vehicle or a sailing boat component, e.g. a centre board or rudder, is made of foamed plastics material (e.g. polyurethane, a polycarbonamide, or a polyolefin) containing in the surface layers thereof an array of parallelly spaced high tensile steel elongate reinforcement elements to which the foamed plastics material adheres, the reinforcement elements being arranged substantially parallel to the surface near which they lie, this surface being smooth. The smooth surface may comprise a skin of a preformed plastics material in adhering contact with the foamed plastics material, and this skin may be of a different plastics material to the foamed plastics material. The article is made by positioning the reinforcement elements in a mould and then introducing a plastics material and a foaming agent and foaming and curing the plastics material. Additional layers of reinforcement elements may be provided.
[GB1505353A]
Patent IE-812060-L (IE)
Title: Immunofluorescent assay reagent
IPC: G01N33/58
Filed: 1981-09-07
Abstract: 1. Fluorescent diagnostic reagent, containing a compound consisting of a) a hydrophobic hapten, b) a hydrophilic compound and c) a hydrophobic fluorescent compound based on fluoresceine, umbelliferone or fluorescamine, whilst both the hydrophobic hapten and also the hydrophobic fluorescent compound are bonded to the hydrophilic compound separately from each other, characterised in that the hydrophilic compound is an aminoglycoside of general formula  see diagramm : EP0047459,P10,F1  wherein : R1 represents =C or -CH ; R2 represents -CH2 OH, -CH2 NH2 , -CH2 NHCH3 ,  see diagramm : EP0047459,P10,F2  or  see diagramm : EP0047459,P10,F3  R3 represents =C or -CH ; R4 , R5 and R9 represent -H or -OH ; R6 represents -OH or -NH2 ; R7 represents -NH2 , -NHCH2 CH3 or -NH-COCH(OH)CH2 CH2 NH2 ; R8 represents -H or -CH2 OH ; R10 represents -OH or -CH3 and R11 represents -NH2 or -NHCH3 .
Patent IE-882393-L (IE)
Title: Scoring aid for a game of golf
IPC: A63B71/06
Filed: 1988-08-05
Abstract: A scoring aid 1 for use in a game of golf comprises a number of scoring tumblers 2 mounted in a housing 3 in two banks each having an elongate viewing window 4 through which a score displayed by the tumblers 2 may be viewed. The tumblers 2 are moved manually to indicate a score at a particular hole whilst overcoming restraining means eg pins 11, (fig 5) holes 12 and spring 16 which prevent accidental tumbler movement. In other embodiments nine disk tumblers and their associated windows are provided in each half of a palm sized disk. The restraining means may be pawls 95, 96 (fig 17) on the tumbler that engages grooves 93 in a spigot, or resilient arms 106 (fig 21) or rings 70, 71 (fig 9) 81 (fig 13) that press against the tumblers. <IMAGE>
[GB2221398A]
Patent IE-812403-L (IE)
Title: Scrap melting furnace
IPC: F27B3/04
Filed: 1981-10-13
Abstract: Metallic scrap contaminated with combustibles is melted in a reverberatory melting furnace having two communicating wells; one being an enclosed sidewell, which is the receiving well for scrap material during melting, and the other being an enclosed main holding well for molten metal. The main well has burner means to provide heat for melting the metal and treating the scrap material. Heat from molten metal flowing between the main well and the sidewell produces exhaust gases by vaporizing the combustibles of the scrap material. An external passage circulates the exhaust gases from the sidewell to the main well for incineration by the main well's burner means. The external passage has an eductor means which draws the exhaust gases from the sidewell and propels them towards the main well.
