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Class Information
Number: 521/919
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Sintered product
Description: Subject matter involving a product having voids therebetween and which products are usually formed by agglomerating or uniting particles together.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7282466 |
Sulfur-functionalized carbon nanoarchitectures as porous, high-surface-area supports for precious metal catalysts |
Oct. 16, 2007 |
| 7056455 |
Process for the preparation of nanostructured materials |
Jun. 6, 2006 |
| 6224961 |
Absorbent macrostructure made from mixtures of different hydrogel-forming absorbent polymers for improved fluid handling capability |
May. 1, 2001 |
| 6171532 |
Method of stabilizing sintered foam and of producing open-cell sintered foam parts |
Jan. 9, 2001 |
| 6136948 |
Sinterable semi-crystalline powder and near-fully dense article formed therewith |
Oct. 24, 2000 |
| 6074475 |
Thermosetting syntactic foams and their preparation |
Jun. 13, 2000 |
| 6068915 |
Thermosetting syntactic foams and their preparation |
May. 30, 2000 |
| 5989467 |
Ceramic foam precursor resin composition |
Nov. 23, 1999 |
| 5990268 |
Sinterable semi-crystalline powder and near-fully dense article formed therewith |
Nov. 23, 1999 |
| 5705538 |
Composition for obtaining foamed polyvinylchloride material and method of obtaining it |
Jan. 6, 1998 |
| 5677047 |
Process for producing microporous PTFE |
Oct. 14, 1997 |
| 5648450 |
Sinterable semi-crystalline powder and near-fully dense article formed therein |
Jul. 15, 1997 |
| 5643512 |
Methods for producing ceramic foams using pre-ceramic resins combined with liquid phenolic resin |
Jul. 1, 1997 |
| 5641442 |
Air- and water-permeable rubber and method for producing same |
Jun. 24, 1997 |
| 5527877 |
Sinterable semi-crystalline powder and near-fully dense article formed therewith |
Jun. 18, 1996 |
| 5514231 |
Process for producing microporous PTFE |
May. 7, 1996 |
| 5510176 |
Polytetrafluoroethylene porous film |
Apr. 23, 1996 |
| 5468543 |
Process for producing a ski coating strip made of ultra high molecular-weight polyethylene |
Nov. 21, 1995 |
| 5428076 |
Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
Jun. 27, 1995 |
| 5397759 |
Hollow porous microspheres made from dispersed particle compositions |
Mar. 14, 1995 |
| 5385780 |
Sinterable mass of polymer powder having resistance to caking and method of preparing the mass |
Jan. 31, 1995 |
| 5372766 |
Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
Dec. 13, 1994 |
| 5324561 |
Porous, absorbent macrostructures of bonded absorbent particles surface crosslinked with cationic amino-epichlorohydrin adducts |
Jun. 28, 1994 |
| 5324753 |
Process for the preparation of foamed propylene polymer articles |
Jun. 28, 1994 |
| 5225123 |
Methods for producing hollow microspheres made from dispersed particle compositions |
Jul. 6, 1993 |
| 5212143 |
Hollow porous microspheres made from dispersed particle compositions |
May. 18, 1993 |
| 5154866 |
Molding process for preparing porous polytetrafluoroethylene articles |
Oct. 13, 1992 |
| 5124364 |
Composite foams of low thermal conductivity |
Jun. 23, 1992 |
| 5124188 |
Porous, absorbent, polymeric macrostructures and methods of making the same |
Jun. 23, 1992 |
| 5102597 |
Porous, absorbent, polymeric macrostructures and methods of making the same |
Apr. 7, 1992 |
| 5035275 |
Method of controlling the pyrolysis rate of a plastic foam |
Jul. 30, 1991 |
| 4977196 |
Solid state polymerization of porous pills made by compacting polyester prepolymers |
Dec. 11, 1990 |
| 4957945 |
Preparation of ultra high molecular weight polyester |
Sep. 18, 1990 |
| 4942092 |
Extruded porous articles of polyimide and continuous preparation of the same |
Jul. 17, 1990 |
| 4925880 |
Composition and process for making porous articles from ultra high molecular weight polyethylene |
May. 15, 1990 |
| 4912176 |
Sintered polybenzimidazole/polyaryleneketone articles and method of manufacture |
Mar. 27, 1990 |
| 4882113 |
Heterogeneous elastomeric compositions containing a fluoroelastomer and PTFE and methods for manufacturing said compositions |
Nov. 21, 1989 |
| 4880843 |
Composition and process for making porous articles from ultra high molecular weight polyethylene |
Nov. 14, 1989 |
| 4870116 |
Dye-containing porous plastic element and method of making it |
Sep. 26, 1989 |
| 4863974 |
Bone growth matrix and process for making it |
Sep. 5, 1989 |
| 4849497 |
Solid state polymerization of porous pills made by compacting polyester prepolymers |
Jul. 18, 1989 |
| 4797243 |
Dye-containing porous plastic element and method of making it |
Jan. 10, 1989 |
| 4777154 |
Hollow microspheres made from dispersed particle compositions and their production |
Oct. 11, 1988 |
| 4772516 |
Stable methylpolydisilylazane polymers |
Sep. 20, 1988 |
| 4760102 |
Porous polytetrafluoroethylene material |
Jul. 26, 1988 |
| 4735626 |
Air freshener unit |
Apr. 5, 1988 |
| 4725392 |
Compression moldable aromatic polyamide powder and process for producing a compression molded article from the same |
Feb. 16, 1988 |
| 4716215 |
Compression moldable aromatic polyamide powder |
Dec. 29, 1987 |
| 4671909 |
Method for making hollow porous microspheres |
Jun. 9, 1987 |
| 4650815 |
Foamed articles of fluorocarbon resins |
Mar. 17, 1987 |
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