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| Number | Title | Issue Date |
| 5391669 | Balanced charge polymer and hydrophilic contact lens manufactured therefrom A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a non-ionic ethylenically unsaturated hydrophilic a... | 02/21/1995 |
| 5384370 | Rubbers swellable with water and aqueous solutions and the method for producing the same The present invention concerns rubber-based composite materials swellable with water and associated methods of production. A swellable rubber material according to the present invention comprises a vulcanized non-silicone rubber selected from the group co... | 01/24/1995 |
| 5270415 | Balanced charge polymer and hydrophilic contact lens manufactured therefrom A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a nonionic ethylenically unsaturated hydrophilic an... | 12/14/1993 |
| 5202418 | Method of performing multiple synthesis of peptides on solid carrier The invention relates to a method and apparatus for performing a multiple synthesis of peptides on a solid carrier. Active components are successively bonded to functional groups anchored on a carrier. The carrier planar functionalized porous material div... | 04/13/1993 |
| 5199041 | Modulation of oxygen-iodine laser A method of modulating an oxygen-iodine laser comprises applying an external magnetic field having an intensity of up to 800 A.cm-1 to the active zone of the laser and, at the same time, changing the magnetic field intensity to change the outpu... | 03/30/1993 |
| 5158832 | Lenses from polymeric derivatives of acrylic and methacrylic acids A lens made from a non-hydrophilic acrylate or methacrylate polymer or copolymer for application in an aqueous medium inside a human eye or on its surface, i.e., an intraocular or contact lens, is provided wherein the originally non-hydrophilic surface la... | 10/27/1992 |
| 5130479 | Hydrolytically degradable hydrophilic gels and the method for preparation thereof using N,O-dimethacryloylhydroxylamine as a cross-linking agent The solution pertains to hydrolytically degradable hydrophilic gels consisting of the individual chains of hydrophilic polymer interconnected with crosslinks containing the structure unit ##STR1## The method for preparation of the hydrolytically degr... | 07/14/1992 |
| 5130427 | (2R)-2-[di(2-propyl)phosphonylmethoxy]-3-p-to luenesulfonyloxy-1-trimethylacetoxypropane, its preparation and use The invention relates to the new compound (2R)-2-[di(2-propyl)phosphonylmethoxy]-3-p-toluenesulfonyloxy-1-trimethyla cetoxypropane and the method of producing it. The compound may be used for producing (S)-N-(3-hydroxy-2-phosphonylmethoxypropyl) derivative... | 07/14/1992 |
| 5125976 | Method of milling the Portland clinker for the production of gypsumless Portland cements A method for milling Portland clinker for the production of gypsumless Portland cements is provided. The method comprises milling the Portland clinker in the presence of 0.01 to 0.05 weight % of a synthetic, organic, surface-active substance with wetting ... | 06/30/1992 |
| 5096930 | Preparation of the improvement of the regenerative process of injured striated muscles This invention relates to a treatment for the improvement of regeneration of injured striated muscles, the key-feature of which is the application of n-butylamine, in natural or ionic form or in buffered solution, as effective substance.... | 03/17/1992 |
| 5011611 | Method of separation of furfural from diluted aqueous solutions Furfural is separated from a dilute aqueous solution by contacting the solution with a polymer adsorbent which comprises porous crosslinked copolymers of styrene and derivatives thereof, having an internal surface area greater than 30 m2 /g and... | 04/30/1991 |
| 5002570 | Intraocular hydrogel lens with shape memory An intraocular hydrogel lens with shape memory swelling in water or in isotonic solution, as is physiologic saline, which is deformed before implantation into a shape suitable for operative insertion, for example, into the shape of a rod, is made, at leas... | 03/26/1991 |
| 4997441 | Contact or intraocular lens from lightly crosslinked polymer or copolymer of 2-hydroxyethyl methacrylate and a method for producing thereof Contact lens or intraocular lens from lightly crosslinked polymer of 2-hydroxyethyl methacrylate or from such its copolymer, where the 2-hydroxyethyl methacrylate component prevails over the second nonhydrophilic component, which contains a hydrophilic sw... | 03/05/1991 |