[US4319921A]
Patent IE-42180-L (IE)
Title: Preparation of a-6-deoxytetracyclines
IPC: F41A9/27
Filed: 1975-11-18
Abstract: The improved process applies to the preparation of a 6-deoxytetracycline by hydrogenation of a 6-deoxy-6-demethyl-6-methylenetetracycline. The process makes possible a stereoselective hydrogenation in favour of the alpha isomer, and it is characterised in that the hydrogenation is carried out at a temperature of 20 to 100 DEG C and at a pressure of 20 to 100 atmospheres, under practically neutral or slightly acidic conditions, in the presence of a catalyst of formula Rh(OCOR)2(P[C6H5]3) in which R = hydrogen, C1 to C6 alkyl, chloromethyl, dichloromethyl, trichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl, phenyl, chlorophenyl, tolyl or anisyl.
[CH609042A5]
Patent IE-45878-L (IE)
Title: Circuit board connection assembly
IPC: H05K7/14
Filed: 1977-12-22
Abstract: A circuit board is received in a cut-out in a surrounding frame. The circuit board has a peripheral ground conductor which is connected to the surrounding frame by the conductive teeth of an assembly of combs. The non-toothed spines of the combs are arranged along the margins of the surrounding frame and the teeth are inclined. They are preferably inclined in the plane of their spines. Such an assembly could be used for the amplifier of a telephone repeater assembly.
[US4164002A]
Patent IE-872694-L (IE)
Title: Factor ix-peptides
IPC: C07K7/06
Filed: 1987-10-08
Abstract: The invention relates to polypeptides which contain the EGF domain of factor IX or a subsequence thereof and are suitable for the specific inhibition of the binding of coagulation factor IX or its activated form IXa to endothelial cell surfaces. The invention also relates to pharmaceutical products which contain such polypeptides. The polypeptides and the pharmaceutical products make it possible to treat thrombotic disorders without impairing the protective extravascular coagulation and comprise the following amino-acid sequences: Asp-Gly-Asp-Gln-Cys, Lys-Gln-Tyr-Val-Asp-Gly-Asp-Gln-Cys, Phe-Trp-Lys-Gln-Tyr-Val-Asp-Gly-Asp-Gln-NH2, Lys-Gln-Tyr-Val-Asp-Gly-Asp-Gln-Cys-Glu-Ser-Asn-NH2 and Lys-Gln-Tyr-Val-Asp-Gly-Asp-Gln-NH2.
[EP0263529A1]
Patent IE-882944-L (IE)
Title: Therapeutic agents
IPC: A61P29/00
Filed: 1988-09-29
Abstract: Platelet activating factor antagonists of formula (I): <CHEM> wherein R is phenyl or phenyl substituted by one or more substituents selected from nitro, halo, C1-C4 alkyl, C1-C4 alkoxy, aryl(C1-C4)alkoxy, fluoro(C1-C4)alkoxy, C1-C4 alkylthio, C1-C4 alkylsulphonyl, hydroxy, trifluoromethyl and cyano, or is phenyl fused to a dioxole ring; R<1> and R<2> are each independently H or C1-C6 alkyl, or R<1> and R<2> together complete a pyrrolidinyl, piperidino, morpholino, piperazinyl, N-(C1-C4 alkyl)piperazinyl or N-(C2-C4 alkanoyl-piperazinyl group; or R<2> is H or C1-C4 alkyl and R<1> is CN, C3-C7 cycloalkyl, aryl, heteroaryl or a C1-C4 alkyl group substituted by one or more substituents selected from C3-C7 cycloalkyl, C1-C4 alkoxycarbonyl, aryl or heteroaryl; Z is selected from C1-C6 alkoxy, aryl(C1-C4)alkoxy, hydroxy, and -NR<4>R<5> wherein each of R<4> and R<5> is independently H or C1-C6 alkyl, or R<4> and R<5> together complete a pyrrolidinyl, piperidino, morpholino, piperazinyl or N-(C1-C4 alkyl)piperazinyl group; Y is 1,4 phenylene or pyridine-2,5-diyl, and X is a 5 or 6 membered aromatic heterocyclic group containing one or more nitrogen atoms in its ring; which ring may be fused to a benzene ring or to a further 5- or 6-membered aromatic heterocyclic ring containing one or more nitrogen atoms, at least one of said heterocyclic rings optionally also containing an oxygen or sulphur atom, and being optionally substituted with one or more substituents selected from C1-C4 alkyl, C1-C4 alkoxy, halo, CF3 and CN; and their pharmaceutically acceptable salts.
