Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
PatentStorm News
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 |
| 6042765 | Method for producing a fiber-reinforced thermoplastic resin foamed product A method of the invention can produce a fiber-reinforced thermoplastic resin foamed product having less unevenness in a thickness of a surface layer and excellent mechanical strength. In the method, a fiber-reinforced thermoplastic resin sheet is continuo... | 03/28/2000 |
| 6029615 | Water heater construction and fabrication method therefor A water heater including a tank, a cylindrical jacket surrounding the tank to provide an insulating space therebetween and a cover member mounted on top of the jacket to close off the top of the insulating space. An insulating wall is provided in the insu... | 02/29/2000 |
| 6010650 | Production of pipes insulated with foams A process for producing pipes insulated with foams comprises providing, between an inner carrier pipe and an outer pipe arranged parallel thereto, a holder which is provided with at least one aperture and is mounted so that it can be moved axially and pos... | 01/04/2000 |
| 5984414 | Headrest In forming a donut-like headrest under a foaming process, a sealing garnish element is provided, which includes a garnish portion and an edge abutment portion. Prior to a foaming step, the sealing garnish element is brought to a donut-like trim cover asse... | 11/16/1999 |
| 5979371 | Foam distribution jacket and method of insulating a hot water heater with expandable foam material A foam distribution jacket (10) for containing an insulating expandable liquid foam mixture (44) prior to expansion into a space (17) between a hot water tank (22) and an outer casing (29) secured thereabout. The jacket (10) comprises a pair of sheets (11... | 11/09/1999 |
| 5958533 | Covered roll and a method for making the same The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll substrate and the outer cover, or cover. A compressive layer has the properties o... | 09/28/1999 |
| 5908059 | Filling the annulus between concentric tubes with resin Concentric conduits are supplied for the purpose of minimizing heat transfer from within the inner conduit through the outer conduit. The air gap or annulus around the inner conduit is filled with a resin mixture which is mixed with vermiculite and minera... | 06/01/1999 |
| 5900195 | Protection of pipeline joint connections A method and apparatus for protecting exposed pipeline joints on weight coated pipelines used in offshore applications. The method allows quick installation on a lay barge where pipeline sections are being welded together for offshore installation. The me... | 05/04/1999 |
| 5895612 | Method of making abrading tools An abrasive tool includes a rotatable hub from which extends a bundle of plastic abrasive monofilaments. The bundle has a high filament count and each filament includes a substantial amount of abrasive uniformly entrained therein. After the bundle is secu... | 04/20/1999 |
| 5885494 | Method of forming foamed fluoropolymer composites Fluoropolymer is advantageously foamed by first forming a composite structure of a layer of the fluoropolymer to be foamed and a layer of different material such as a different fluoropolymer not to be foamed, followed by heating the composite structure to... | 03/23/1999 |
| 5874030 | Method of manufacturing foamed product with skin and method of manufacturing said skin A method of manufacturing a skin for foamed product involves the steps of: (a) not only preparing a plurality of flat skin forming pieces 2 to 5 by defining a skin 13 for covering an annular foamed body Y into a plurality of skins in radial directions and... | 02/23/1999 |
| 5868980 | Method for masking components of a hot water tank from insulation A method for masking components of a hot water tank from insulation wherein a carrier sheet containing a pair of inflatable rings is insertable into the space between the inner tank and outer shell of the hot water tank. The inflatable rings surround elec... | 02/09/1999 |
| 5833897 | Method of forming tossable device including game-ball unit A method of forming a ball-shaped unit including (1) molding an inner core subunit from a high-resilience, polyurethane foam material, (2) lining the wall of a mold cavity which is larger than such a formed inner core subunit with a thin film of an outer,... | 11/10/1998 |
| 5779951 | Method of forming a vehicle wheel having injection molded annular filler ring in wheel cavity An improved vehicle wheel construction having an injection molded generally annular filler ring disposed in a radially inwardly facing circumferential cavity of the wheel to prevent material from accumulating in the circumferential cavity of the wheel and... | 07/14/1998 |
| 5780131 | Covered roll and a method for making the same The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll and the outer cover, or topstock. A compressive layer has the properties of being... | 07/14/1998 |
| 5768668 | Toner supply roll having openings in skin layer of porous cylindrical polyurethane sponge structure, and method of producing the same A toner supply roll including a metal shaft and a cylindrical soft polyurethane sponge structure formed on an outer circumferential surface of the metal shaft by foam molding of a polyurethane material in a mold cavity of a mold. The sponge structure havi... | 06/16/1998 |
| 5753154 | Method of producing a conductive roll A conductive roll including a conductive shaft, a conductive rubber foam layer formed on an outer circumferential surface of the conductive shaft, and a semi-conductive solid rubber layer formed on an outer circumferential surface of the conductive rubber... | 05/19/1998 |
| 5714175 | Apparatus for producing a multilayer molded article An apparatus for producing a multilayer molded article including a resin body and at least one sheet of a skin material, an edge part of which is present in a surface area of the resin body. The apparatus includes a mold, and a clamping device for clampin... | 02/03/1998 |
| 5711256 | Apparatus for masking components of a hot water tank from insulation A method and apparatus for masking components of a hot water tank from insulation wherein a carrier sheet containing a pair of inflatable rings is insertable into the space between the inner tank and outer shell of the hot water tank. The inflatable rings... | 01/27/1998 |
| 5706869 | Filling the annulus between concentric tubes with resin Concentric conduits are supplied for the purpose of minimizing heat transfer from within the inner conduit through the outer conduit. The air gap or annulus around the inner conduit is filled with a resin mixture which is mixed with vermiculite and minera... | 01/13/1998 |