| 4994083 | Soft intracameral lens The invention pertains to a soft intracameral lens determined for the location in the posterior chamber of eye. The soft intracameral hydrogel lens has its front supporting and centering convex part determined for leaning against iris having in front a rotatio... | 02/19/1991 |
| 4988277 | Method for casting polymeric gels from volatile mixtures of monomer in open molds The invention pertains to apparatus for casting polymeric gels from volatile mixtures of monomers in open molds. The principle of the invention resides in the fact that the same concentrations of volatile components present in the polymerization mixture a... | 01/29/1991 |
| 4981571 | Membrane for barium ion selective electrode Membrane for barium ion selective electrode The solution pertains to a membrane for barium ion selective electrode formed by the film of suitable polymeric material, for example, high-molecular weight poly(vinyl chloride), with an ion exchanger based on a... | 01/01/1991 |
| 4971732 | Method of molding an intraocular lens An improved intraocular lens, methods of fabricating the same, and methods of implantation of the intraocular lens in a human eye. The intraocular lens implant is a hydrogel and has an index of refraction approximating the refractive index of the natural ... | 11/20/1990 |
| 4968421 | Column for liquid chromatography Column for liquid chromatography contains a glass tube for sorbent packing closed with simple column seals and inserted into a jacket made of metal or plastic material. The jacket transfers axial forces exerted on the column seals by liquid pressure actio... | 11/06/1990 |
| 4962036 | Microorganism determination with a sorbent packed column Determination of microorganisms in body fluids for diagnosis is carried out by passing a body fluid through a column packed with a sorbent which traps microorganisms contained by the body fluid. A culture medium is added to the column, and after culturing... | 10/09/1990 |
| 4955903 | Soft intracameral lens The invention pertains to a soft intracameral lens intended for location in the posterior chamber of the eye. The soft intracameral hydrogel lens has a front supporting and centering convex part intended for leaning against the iris having a rotational sy... | 09/11/1990 |
| 4956432 | Hydrophilic transparent crosslinked copolymer and the method for producing thereof The solution concerns hydrophilic transparent crosslinked copolymers and a method for their production. A substance of the solution is the hydrophilic copolymer which can be prepared by the radical copolymerization of monomers with the general formula I, ... | 09/11/1990 |
| 4952349 | Macroporous polymeric membranes for the separation of polymers and a method of their application A method for preparation of macroporous polymeric membranes consisting in placing a mixture of monomers and a radical initiator, dissolved in a porogenic inert organic solvent selected from the group comprising alcohols, estes of carboxylic acids, ketones... | 08/28/1990 |
| 4950366 | Method of production of D-arabinose A method has been developed of the production of D-arabinose as a base material in the production of vitamin B2. the substance of the method rests in that the solution of a salt of D-gluconic acid is subject to direct electrochemical degradation oxidation... | 08/21/1990 |
| 4950733 | Capryloyloxyalkyl acrylates, their polymers and copolymers and the method for preparation thereof The invention pertains to capryloyloxyalkyl acrylates of the general formula CH2 .dbd.CH--CO--O--R--O--CO--(CH2)6 --CH3, where R is an alkylene group with 2 to 6 carbon atoms, their polymers and copolymers containing... | 08/21/1990 |
| 4946470 | Hard intraocular lens with the shape memory A hard introcular lens having shape memory consisting of a copolymer having a glass transition temperature (Tg) from 40° C. to 60° C. that is deformable into the shape of a straight or bent rod with a diameter of 1 to 4 mm at a temperature ab... | 08/07/1990 |
| 4921497 | Method for the formation of thin hydrophilic layers on the surface of objects made from non-hydrophilic methacrylate and acrylate polymers Method for the formation of hydrophilic layers on the surface of objects made from polymeric esters and/or nitriles of acrylic acid and/or methacrylic acid by means of hydrolysis caused by stron acids at elevated temperature, where the solubility of polym... | 05/01/1990 |
| 4916197 | Hydrophilic copolymer and the method for producing thereof The solution pertains to a hydrophilic copolymer suitable in particular for contact and intraocular lenses and medical applications and to a method for its production. The solution consists in a hydrophilic copolymer which can be prepared by copolymerizat... | 04/10/1990 |