[EP0310386A2]
Patent NO-781011-L (NO)
Title: Utleveringsinnretning for enkeltbeholdere
Inventor: SCHJELDAHL GILMORE TILMEM
IPC: B65B/
Filed: 1978-03-21
Abstract: Beholderutleveringsapparat.
Patent NO-801801-L (NO)
Title: Chip pakke med hoey kapasitet.
Inventor: THOMPSON DAVID ALLEN
IPC: H05K7/06
Filed: 1980-06-17
Abstract: Kretsmodul for VLSI-kretser med svært høy tett-het og svært liten størrelse er konstruert på et substrat(22) gjennom hvilket antall åpninger(23) har blitt freset. I hver åpning (23) er en stabel med flere kapasitivt koplet, isolerte strømtilførselsplater (11) for å tilføre strøm til de integrerte kretser (18) fra samleskinne-ledningene (30) og en skjermet bandleder (24) er satt inn. Strømtilførselsplatene (11) er anordnet fortrinnsvis perpendikulært på substratet. (22). De øvre kantene til strmtilfrselsplaten (11) anordnet glatt med topp overflate (18) til substratet (22) slik at selve kantene danner landområder på hvilket en integrert krets forbindelse kan bli festet. Et innbyrdes forbindelsesjikt (12) kan alternativt bli plassert mellom toppkantene til strømtilførselsplatene såvel som til over-
Patent NO-813671-L (NO)
Title: Kutteinnretning.
Inventor: HORNE ALFRED
IPC: A01G/
Filed: 1981-10-30
Abstract: Innretning for fjerning av busker og kratt f.eks. langs veier, bestående av en kutteanordning festet til enden av en bevegbar bom anbrakt på et kjøretøy. Kutteanordningen utgjøres av roterbare sagblad montert i en enhet som er glidbart anbrakt slik at sagbladene foruten å rotere også beveges sideveis frem og tilbake. under kutting.
Patent NO-820340-L (NO)
Inventor: KARJALAINEN ARTO JOHANNES
IPC: C07D233/58
Filed: 1982-02-04
Abstract: Compounds of the formula:   <IMAGE> (I)   <IMAGE>  wherein each of R1, R2 and R3, which can be the same or different, is hydrogen, chloro, bromo, fluoro, methyl, ethyl, methoxy, amino, hydroxy or nitro; R4 is hydrogen or alkyl of 1 to 7 carbon atoms; R5 is hydrogen or a straight or branched alkyl group of 1 to 5 carbon atoms or a phenyl group; and R6 is hydrogen or an alkyl group of 1 to 7 carbon atoms or a substituted or unsubstituted benzyl, X is -CH2-, -CHOH- or -CH=CH- and n is 0-4; provided that R5 and R6 are simultaneously hydrogen only when n is 4 and X is -CH=CH-; and their non-toxic pharmaceutically acceptable acid addition salts and mixtures thereof exhibit valuable pharmacological activity and are useful in the treatment of mammals, especially as antithrombotic agents. Furthermore, some of the compounds have proved to possess antihypertensive or  beta -blocking activity. Antimicrobial and antifungal properties have also been found. Processes for the preparation of these compounds are described, as are novel pharmaceutical compositions comprising at least one of the compounds or their salts.
Patent NO-870256-L (NO)
Inventor: MCDANIEL MAY PAUL
IPC: C07C2/30
Filed: 1987-01-21
Abstract: A process for dimerizing ethylene comprising contacting ethylene with an insoluble solid catalyst and a cocatalyst, said catalyst having at least on the surface thereof hydrocarbyl ortho ester groups bonded to vanadium or titanium.
