In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7354984 | Method for drying nonionic alkylene oxide-type water-soluble resin, method for packaging it, and method for transporting it To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the c... | 04/08/2008 |
| 7163471 | Golf balls having sound-altered layers and methods for making them Golf ball covers incorporate base material compositions including a sound-altering material for selectively enhancing or dampening the acoustic output of a golf ball when it is struck. A ratio in the composition by weight of base material to sound-altering material ... | 01/16/2007 |
| 7087710 | Polymeric surfactants derived from cyclic monomers having pendant fluorinated carbon groups A fluorine containing polymer which acts as a wetting, flow or leveling agent, and has at least one polar group. The polymer has at least one pendant or ether side chain containing from about 1 to about 20 carbon atoms with at least 25% of the hydrogen atoms being r... | 08/08/2006 |
| 6500513 | Adhesive composition and optical disk using the composition The invention provides a two-part adhesive composition making it possible to mutually bond disk substrates within a relatively short time and to produce an optical disk, and an optical disk having a metal film, corrosion of which is restricted under a hig... | 12/31/2002 |
| 6300457 | Polyester/polyurethane vinyl dioxolane based coating compositions The present invention provides polyester/polyurethane/vinyl dioxolane based coating compositions containing no or essentially no volatile organic components. Oligomers for forming the coating compositions of the present invention are vinyl dioxolane end-c... | 10/09/2001 |
| 5880175 | Amine cured foundry binder system and their uses The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin,(b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizi... | 03/09/1999 |
| 5760152 | Crosslinked isocyanate functional polymer supports Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reac... | 06/02/1998 |
| 5710210 | Process for polymer reactions with functionalized peroxides Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare... | 01/20/1998 |
| 5710233 | Polyurethane elastomers with reduced gas permeability Polyurethane elastomers with reduced gas permeability are prepared by reaction of: a) diisocyanates, b) compounds with a molecular weight of 500 to 10,000 having at least two hydrogen atoms that are reactive towards isocyanates, c) compounds with a molecular w... | 01/20/1998 |
| 5693685 | Thermal insulator and method for producing the same A thermal insulator of the present invention includes a foam containing solidified CO2 gas. A method for producing the thermal insulator includes the steps of: mixing a metal compound selected from the group consisting of a metal oxide and a me... | 12/02/1997 |
| 5556935 | Crosslinking agents for textile printing binders The present invention relates to textile printing pastes containing modified polyisocyanates, modified polycarbodiimides, or trifunctional polyepoxides as crosslinking agents for the binders present therein.... | 09/17/1996 |
| 5482648 | Catalyst system for adherent rigid foam An isocyanate composition is made by using a 2-component catalyst system--one which initiates at room temperature and one which initiates at a temperature of at least 75° C. and has a one-hour half-life temperature of at least 90° C.; the composition ha... | 01/09/1996 |
| 5422186 | Compositions containing mixtures of aqueous polymer dispersions and textile and leather substrates coated therewith The present invention relates to coating compositions which are suitable for preparing matt coatings and contain A) an aqueous polymer dispersion which is capable of forming films at temperatures below 70° C. and B) an aqueous polyurethane polyurea dispersion... | 06/06/1995 |
| 5395909 | Composition for high refractive index lens comprising a copolymer of a vinylbenzylthio compound The present invention provides a composition comprising, as the essential components, an aromatic compound represented by the following general formula ##STR1## (m is an integer of 2-3, n is an integer of 1-3 and R is a hydrocarbon group of 3-6 ... | 03/07/1995 |
| 5324759 | RIM polyol blends containing acidic siloxane internal mold release agents and quaternary ammonium phenoxides In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea or polyurea elastomer by reaction injection molding, the improvement which comprises a mold relea... | 06/28/1994 |
| 5317075 | Hydroxyl containing quaternary ammonium salts of fatty acids as internal mold release compositions In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane or polyurethane/urea elastomer by reaction injected molding, the improvement which comprises a mold release composi... | 05/31/1994 |
| 5278274 | Chemical process A continuous process for the preparation of an isocyanate-terminated prepolymer having an NCO content in the range from 2 to 15% by weight, said process comprising the steps of: (A) continuously delivering to a reaction zone an organic polyisocyanate comp... | 01/11/1994 |
| 5248760 | Chemically cured low temperature polyimides The invention comprises curing polyamic acid solutions into polyimide solutions by adding a hydrophilic reagent to a polyamic acid solution. The hydrophilic reagent is selected to have little or no reactivity with amines or carboxylic acids, and is of the... | 09/28/1993 |
| 5218040 | Light-stabile, reactive two-component PUR paints which cure at room temperature The invention relates to light-stabile, reactive two-component PUR paints which cure at room temperature and are comprised of: a) isocyanate prepolymers blocked with certain sterically hindered piperidine derivatives; and b) (cyclo)aliphatic polyamines and/or ... | 06/08/1993 |
| 5212210 | Energy curable compositions having improved cure speeds A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated ... | 05/18/1993 |