| 4893918 | Contact or intraocular lens from lightly crosslinked polymer or copolymer of 2-hydroxyethyl methacrylate and a method for producing thereof Contact lens or intraocular lens from lightly crosslinked polymer of 2-hydroxyethyl methacrylate or from such its copolymer, where the 2-hydroxyethyl methacrylate component prevails over the second nonhydrophilic component, which contains a hydrophilic sw... | 01/16/1990 |
| 4890911 | Contact lens and the method of manufacturing thereof The invention pertains to a new design of contact lenses and to the method of their manufacturing. The contact lens comprising a carrier portion and a hydrophilic supporting portion mediating the contact of the lens with the eye surface, wherein both thes... | 01/02/1990 |
| 4835269 | Silane reagents containing a complexon group This invention relates to mixed silane reagents containing a complexon group in the reagent molecule, a method of making said reagents, and porous or nonporous inorganic materials having surface-bound complexon groups which are advantageously modified wit... | 05/30/1989 |
| 4732714 | Method and apparatus for centrifugal casting of contact lenses in open molds According to the method of the invention, molds charged with a monomer mixture are arranged into columns with precisely coaxial casting surfaces inside these columns, namely, in tubes of cylindric shape with openings only 0.01 to 0.03 mm larger the diamet... | 03/22/1988 |
| 4720083 | Valve closure gate assembly for foundry ladles The present invention relates to the foundry industry and solves the problem of extended service life of valve closure gate assemblies for foundry ladles. The valve closure gate assembly of the present invention comprises two mutually slidable heat-resist... | 01/19/1988 |
| 4710300 | Method for processing of organic materials containing nitrogen compounds The invention pertains to a method for processing of organic materials containing nitrogen compounds, where the organic material undergoes an anaerobic digestion with simultaneous liberation of biogas which contains methane and carbon dioxide. The liquid ... | 12/01/1987 |
| 4684614 | Mixing or pumping apparatus for the treatment of flowable thin or highly viscous media Arrangement for the treatment of fluent, thin and highly viscous media, particularly for the fermentation of micro organisms, for mixing, pumping and the dissipation of the medium. The arrangement is based on a novel principle of bladeless mixing and pump... | 08/04/1987 |
| 4661210 | Method and apparatus for electrochemical analysis of solutions The invention pertains to a method and apparatus for the electrochemical analysis of solutions which comprises the measurement of an electric signal between a mercury column in a capillary and a reference electrode which are in contact with the analyzed s... | 04/28/1987 |
| 4646969 | Double acting mechanical pump liquid atomizer Double-acting mechanical liquid spraying device having a housing which is adapted to be mounted upon and sealed to the neck of a liquid container, and which has a liquid-containing compartment therein. In the housing, aligned with the liquid-containing co... | 03/03/1987 |
| 4622750 | Universal measuring gauge for geological structures A universal measuring gauge for geological structures is disclosed, having an application part including an arm and a gib, which is normally attached to it on one side, the arm being, on the other side, shaped into a universal bearing journal (pin), which... | 11/18/1986 |
| 4615880 | Dressing for wounds and the method for manufacturing thereof An absorbing dressing for wounds consists of spherical particles of regenerated cellulose of the size 0.05-0.5 mm and a macroporous structure characterized by the cyclohexane regain of the dry material at least 0.2 ml/g. The dressing is prepared from the ... | 10/07/1986 |
| 4605658 | Antivirally active adenine derivatives Certain esters of 3-(adenin-9-yl)-2-hydroxypropanoic acid are disclosed which exhibit an improved broad spectrum antiviral activity while having a low toxicity for living cells. They can be used for treatment of virus diseases in human and veterinary prac... | 08/12/1986 |
| 4583830 | Method and apparatus for measuring the shape of the eye Two plane-parallel prisms are placed in the optical axis of the examined eye, fitting close to each other in a horizontal plane lying in the optical axis. The prisms are rotated relative to one another in opposite directions at the same angle with respect... | 04/22/1986 |