Patent NO-870776-L (NO)
Inventor: GRAU ULRICH
IPC: A61J1/06
Filed: 1987-02-25
Abstract: A medicament container, such as an injection ampule, for multiple administration of medicament suspensions the containers is filled with medicament so as to be free of gas bubbles, and includes at least one inert mixing element of suitable size whose density is different from that of the suspension. The mixing element acts to homogenize the medicament suspension as the container is shaken.
Patent NO-901306-L (NO)
Inventor: DAELE GEORGES HENRI PAUL VAN
IPC: A61K31/443
Filed: 1990-03-21
Abstract: N-(3-hydroxy-4-piperidinyl)(dihydrobenzofuran, dihydro-2H-benzopyran or dihydrobenzodioxin)carboxamide derivatives of formula <CHEM> wherein A is -CH2-CH2-, -CH2-CH2-CH2-, -CH2-CH2-CH2-CH2-, -CH2-O-, -CH2-CH2-O- or -CH2-CH2-CH2-O-,  R<1> is hydrogen, halo, C1-6alkylsulfonyl or aminosulfonyl; R<2> is hydrogen, amino, mono or di(C1-6alkyl)amino, arylC1-6alkylamino or C1-6alkylcarbonylamino;  R<3> and R<4> are hydrogen or C1-6alkyl; L is C3-6cycloalkyl, C5-6cycloalkanone, C3-6alkenyl optionally substituted with aryl, or L is -Alk-R<5>, -Alk-X-R<6>, -Alk-Y-C(=O)-R<8> or -Alk-Y-C(=O)-NR<1><0>R<1><1>; the N-oxides, the pharmaceutically acceptable acid addition salts and possible stereochemically isomeric forms thereof. Said compounds have gastrointestinal stimulating activity. Pharmaceutical compositions containing such compounds as an active ingredient; methods of preparing said compounds and pharmaceutical compositions.
Patent NO-901674-L (NO)
Inventor: BOLLINGER JOSEPH MARTIN
IPC: C10N30/04
Filed: 1990-04-17
Abstract: Hybrid copolymers of a nitrogenous grafted copolymer with a nitrogenous random polymer, and methods for their preparation, are provided. The hybrid copolymers can be prepared by first forming the nitrogenous graft copolymer and then copolymerizing additional constituent vinyl monomer(s) with residual nitrogenous monomer(s) to form the hybrid copolymer.
Patent NO-903128-L (NO)
Inventor: BLANC CLAUDE
IPC: C10G5/04
Filed: 1990-07-13
Abstract: The gas mixture to be treated (1) is washed (5) between 0 DEG C and -45 DEG C by means of a solvent (6) for CO2 and C3 and higher hydrocarbons to produce a methane stream (8) containing not more than 2 mol% of CO2 and a CO2-rich liquid phase (11) containing at least 80 mol% of C3 and higher hydrocarbons from the gas mixture (1). The liquid phase (11) is subjected to a demethanization (12, 17) producing a demethanized rich solvent (27) and a methane-rich gas phase (22), and then the rich solvent (27) is subjected to a regeneration producing a regenerated solvent (34) which is recycled into the washing zone (5), and a gas mixture (42) containing the CO2 and the C2 and higher hydrocarbons which are present in the methanized rich solvent, the said gas mixture being separated by regenerative washing with a C5 and higher hydrocarbon solvent, into a CO2-rich acidic gas stream containing, expressed as methane equivalent, less than 10 mol% of hydrocarbons, and into a C2 and higher hydrocarbon cut (48) containing at least 80 mol% of the C3 and higher hydrocarbons present in the gas to be treated (1).
Patent NO-910079-L (NO)
Title: Bindemiddel og beleggningsblanding samt anvendelse derav.
