Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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 |
| 7316817 | Method and device for topical delivery of therapeutic agents to the skin A composite sheet for delivering therapeutic agents to the skin and method of use is disclosed. The composite sheet comprises a flexible porous polymer for holding and releasing the therapeutic agent in a polymer enrobing material. Micro-channels pass through the po... | 01/08/2008 |
| 7179845 | Elastomeric latex foams The invention relates generally to a stable flexible latex foam. The latex foam will contain at least one polymer having a plurality of hard domains and a plurality of soft domains, a micelle forming agent, a hydrocarbon propellant substantially free of dimethyl eth... | 02/20/2007 |
| 7118761 | Method for producing a silver-containing wound care device Wound care devices having a topically applied silver-based antimicrobial finish are provided. The finish comprises at least one silver ion-containing compound and at least one binder compound. The finish may be applied to a target substrate, such as a fiber, fabric,... | 10/10/2006 |
| 6977323 | Foam-on-film medical articles The present invention provides a medical article that includes a liquid-impervious, moisture-vapor permeable polymeric film having directly bonded thereto an absorbent, substantially nonswellable foam. ... | 12/20/2005 |
| 6660667 | Fabric coating containing energy absorbing phase change material and method of manufacturing same A coating composition for fabrics includes wetted microspheres containing a phase change material dispersed throughout a polymer binder, a surfactant, a dispersant, an antifoam agent and a thickener. Preferred phase change materials include paraffinic hyd... | 12/09/2003 |
| 6509388 | Polyurethane foams for use in wound dressings The invention provides a method of forming a polyurethane foam suitable for use as a wound-contacting layer, said method comprising: mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 4.8 meq. NCO groups/g with from 0.4 to 1.0 p... | 01/21/2003 |
| 6417315 | Preparation of conductive polyurethanes using a conductive quasi-solution A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentr... | 07/09/2002 |
| 6395794 | Stable, foamed caulk and sealant compounds and methods of use thereof Stable foam caulk, sealant and insulation compositions are disclosed. The compositions comprise solid, waxy non-ionic lipophilic surfactants having low HLB values. These surfactants, upon foamed dispensing of the composition, provide stable support for bu... | 05/28/2002 |
| 6372810 | Mechanically frothed and chemically blown polyurethane foam The present invention is a low density polyurethane foam cushion useful as an attached carpet cushion or as a detached carpet underlay. The low density foams of the present invention are prepared by a process wherein a polyurethane foam formulation is blo... | 04/16/2002 |
| 6326410 | Wound dressing comprising polyurethane foam A wound dressing has a wound-contact layer formed from a polyurethane foam. The foam comprises one part by weight of the reaction product of an isocyanate-capped prepolymer with water (and optionally other hydroxy-functional compounds), and from 0.03 to 0... | 12/04/2001 |
| 6284077 | Stable, foamed caulk and sealant compounds and methods of use thereof Stable foam caulk, sealant and insulation compositions are disclosed. The compositions comprise solid, waxy non-ionic lipophilic surfactants having low HLB values. These surfactants, upon foamed dispensing of the composition, provide stable support for bu... | 09/04/2001 |
| 6207738 | Fabric coating composition containing energy absorbing phase change material A coating composition for fabrics includes wetted microspheres containing a phase change material dispersed throughout a polymer binder, a surfactant, a dispersant, an antifoam agent and a thickener. Preferred phase change materials include paraffinic hyd... | 03/27/2001 |
| 6184331 | Preparation of conductive polyurethanes using a conductive quasi-solution A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentr... | 02/06/2001 |
| 6111051 | Preparation of conductive polyurethanes using a conductive quasi-solution A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentr... | 08/29/2000 |
| 6069184 | Method for the preparation of polyurethane elastomers A method for the production of polyurethane elastomers by reacting an isocyanate epolymer having an isocyanate content of from 5 to 10% by weight which is the reaction product of an excessive amount of a polyisocyanate containing at least 85% by weight of... | 05/30/2000 |
| 5994421 | Water-absorbent resin dispersion and polyurethane composition A water-absorbent resin dispersion comprising a water-absorbent resin (B) or a hydrous gel thereof dispersed in a liquid or heat-meltable organic active-hydrogen compound (A), wherein said resin (B) is formed by the polymerization of a water-soluble monom... | 11/30/1999 |
| 5898057 | Preparation of conductive polyurethanes using a conductive quasi-solution A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentr... | 04/27/1999 |
| 5800861 | High solid infrared absorbing compositions Infrared absorbing compositions useful as high solid coatings comprising 5-50% of a volatile solvent portion and 50-95% of a non-volatile portion which comprises a film-forming binder having dispersed within the binder opacifying polymeric beads and an in... | 09/01/1998 |
| 5731382 | Coating agents and their use in particular in the production of transparent and pigmented top coatings Coating agents are described, that are suitable for the production of pigmented or transparent top coatings, based on hydroxy-functional (meth)acrylic copolymers, aliphatic and/or cycloaliphatic polyisocyanates, solvents, and customary lacquer additives a... | 03/24/1998 |
| 5639847 | Preparation of conductive polyurethanes using a conductive quasi-solution A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentr... | 06/17/1997 |
