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| Number | Title | Issue Date |
| 7282466 | Sulfur-functionalized carbon nanoarchitectures as porous, high-surface-area supports for precious metal catalysts The invention relates to sulfur-functionalized polymer gels and carbon gels, including aerogels, and such carbon gels containing platinum or metal nanoparticles. The platinum-containing gels may be useful as fuel-cell electrodes. ... | 10/16/2007 |
| 7056455 | Process for the preparation of nanostructured materials The present invention comprises a novel process for the preparation of carbon based structured materials with controlled topology, morphology and functionality. The nanostructured materials are prepared by controlled carbonization, or pyrolysis, of precursors compri... | 06/06/2006 |
| 6224961 | Absorbent macrostructure made from mixtures of different hydrogel-forming absorbent polymers for improved fluid handling capability Porous, absorbent macrostructures having improved fluid handling capabilities that include inter-particle bonded aggregates, and are useful in absorbent articles, such as diapers, adult incontinence pads and sanitary napkins, are disclosed. The inter-part... | 05/01/2001 |
| 6171532 | Method of stabilizing sintered foam and of producing open-cell sintered foam parts In a process for stabilizing a foamed starting slip material, the starting slip material which is foamed comprises the following constituents: a. inorganic sinterable material, b. a source of blowing gas, c. a framework former which forms a framework when the pH of... | 01/09/2001 |
| 6136948 | Sinterable semi-crystalline powder and near-fully dense article formed therewith A laser-sinterable powder product has been prepared having unique properties which allow the powder to be sintered in a selective laser sintering machine to form a sintered part which is near-fully dense. For most purposes, the sintered part is indistingu... | 10/24/2000 |
| 6074475 | Thermosetting syntactic foams and their preparation A low-density, syntactic foam material is provided according to the invention. The syntactic foam material is prepared by mixing together a plurality of microballoons and a finely divided solid thermosetting resin. Fibers are also preferably incorporated ... | 06/13/2000 |
| 6068915 | Thermosetting syntactic foams and their preparation A low-density, syntactic foam material is provided according to the invention. The syntactic foam material is prepared by mixing together a plurality of microballoons and a finely divided solid thermosetting resin. Fibers are also preferably incorporated ... | 05/30/2000 |
| 5990268 | Sinterable semi-crystalline powder and near-fully dense article formed therewith A laser-sinterable powder product has been prepared having unique properties which allow the powder to be sintered in a selective laser sintering machine to form a sintered part which is near-fully dense. For most purposes, the sintered part is indistingu... | 11/23/1999 |
| 5989467 | Ceramic foam precursor resin composition The present invention is embodied in a ceramic foam made by mixing a liquid pre-ceramic resin and a liquid phenolic resin, allowing the resultant mixture to chemically foam, curing the mixture for a time and at a temperature sufficiently to convert the mi... | 11/23/1999 |
| 5705538 | Composition for obtaining foamed polyvinylchloride material and method of obtaining it A foamed polyvinylchloride (PVC) material is produced by mixing of 100 mass parts of PVC with 0.5-5 mass parts of sodium alkyl sulfonate, molding of the obtained composition and followed by heating for foaming at 190°-300° C. for 3-20 mins. Molding is p... | 01/06/1998 |
| 5677047 | Process for producing microporous PTFE A substantially cylindrical bar of microporous PTFE is non-fibrillated and incorporates pores within any cylindrical surface within the bar centred about the central longitudinal axis of the bar that are of substantially uniform size and are substantially... | 10/14/1997 |
| 5648450 | Sinterable semi-crystalline powder and near-fully dense article formed therein A laser-sinterable powder product has been prepared having unique properties which allow the powder to be sintered in a selective laser sintering machine to form a sintered part which is near-fully dense. For most purposes, the sintered part is indistingu... | 07/15/1997 |
| 5643512 | Methods for producing ceramic foams using pre-ceramic resins combined with liquid phenolic resin The present invention is embodied in a method of producing a ceramic foam. The steps for producing the ceramic foam include first mixing a liquid pre-ceramic resin with a liquid phenolic resin, second allowing the resultant mixture to chemically foam, thi... | 07/01/1997 |