Inventor: SUGITANI NOBUHIRO
IPC: C09D1/00
Filed: 1991-01-08
Abstract: Varmebestandig sammensetning som utviser fremragende varme- og slitasjebestandighet etter å ha blitt herdet. Ytterligere har den fremragende frigjoringsevne og holdbarhet og den herdede film derav, har storre stabilitet enn tidligere klebemidler av denne type, ved å fremstille den fra to komponenter: en pulverblanding bestående av 20 vekt% eller mer av zirkoniumoksyd, 1-10 vekt% natriumtitanat, 2-15 vekt% yttriumoksyd basert på zirkoniumoksyd og resten silisiumoksyd; og et natriumsilikat inneholdende en liten mengde vann tilsatt dertil.
Patent NO-914194-L (NO)
Inventor: KNOP BERNHARD
IPC: C08K3/00
Filed: 1991-10-25
Abstract: The addition of ethylene oxide/propylene oxide block copolymers containing 5 to 35 wt. % of ethylene oxy groups and molar masses of the polypropylene glycol block between 1500 and 3000 to dry, hydraulic binder materials results in reduced dust formation, improved wettability and enhanced flow properties of these materials when they are mixed with water.
Patent NO-921118-L (NO)
Inventor: BREITLING ULRICH
IPC: B62D47/02
Filed: 1992-03-20
Abstract: The invention shows a rotatable connection with an integrated jack-knifing protection (5) between the front car (1) and the trailer (2) of an articulated vehicle, in particular an articulated bus. The housing (6) which encloses the jack-knifing protection (5) and is constructed robustly from cast steel or ductile cast iron is connected to the rear of the front car (1) as a primary load-bearing structure. The rotational connection (8), ball-bearing slewing ring, is arranged directly in the housing (6) between front car (1) and trailer (2). <IMAGE>
Patent NO-921840-L (NO)
Title: Substituerte karboksylsyrederivater
Inventor: GUTHRIE ROBERT WILLIAM
IPC: C07D263/12
Filed: 1992-05-08
Abstract: Forbindelser med formelen Y o AvJ_/ R°y\ R1 ^./S'2 A----(CH2)n-B-Q hvori A, B, Q, RI, R2/ R2', X, Y, Z og n er som beskrevet i krav l, og når dette måtte passe i form av enantiomerer, racemater, diastereomeriske forbindelser eller blandinger av slike, eller geometriske isomerer eller blandinger av slike, og når en basisk eller sur gruppe er tilstede, farmasøytisk akseptable salter av slike forbindelser, hemmer enzymkarnitin- acyltransferase l (CAT-1) og kan derfor brukes for å hindre skade i det ischemiske vev, og kan begrense størrelsen av inf?rkt, bedre hjertefunksjonen og hindre arrhytmi under eller etter et myokardialt infarkt. Forbindelsene kan fremstilles ifølge forskjellige fremgangsmåter som i seg selv er kjente.
Patent NO-923258-L (NO)
Inventor: KAULE WITTICH
IPC: B42D15/00
Filed: 1992-08-19
Abstract: The invention relates to a security document, in particular a bank note, identity card or the like, having a security element which is provided with characters, patterns, etc., visually readable at least in transmitted light and which is electrically conductive and bears additional substances for machine testing, and to a method for producing such a security element. The security element preferably consists of a transparent film strip that bears negative writing readily capable of visual checking and is additionally provided with electrically conductive and magnetic substances.
Patent NO-931329-L (NO)
Title: Overstroemsbeskyttelsesanordning
Inventor: PRYOR DENNIS
IPC: H02H3/087
Filed: 1993-04-07
Abstract: En overstrømsbeskyttelsesanord- ning omfattende en koplingskrets som er beregnet for å seriekoples i en ledning i den krets som skal beskyttes, og som vil tillate normale kretsstrømmer å passere, men vil åpne når den utsettes for en overstrøm. Anordningen inneholder en pulsgenerator som vil frembringe pulser når koplingskretsen har åpnet, hvilke pulser nullstiller, eller forsø- ker å nullstille, koplingskretsen til sin ledende tilstand. Bare et forutbe- stemt, begrenset antall pulser, eller pulser i en forutbestemt, begrenset tid genereres, slik at kretsen raskt vil fungere igjen etter å ha vært utsatt for en strømtransient, men vil ikke stadig forsøke å nullstille i tilfelle av ut- styrsfeil.