| 5607982 | Flexible open-cell polyurethane foam A flexible open-cell polyurethane is described that is the reaction product of a mixture comprising (a) a polyisocyanate component comprising monomeric or polymeric MDI, and (b) a polyol component having at least 50% of its 0H functional groups as secondary OH... | 03/04/1997 |
| 5438107 | Condensed resin dispersion and process for its production A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherei... | 08/01/1995 |
| 5290898 | Condensed resin dispersion and process for its production A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherei... | 03/01/1994 |
| 5223570 | Method for the preparation of graft polymer dispersions having broad particle size distribution without wildly fluctuating viscosities A method for preparing graft polymer dispersions having broad particle size distribution without wildly fluctuating viscosities is disclosed. The method comprises: (a) preparing intermediate graft polyol dispersions containing 30 percent by weight or less... | 06/29/1993 |
| 5100936 | Cellulose fiber filled aminoplast resin compositions for flame retarding polyurethane foams The flame retardance of polyurethane foams is improved by dispersing in a polyol used to make the urethane foam a finely divided resin composition composed of 60-85 wt % of an aminoplast resin filled with 40 to 15 wt % of an aminoplast resin filled with 4... | 03/31/1992 |
| 5098937 | Flexible polyurethane foams and process for preparing them Flexible polyurethane foams having bulk densities within the range of from 15 to 60 kg/cm3 and a load bearing capacity, under a compression rate of 40%, higher than 50 N, obtained by the reaction of a modified polyisocyanate with a compound con... | 03/24/1992 |
| 5082867 | Flame retardant flexible polyurethane foam compositions Flame retardant additive compositions for flexible polyurethane foam comprise pentabromodiphenyl ether and non-mutagenic halogenated alkyl phosphate ester mixtures of the formula: ##STR1##... | 01/21/1992 |
| 4883832 | Preparation of polymer polyols Fluid polymer/polyol dispersions are prepared from novel polyether polyols.... | 11/28/1989 |
| 4876290 | Microencapsulation by interfacial polyaddition Microcapsules, and especially suspensions of microencapsulated colorants well adapted for the manufacture of carbonless papers, are produced by emulsifying a hydrophobic organic fluid which includes an aliphatic diisocyanate and an isocyanurate ring trime... | 10/24/1989 |
| 4725627 | Squeezable toy with dimensional memory Disclosed is a sculpted, hand-squeezable toy which possesses dimensional memory and has a predetermined dimensional memory restoration time. The toy is made by blending a foamable hydrophilic polyurethane isocyanate-functional prepolymer, a vinyl or acyli... | 02/16/1988 |
| 4555527 | Process for the preparation of acrylamide graft polymer dispersions Graft polymer dispersions are prepared by polymerizing aqueous solutions of acrylamide in unsaturation-containing polyols. These dispersions are employed in preparing polyurethane products.... | 11/26/1985 |
| 4513124 | Preparation of a copolymer polyahl using an addition polymerizable adduct of a polymeric monoahl and an ethylenically unsaturated coreactant An adduct of a monoahl, e.g., a monohydroxyl polyalkylene oxide, and an active ethylenically unsaturated coreactant monomer, methacryloyl chloride, is usefully employed in the preparation of stable copolymer dispersions of the type used in the production ... | 04/23/1985 |
| 4460711 | Instantaneous production by ejection of a flexible foamed or solid rubber mass on a substrate A flexible foamed or solid rubber mass is produced on a substrate by ejection. Two pressurized containers are used, one containing an aqueous latex dispersion together with a pressurized inert propellant and the other an aqueous coagulant solution togethe... | 07/17/1984 |
| 4419457 | Production of polyurethane foams There is provided a method of producing an open-cell polyurethane foam comprising heating a mixture of an aqueous emulsion of a polyurethane-forming composition and a fluorocarbon compound of 1 to 3 carbon atoms having a boiling point of 5° to 100° C.... | 12/06/1983 |
| 4314034 | Polyurea polyurethane foamed sponge with high wet strength An open cell polyurea polyurethane foamed sponge is produced by mixing together a resin and an aqueous pahse. The resin phase consists of a prepolymer made from a hydrophilic oxyalkylene polyol which is capped with isocyanate groups and from about 1-30% b... | 02/02/1982 |
| 4288559 | Flame resistant foam The instant invention is directed to a process for the production of flame resistant foams by the impregnation of polyurethane foams with a dispersion consisting substantially of an aluminum hydroxide, a polyurethane latex, an alumino-silicate and surface... | 09/08/1981 |
| 4260530 | Process for the preparation of polyurethane resins using stable dispersions as a starting component This invention relates to a process for the preparation of a finely divided, stable and relatively low viscosity dispersion of a polyisocyanate polyaddition product and an aminoplast and/or phenoplast and/or copolymer thereof in a hydroxyl containing comp... | 04/07/1981 |
| 4251411 | Process for the manufacture of organic polymer polyol A process for the manufacture of partially dehydrated organic polymer polyol dispersions from the reaction of polyhydroxyl compounds and aqueous polymer dispersions wherein the problem of excessive viscosity is overcome by mixing the reactants with a recy... | 02/17/1981 |
| 4208485 | Foaming composition for textile finishing and coatings An expansion agent comprising a foamable mixture of (a) 15-53 weight % of a foaming agent having 6 to 78 carbon atoms selected from the group of an ammonium salt, aliphatic amine salt and/or an alkali metal salt of an alkyl sulfate, hydroxyalkyl sulfate, ... | 06/17/1980 |
| 3989869 | Process for making a polyurethane foam sheet and composites including the sheet A process is provided for making a polyurethane mechanical foam adapted to be used as an interlayer between a plastic surface layer and a textile, the process involving frothing a non-ionic aqueous dispersion free from emulsifying agents of a polyurethane... | 11/02/1976 |