| 5641442 | Air- and water-permeable rubber and method for producing same An air-permeable and water-permeable rubber includes by weight 100 parts of a rubber, about 30 to 80 parts of a plastic, about 1 to 5 parts of a cross-linking agent, about 1 to 10 parts of a vulcanizing agent, about 1 to 10 parts of a rubber accelerator, ... | 06/24/1997 |
| 5527877 | Sinterable semi-crystalline powder and near-fully dense article formed therewith A laser-sinterable powder product has been prepared having unique properties which allow the powder to be sintered in a selective laser sintering machine to form a sintered part which is near-fully dense. For most purposes, the sintered part is indistingu... | 06/18/1996 |
| 5514231 | Process for producing microporous PTFE A substantially cylindrical bar of microporous PTFE is non-fibrillated and incorporates pores within any cylindrical surface within the bar centred about the central longitudinal axis of the bar that are of substantially uniform size and are substantially... | 05/07/1996 |
| 5510176 | Polytetrafluoroethylene porous film The polytetrafluoroethylene (PTFE) porous film of the invention is characterized in that the film is formed from a PTFE resin molding powder obtained by suspension polymerization and has a porosity of 40 to 80%, and removal ratio of uniform particle havin... | 04/23/1996 |
| 5468543 | Process for producing a ski coating strip made of ultra high molecular-weight polyethylene The invention concerns a process for manufacturing a strip of ski-coating material made of polyethylene of ultra high molecular weight, wherein a ski-coating strip material 4 manufactured to a thickness of 0.5 to 1.5 mm by a screw extruder, a ram extruder... | 11/21/1995 |
| 5428076 | Flexible, porous, absorbent, polymeric macrostructures and methods of making the same Flexible, porous, absorbent polymeric macrostructures having flexibility even after extended periods at elevated temperatures and/or low humidities are disclosed. The macrostructure comprises an interparticle crosslinked aggregate and an effective amount ... | 06/27/1995 |
| 5397759 | Hollow porous microspheres made from dispersed particle compositions Hollow porous microspheres of uniform diameter and of uniform wall thickness are disclosed. The walls of the hollow microspheres comprise sintered together particles which define interconnecting voids within the walls and a single central cavity in the in... | 03/14/1995 |
| 5385780 | Sinterable mass of polymer powder having resistance to caking and method of preparing the mass Particles of a fine powder of a thermoplastic synthetic resin (host powder) having a suitable broad range between its initial glass transition temperature (initial Tg) and its final Tg, are partially coated with an anti-caking coatin... | 01/31/1995 |
| 5372766 | Flexible, porous, absorbent, polymeric macrostructures and methods of making the same Flexible, porous, absorbent polymeric macrostructures having flexibility even after extended periods at elevated temperatures and/or low humidities are disclosed. The macrostructure comprises an interparticle crosslinked aggregate and an effective amount ... | 12/13/1994 |
| 5324561 | Porous, absorbent macrostructures of bonded absorbent particles surface crosslinked with cationic amino-epichlorohydrin adducts Porous, absorbent macrostructures that, upon contacting liquids such as water or body exudates (e.g., urine), swell and imbibe such liquids, and are useful in absorbent articles such as diapers, adult incontinence pads, and sanitary napkins are disclosed.... | 06/28/1994 |
| 5324753 | Process for the preparation of foamed propylene polymer articles Foamed propylene polymer articles are prepared by subjecting pre-foamed beads, that consist essentially of propylene polymers having a melt strength from 5 to 40 cN, to thermoforming by sintering.... | 06/28/1994 |
| 5225123 | Methods for producing hollow microspheres made from dispersed particle compositions Method for making hollow microspheres of substantially uniform diameter and of substantially uniform wall thickness is disclosed. The walls of the hollow microspheres comprise sintered together particles which define interconnecting voids within the walls... | 07/06/1993 |
| 5212143 | Hollow porous microspheres made from dispersed particle compositions Hollow porous microspheres of substantially uniform diameter and of substantially uniform wall thickness are disclosed. The walls of the hollow microspheres comprise sintered together particles which define interconnecting voids within the walls and a sin... | 05/18/1993 |