Patent NO-934425-L (NO)
Title: Preparater for nanopartikkelformige röntgenkontrastmidler
Inventor: NA GEORGE C
IPC: A61K49/04
Filed: 1993-12-06
Abstract: Preparat omfattende nanopartikler inneholdene en røntgendlagnostisk forbindelse, med et overflateaktivt middel av høy molekylvekt som et overflatemodlflserende middel adsorbert på deres overflate og et slørlngs- punkt-modlflserende middel forbundet dermed. Det er også beskrevet fremgangsmåter for fremstilling av nanopartlkler. Et foretrukket overflateaktivt middel er poloksamln og foretrukne slørlngspunkt-modlfIserende midler Innbefatter dlmyrlstoylfosfatidylglyserol og dloktylsulfosukslnat. En metode for diagnostisk avblldlng for bruk l medisinske prosedyrer omfattende administrasjon til legemet til et testlndlvld som har behov for røntgenavblldnlng, av en effektiv kontrast- produserende mengde av ovennevnte preparat, er også beskrevet.
Patent NO-940966-L (NO)
Inventor: MULLER ULRICH E
IPC: A61P43/00
Filed: 1994-03-17
Abstract: Heterotricyclic-substituted phenylcyclohexanecarboxylic acid derivatives are prepared by reacting the heterocyclic compounds with cyclohexanecarboxylic acid derivatives which are substituted by benzylhalogen radicals. The compounds can be employed as active ingredients in medicaments.
Patent NO-961460-L (NO)
Inventor: KLEIN SCOTT I
IPC: C07K5/072
Filed: 1996-04-12
Abstract: PCT No. PCT/US94/12135 Sec. 371 Date May 2, 1996 Sec. 102(e) Date May 2, 1996 PCT Filed Oct. 17, 1994 PCT Pub. No. WO95/10295 PCT Pub. Date Apr. 20, 1995The present invention relates to azacycloalkylalkanoyl peptides and pseudopeptides which inhibit platelet aggregation and thrombus formation thereby being useful in the prevention and treatment of thrombosis associated with disease states such as myocardial infarction, stroke, peripheral arterial disease, and disseminated intravascular coagulation, to methods for the prevention or treatment of thrombosis in a mammal in need of such therapy comprising the administration of a therapeutically effective amount of such compounds, and to pharmaceutical compositions comprising such compounds.
Patent NO-963431-L (NO)
Inventor: YEN SHAU-FONG
IPC: A61K9/00
Filed: 1996-08-16
Abstract: Disclosed is a sustained release liquid aqueous ophthalmic delivery system and a method of providing a slow and sustained release of ophthalmic treating agents to the eye of a mammal which comprises administering to the eye of a said mammal an effective amount of a homogeneous liquid aqueous ophthalmic pharmaceutical composition, of pH between about 3.0 and about 6.2, which is adminstrable in drop form and which comprises an ophthalmically effective concentration of a said ophthalmic treating agent and about 0.05% to about 10% by weight of the polymer chitosan; said polymer consisting essentially of (A) monomeric  beta (1->4)-D-glucosamine linked units and of (B) monomeric  beta (1->4)-D-glucosamine linked units which are scattered randomly in the molecule of the polymer, the numerical proportions of A and B being from about 60 to about 99% of A and about 1 to about 40% of B, the viscosity rating being from about 3 to about 3000 cps; in which method, upon contact with the higher pH of the ocular fluid, said liquid formulation is converted to a stiff gel from which the ophthalmic treating agent is slowly released over a prolonged period of time.