| 5705108 | Method for making edge for loudspeaker diaphragm An edge for loudspeaker diaphragm is made by disposing a diaphragm one of a pair of mating molds, disposing a strip-shaped base material of the edge on the said one of the molds, and hot-molding them with the other mold mated with the one mold. Foaming ac... | 01/06/1998 |
| 5682666 | Method of making a water heater capable of being hung from a support A method of making a water heater capable of being hung from a support, which includes a water tank, a water inlet, a water outlet, and a jacket positioned around the water tank so as to define a space between the water tank and the jacket. Foamed insulat... | 11/04/1997 |
| 5677026 | Self-standing insulating jacket for a hot water tank An inflatable, self-standing, transparent insulating jacket for a hot water tank is disclosed. The jacket is comprised of an inflatable hood, a platform and an attachment means. The hood surrounds, but is spaced outwardly from, the hot water tank. The hoo... | 10/14/1997 |
| 5660771 | Molding process for forming a sealing gasket on filter media In order to prevent the formation of flash on a gasket used to seal a filter element when the filter element is mounted in a housing to filter a fluid, such as air for an internal combustion engine, a molding method and apparatus utilizes a pair of mold c... | 08/26/1997 |
| 5650105 | Method for making a loudspeaker cone with an integral surround A method for making a novel, relatively low-cost loudspeaker cone assembly with an integral suspension rim. The method is for making a cone assembly wherein a cone body having an outer free edge is placed within an open female mold having an annular chann... | 07/22/1997 |
| 5628944 | Method and apparatus for molding two-color polyurethane parts by RIM Provided is a method of making a multi-property polyurethane part by RIM having a surface layer and an interior layer. The surface layer and the interior layer have different properties. The pressure in the cavity of the mold is reduced and a surface form... | 05/13/1997 |
| 5622663 | Method for preparing a continuous foam profile containing a filamentary core This invention provides a continuous profile comprising a crosslinked foam matrix and a continuous filament embedded within the matrix. The profile is prepared by 1) extruding in an upward direction a composite consisting essentially of a foamable and cro... | 04/22/1997 |
| 5609953 | Plastic molded articles having resin fibers dispersed therein A method of forming a plastic molded article includes expansion molding of a plastic raw material mixed with a blowing material. In a first step, a first-stage expansion molding is used to form a core. This is followed by a second step in which a second-s... | 03/11/1997 |
| 5601920 | Covered roll and a method for making the same The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll and the outer cover, or "topstock". A compressive layer has the properties of bei... | 02/11/1997 |
| 5591386 | Vehicle wheel with filler ring An improved wheel construction includes a disc and a rim secured together and which define a radially inwardly facing circumferential cavity in the wheel. In accordance with the present invention, a filler material is disposed in a substantial portion of ... | 01/07/1997 |
| 5587117 | Process for insulating pipes using polyurethane rigid foams by the rotational casting process The invention relates to a process for insulating pipes by applying a rigid polyurethane foam as an insulating layer and optionally an external top coating by the rotational casting process. The rigid polyurethane foam is obtained by a) an aromatic polyis... | 12/24/1996 |
| 5571462 | Method of manufacturing electric wire insulated with foamed plastic A method of manufacturing an electric wire insulated with a foamed plastic. The method includes steps of introducing a foaming agent into a fluororesin in a molten state to allow the foaming agent to dispersed in the molten resin, and extruding the molten... | 11/05/1996 |
| 5536458 | Method of molding two-color polyurethane parts by rim It is object of the present invention to provide a method by which a variable property component, such as two-color parts, having the interior covered with a thin film of the surface area is molded from polyurethanes by RIM, eliminating the need for separ... | 07/16/1996 |
| 5529731 | Method of making an elongate composite structural member An elongate composite structural member and method of making the same which is particularly useful for forming the handle of hand-held striking and prying tools or implements. The elongate structure member comprises a foamed in place molded resin composit... | 06/25/1996 |
| 5510067 | Method of producing a plastic pin having an insert in a neck portion A method of producing a plastic pin, including a bowling pin, having a cellular and/or porous core that is surrounded by a solid-walled, noncellular and nonporous shell. The shell is initially produced as a whole body in a mold. While the material of the ... | 04/23/1996 |
| 5489405 | Composite joint infill system A pair of concrete coated pipe joints welded together end to end with a gap between the concrete coatings, the gap being filled with a fast setting elastomeric polymeric infill material, either solid or foamed, and a particulate filler material, and a met... | 02/06/1996 |
| 5474721 | Method of forming an expanded composite Process using low to medium temperature thermoset epoxy composite materials and an expandable epoxy matrix material to efficiently form high strength composite parts of divers shapes in a single-one-step process. The composite material is placed within th... | 12/12/1995 |
| 5470515 | Rotational molding process for insulating pipes For insulating pipes by application of at least one insulating layer and at least one outer surface layer by rotational molding, a rigid polyurethane foam is used as the insulating layer while a solid polyurethane is used as the surface layer.... | 11/28/1995 |
| 5460762 | Method of coupling tubes or pipes by using pressure generated by expanding material Tubes or pipes are engaged on an insert and are fixed thereon in sealed manner by molding a plastics material at least over those zones of said tubes or pipes that co-operate with the insert. The plastics material is molded so as to form a cellular materi... | 10/24/1995 |
| 5425907 | Method of making a cylindrical filter cartridge A cylindrical polymer fiber filter cartridge for liquid filtration is formed by applying an acrylic latex binder, diluted with water, to a batt of thermoplastic polymer fibers and winding the batt onto a core to form a hollow fibrous cylinder while applyi... | 06/20/1995 |