| 5154866 | Molding process for preparing porous polytetrafluoroethylene articles A molding process for preparing long and thick, large porous PTFE articles comprising preparation steps of a powder for molding which includes a step of gelation of PTFE powder; a pre-forming step by a ram-extrusion; a baking step of the pre-formed articl... | 10/13/1992 |
| 5124364 | Composite foams of low thermal conductivity A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of styrene polymer foam which surrounds the p... | 06/23/1992 |
| 5124188 | Porous, absorbent, polymeric macrostructures and methods of making the same Absorbent polymeric macrostructures that are porous and comprise an interparticle crosslinked aggregate having a circumscribed dry volume greater than about 10.0 mm3. The interparticle crosslinked aggregrate comprises a multiplicity of precurso... | 06/23/1992 |
| 5102597 | Porous, absorbent, polymeric macrostructures and methods of making the same Absorbent polymeric macrostructures that are porous and comprise an interparticle crosslinked aggregate having a circumscribed dry volume greater than about 10.0 mm3. The interparticle crosslinked aggregate comprises a multiplicity of precursor... | 04/07/1992 |
| 5035275 | Method of controlling the pyrolysis rate of a plastic foam The thermal shrinkage and pyrolysis rate of plastic foam moldings are successfully controlled by coating the expandable plastic beads used in the preparation of the moldings with varying amounts of substantially water-insoluble inorganic siliceous materia... | 07/30/1991 |
| 4977196 | Solid state polymerization of porous pills made by compacting polyester prepolymers High molecular weight polyester resins such as polyethylene terephthalate, are sometimes produced from low molecular weight polyester prepolymers having the same composition by solid state polymerization. The low molecular weight polyester prepolymers whi... | 12/11/1990 |
| 4957945 | Preparation of ultra high molecular weight polyester There is a growing demand for high molecular weight polyester resin. For instance, the market for high molecular weight polyethylene terephthalate resin is rapidly expanding. High molecular polyethylene terephthalate resin is currently being used in vast ... | 09/18/1990 |
| 4942092 | Extruded porous articles of polyimide and continuous preparation of the same An extruded porous article, which can be prepared by a ram-extruding method, comprising an aggregated aromatic polyimide powder which has a heat loss ratio of not more than 2 wt. %, the heat loss ratio being measured at 360° C. for 1 hour, and a mean par... | 07/17/1990 |
| 4925880 | Composition and process for making porous articles from ultra high molecular weight polyethylene Porous shaped articles made from a molded composite of ultra high molecular weight polyethylene and polyethylene wax are disclosed. These articles are produced by free-sintering a non intensively mixed blend of UHMW-PE particles and particles of a polyeth... | 05/15/1990 |
| 4912176 | Sintered polybenzimidazole/polyaryleneketone articles and method of manufacture Sinterd molded article having improved thermal resistance and strength formed from a homogeneous mixture comprising from about 5 to 75 percent by weight polybenzimidazole and from about 95 to 25 percent by weight of a polyaryleneketone.... | 03/27/1990 |
| 4882113 | Heterogeneous elastomeric compositions containing a fluoroelastomer and PTFE and methods for manufacturing said compositions A composition comprising a homogenous mixture of unsintered porous fluoropolymer particles and fluoroelastomers, processes for manufacturing the composition, and devices made from the composition.... | 11/21/1989 |
| 4880843 | Composition and process for making porous articles from ultra high molecular weight polyethylene Porous shaped articles made from a molded composite of ultra high molecular weight polyethylene and polyethylene wax are disclosed. These articles are produced by free-sintering a non intensively mixed blend of UHMW-PE particles and particles of a polyeth... | 11/14/1989 |
| 4870116 | Dye-containing porous plastic element and method of making it A dye-containing porous plastic element, comprising a plastic body having interconnected capillary passageways, and a dry, water-soluble dye located within the passageways. The passageways extend to at least one surface of the body, and the size of the pa... | 09/26/1989 |
| 4863974 | Bone growth matrix and process for making it The present invention provides for a bone growth material for filling in defects or hollow portions of bones to be ingrown by and coalesce with bone tissues wherein the bone growth material is comprised of expanded PTFE and calcium phosphate.... | 09/05/1989 |