| 5208314 | Dual cure casting resin The use of a monomer as the solvent in both components of a urethane polymerization system eliminates the need for the expenditure of much energy to remove solvent from the cured resin. The exotherm of the urethane cure supplies the heat for the activatio... | 05/04/1993 |
| 5206331 | Sealant composition comprising moisture curable isocyanurate containing compound At least some of the isocyanate groups in the cured polyurethane sealant of this invention have the isocyanurate structure. A moisture-curing sealant composition of the invention comprises an active isocyanato-terminated isocyanate prepolymer containing a... | 04/27/1993 |
| 5175228 | Two-component primerless urethane-isocyanurate adhesive compositions having high temperature resistance A two-component polyurethane composition has good shelf stability and the adhesive made by curing the same has good high temperature stability and no adhesion loss after high temperture bake. The base or prepolymer component containing a primary hydroxyl ... | 12/29/1992 |
| 5142015 | Unsaturated urethanized polyester resins, a process for their production and their use for the production of coatings The present invention relates to a process for the production of olefinically unsaturated polyester resins containing at least 0.025 moles of urethane groups per 100 g of resin by reacting A) olefinically unsaturated polyester resins which contain alcoholic ... | 08/25/1992 |
| 5134216 | Epoxide-containing two-component polyurethane adhesives Improved two-component polyurethane adhesives contain an isocyanate and a stabilized epoxide and at least one isocyanate-reactive compound.... | 07/28/1992 |
| 5087687 | Polyethers containing perfluoroalkyl groups, methods for their synthesis and their use as surfactants and as polyol components in the preparation of polyurethanes Polyethers are disclosed which contain perfluoroalkyl groups and have the average formula ##STR1## wherein R1 is the same or different in the polymer mixture and represents hydrogen or a fluoro group, n has an average value of 4 to 12, a h... | 02/11/1992 |
| 5070183 | Hyperbranched polyarylene Highly branched, functionalized, wholly aromatic poly(arylenes) are prepared by the polymerization of ABn -type aromatic monomers.... | 12/03/1991 |
| 5059671 | Manufacturing process of spray urethane elastomer This invention relates to a process for manufacturing a spray urethane elastomer. More particularly it relates to a process for manufacturing a solventless, non-cellular spray urethane elastomer, which comprises spraying a partial prepolymer component hav... | 10/22/1991 |
| 4933373 | Abrasive wheels A molded abrasive article comprising abrasive particles dispersed throughout and adhered within a crosslinked polyurethane binder matrix having a glass transition temperature greater than about 10° C. and a glass transition temperature range of greater t... | 06/12/1990 |
| 4760111 | High solids low-temperature curable allylether-functional polyester-urethanes Disclosed herein are allylether-functional unsaturated polyester-urethanes and curable compositions containing the same.... | 07/26/1988 |
| 4590255 | Preparation of ionomers and polyurethane elastomers from carboxylic acid-containing monoether and polyether polyol addition products A process for making metal salt (ionomers) of carboxylic acid-containing mono- and polyether polyol addition products by (1) reacting maleic acid, fumaric acid, itaconic acid, or mixtures thereof with at least one polyhydroxy-containing mono- or polyether... | 05/20/1986 |
| 4584325 | Modified aliphatic polyurethane polymers and method of preparing and using same A process of preparing a fast reacting, light stable, sprayable or injectable polyester-modified polyurethane polymer reaction product to prepare coatings or molded products, which process comprises admixing and reacting together: a trimerized or biuret a... | 04/22/1986 |
| 4552943 | Modified polyurethane liquid polymer compositions A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. In a preferred embodiment, the polymer composition further i... | 11/12/1985 |
| 4552917 | Modified polyurethane liquid polymer compositions A novel, heat curable, liquid polymer composition is disclosed which comprises a modified urethane oligomer containing terminal ethylenic unsaturation and a free radical catalyst. In a preferred embodiment, the polymer composition further includes at leas... | 11/12/1985 |
| 4522969 | Modified polyurethane liquid polymer compositions A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation, a free radical generating catalyst, and at least one additional component selected from a reinforci... | 06/11/1985 |
| 4503199 | Modified polyurethane liquid polymer compositions A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. The composition has utility in preparing molded articles and... | 03/05/1985 |
| 4452964 | Peroxide cured urethanes for application to rim and adhesives A liquefiable peroxide reactive molding composition comprising a reaction product of a polyol, an organic polyisocyanate and a hydroxyl ethylenic containing compound, said liquifiable composition having a free NCO content of less than about 0.3% by weight... | 06/05/1984 |
| 4424333 | Modified polyurethane liquid polymer compositions A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. The composition has utility in preparing molded articles and... | 01/03/1984 |
| 4374238 | One component in-mold coating composition comprising a composition having a plurality of polymerizable ethylenic double bonds and a material containing isocyanate An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being ... | 02/15/1983 |
| 4332926 | Process for the production of alkali metal silicate-organic plastics Polymerable organic compounds are emulsified with aqueous alkali metal silicate solutions then polymerized with a catalyst such as a peroxide type catalyst thereby producing an alkali metal silicate organic plastic which may be used as an adhesive or as m... | 06/01/1982 |