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Class Information
Number: 521/82
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Process of forming a cellular product subsequent to solid polymer formation in the presence of a stated ingredient, noncellular composition capable of forming a cellular product and containing a stated ingredient, or process of preparing same
Description: Subject matter wherein cells are formed subsequent to the formation of a solid polymer and wherein the cell formation is performed in the presence of a stated ingredient.
Sub-classes under this class:
| Class Number |
Class Name |
Patents |
| 521/85 |
Ingredient contains a boron or phosphorus atom |
249 |
| 521/97 |
Ingredient contains a carbon atom double-bonded to oxygen, e.g., carbon dioxide, carboxylic acid, etc. |
353 |
| 521/92 |
Ingredient contains a metal atom |
442 |
| 521/91 |
Ingredient contains a silicon atom |
296 |
| 521/89 |
Ingredient contains a sulfur atom |
211 |
| 521/96 |
Ingredient contains an -o-o- group |
138 |
| 521/98 |
Ingredient contains only c and h atoms, only c and halogen atoms, or only c, h, and halogen atoms |
454 |
| 521/90 |
Ingredient is a heterocyclic compound |
148 |
| 521/94 |
Ingredient is a nitrogen containing compound |
272 |
| 521/87 |
Ingredient is aldehyde or ketone |
51 |
| 521/83 |
Ingredient is asphaltic, bituminous, or water settable inorganic material, e.g., cement, plaster of paris, etc. |
103 |
| 521/88 |
Ingredient is ether, alcohol, or inorganic alcoholate, e.g., phenol, etc. |
340 |
| 521/86 |
Ingredient is organic silicon compound |
81 |
| 521/84.1 |
Ingredient is protein, carbohydrate, or natural resin |
269 |
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7425288 |
Method for preparing an open porous polymer material and an open porous polymer material |
Sep. 16, 2008 |
| 7279504 |
Expandable vinylaromatic polymers and process for their preparation |
Oct. 9, 2007 |
| 7230037 |
Method for mixing a polyol component and an isocyanate component |
Jun. 12, 2007 |
| 7114503 |
Process for producing an open celled foam |
Oct. 3, 2006 |
| 7074880 |
Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same |
Jul. 11, 2006 |
| 7067563 |
Binding agents and binding agent compositions containing alkoxy silyl groups, methods of production and use |
Jun. 27, 2006 |
| 7049348 |
Resorbable structure for treating and healing of tissue defects |
May. 23, 2006 |
| 6984671 |
Sinterable structures and method |
Jan. 10, 2006 |
| 6943200 |
Water unstable foam compositions |
Sep. 13, 2005 |
| 6841582 |
Thermoplastic elastomer composition, foam made from the same, and process for producing foam |
Jan. 11, 2005 |
| 6831113 |
Amine-modified epoxy resin reacted in presence of latent hardener |
Dec. 14, 2004 |
| 6787580 |
Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom |
Sep. 7, 2004 |
| 6759080 |
Process for making foams by photopolymerization of emulsions |
Jul. 6, 2004 |
| 6723762 |
Foamable vinyl chloride-base resin compositions |
Apr. 20, 2004 |
| 6723761 |
Microcellular foaming |
Apr. 20, 2004 |
| 6706773 |
Process for preparing a foam component |
Mar. 16, 2004 |
| 6677040 |
Expanded polypropylene particles |
Jan. 13, 2004 |
| 6632850 |
Microporous materials and methods of making the same |
Oct. 14, 2003 |
| 6630167 |
Hyaluronic acid anti-adhesion barrier |
Oct. 7, 2003 |
| 6605648 |
Sinterable structures and method |
Aug. 12, 2003 |
| 6596124 |
Forming process for cellulose paper based honeycomb structures |
Jul. 22, 2003 |
| 6593450 |
2,7-aryl-9-substituted fluorenes and 9-substituted fluorene oligomers and polymers |
Jul. 15, 2003 |
| 6586501 |
Aggregates having attached polymer groups and polymer foams |
Jul. 1, 2003 |
| 6555638 |
Production of water-expandable styrene polymers |
Apr. 29, 2003 |
| 6548562 |
Foamed thermo-elastic article |
Apr. 15, 2003 |
| 6545062 |
Production of water-expandable styrene polymers |
Apr. 8, 2003 |
| 6514632 |
Fluorene-containing polymers and compounds useful in the preparation thereof |
Feb. 4, 2003 |
| 6512083 |
Fluorene-containing polymers and compounds useful in the preparation thereof |
Jan. 28, 2003 |
| 6465532 |
Co-continuous interconnecting channel morphology polymer having controlled gas transmission rate through the polymer |
Oct. 15, 2002 |
| 6451866 |
Spongy rubber body |
Sep. 17, 2002 |
| 6451348 |
Method of manufacturing porous matrix-type controlled release systems using emulsion technique |
Sep. 17, 2002 |
| 6444714 |
Method for producing expandable polystyrene particles |
Sep. 3, 2002 |
| 6420442 |
Flame-proofed polystyrene foamed materials |
Jul. 16, 2002 |
| 6403222 |
Wax-modified thermosettable compositions |
Jun. 11, 2002 |
| 6387968 |
Method for producing water expandable styrene polymers |
May. 14, 2002 |
| 6384094 |
Method for producing expandable styrene polymers containing exfoliated graphite particles |
May. 7, 2002 |
| 6355699 |
Process for manufacturing biomedical foams |
Mar. 12, 2002 |
| 6340713 |
Expandable styrene polymers containing graphite particles |
Jan. 22, 2002 |
| 6316512 |
Silane-grafted materials for solid and foam applications |
Nov. 13, 2001 |
| 6310109 |
Process for the preparation of polymer particles |
Oct. 30, 2001 |
| 6299809 |
Method and composition for making foamed polyethylene material |
Oct. 9, 2001 |
| 6300385 |
Organic porous material |
Oct. 9, 2001 |
| 6278021 |
Reduced particle-size urea |
Aug. 21, 2001 |
| 6258864 |
Polymer foam containing chemically modified carbonaceous filler |
Jul. 10, 2001 |
| 6255449 |
Fluorene-containing polymers and compounds useful in the preparation thereof |
Jul. 3, 2001 |
| 6255447 |
2,7-aryl-9-substituted fluorenes and 9-substituted fluorene oligomers and polymers |
Jul. 3, 2001 |
| 6232354 |
Microcellular polymer foams and method for their production |
May. 15, 2001 |
| 6228897 |
Continuous processing of powder coating compositions |
May. 8, 2001 |
| 6228898 |
Biodegradable resin foam and method and apparatus for producing same |
May. 8, 2001 |
| 6225367 |
Polymers |
May. 1, 2001 |
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