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Class Information
Number: 521/918
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Physical aftertreatment of a cellular product
Description: Subject matter involving physically treating a cellular product.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7389802 |
Tire with double layer innerliner |
Jun. 24, 2008 |
| 7214724 |
Method for cross-linking a foamable plastic |
May. 8, 2007 |
| 7056455 |
Process for the preparation of nanostructured materials |
Jun. 6, 2006 |
| 6949588 |
Perforated foams |
Sep. 27, 2005 |
| 6720362 |
Perforated foams |
Apr. 13, 2004 |
| 6583193 |
Polyolefin foam useful for sound and thermal insulation |
Jun. 24, 2003 |
| 6582811 |
Method of and material for purification of physical liquids of organism, and method of producing the material |
Jun. 24, 2003 |
| 6368742 |
Polypropylene microporous membrane for battery separator |
Apr. 9, 2002 |
| 6362243 |
Method for production of porous cross-linked polymer |
Mar. 26, 2002 |
| 6337354 |
Ink wastage absorber and ink supporter |
Jan. 8, 2002 |
| 6296842 |
Process for the preparation of polymer-based sustained release compositions |
Oct. 2, 2001 |
| 6048607 |
Porous film of high molecular weight polyolefin and process for producing same |
Apr. 11, 2000 |
| 5976616 |
Polyurethane foam materials with skin conditioning additives |
Nov. 2, 1999 |
| 5973018 |
Process for producing shaped phenolic foams |
Oct. 26, 1999 |
| 5961814 |
Pitch foam products |
Oct. 5, 1999 |
| 5958571 |
Material for a gasket coated with foam rubber |
Sep. 28, 1999 |
| 5945084 |
Low density open cell organic foams, low density open cell carbon foams, and methods for preparing same |
Aug. 31, 1999 |
| 5900442 |
Flexible polyurethane foams |
May. 4, 1999 |
| 5900087 |
Preparation of flexible, flame-bondable polyurethane-polyether foams having improved adhesion |
May. 4, 1999 |
| 5858501 |
Evacuated insulation panel having non-wrinkled surfaces |
Jan. 12, 1999 |
| 5854295 |
Microcellular foams containing an infrared attenuating agent and a method of using |
Dec. 29, 1998 |
| 5843241 |
Composition and method for selectively absorbing liquid hydrocarbon from a floor or other hard surface |
Dec. 1, 1998 |
| 5844014 |
Compressed, extruded, evacuated open-cell polymer foams and evacuated insulation panels containing them |
Dec. 1, 1998 |
| 5844011 |
Composition and method for selectively absorbing liquid hydrocarbon from a floor or other hard surface |
Dec. 1, 1998 |
| 5821272 |
Method for post-treatment of polyolefin resin pre-expanded particles |
Oct. 13, 1998 |
| 5668188 |
Process for preparing silicon carbide foam |
Sep. 16, 1997 |
| 5504124 |
Process for removing unwanted material from wanted material |
Apr. 2, 1996 |
| 5482980 |
Methods for preparing flexible, open-celled, polyester and polyether urethane foams and foams prepared thereby |
Jan. 9, 1996 |
| 5449427 |
Processing low dielectric constant materials for high speed electronics |
Sep. 12, 1995 |
| 5447963 |
Method for reducing volatile emissions generated during the preparation of foams and fabrication of foam products |
Sep. 5, 1995 |
| 5413848 |
Insulating foam of low thermal conductivity and method of preparation |
May. 9, 1995 |
| 5362760 |
Temperature resistant microporous film |
Nov. 8, 1994 |
| 5300272 |
Microcellular carbon foam and method |
Apr. 5, 1994 |
| 5296510 |
Method for treating the surface of a thin porous film material of tetrafluoroethylene resin |
Mar. 22, 1994 |
| 5268395 |
Microcellular carbon foam and method |
Dec. 7, 1993 |
| 5260345 |
Absorbent foam materials for aqueous body fluids and absorbent articles containing such materials |
Nov. 9, 1993 |
| 5252626 |
Method for treating the surface of a thin porous film material |
Oct. 12, 1993 |
| 5234969 |
Cured phenolic foams |
Aug. 10, 1993 |
| 5223543 |
Reduction in polystyrene with activated agent |
Jun. 29, 1993 |
| 5219894 |
Method for treating the surface of a thin porous film material |
Jun. 15, 1993 |
| 5217505 |
Carbonaceous adsorbents for prevention of carbon bed fires |
Jun. 8, 1993 |
| 5213751 |
Method of producing a felted porous polychloroprene latex foam |
May. 25, 1993 |
| 5214073 |
Porous, crystallized, aromatic polycarbonate prepolymer, a porous, crystallized aromatic polycarbonate, and production methods |
May. 25, 1993 |
| 5208003 |
Microcellular carbon foam and method |
May. 4, 1993 |
| 5204377 |
Porous, crystallized, aromatic polycarbonate prepolymer, a porous, crystallized aromatic polycarbonate, and production methods |
Apr. 20, 1993 |
| 5190987 |
Method for drying foams |
Mar. 2, 1993 |
| 5183514 |
Process for dissolving or removing rigid polyurethane foam by contacting with 1,2-dimethyl imidazole |
Feb. 2, 1993 |
| 5171756 |
Three stage cooling of porous materials |
Dec. 15, 1992 |
| 5134174 |
Polypropylene microporous film |
Jul. 28, 1992 |
| 5128379 |
Process for rapid cooling of polyurethane foam |
Jul. 7, 1992 |
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