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Class Information
Number: 521/61
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 preparing a cellular product by removal of material from a solid polymer-containing matrix without expanding the matrix; composition which is nonexpandible and is designed to form a cellular product by said process; or process of preparing said composition
Description: Subject matter wherein a cellular product is produced by removing a material from a polymeric composition containing a solid polymer and wherein removal is accomplished without the composition being expanded.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7456228 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Nov. 25, 2008 |
| 7446131 |
Porous polymeric matrices made of natural polymers and synthetic polymers and optionally at least one cation and methods of making |
Nov. 4, 2008 |
| 7442754 |
Molecular imprinting of small particles, and production of small particles from solid state reactants |
Oct. 28, 2008 |
| 7435761 |
Microporous polyethylene film and method of producing the same |
Oct. 14, 2008 |
| 7425583 |
Ion exchanger |
Sep. 16, 2008 |
| 7361694 |
Durable foam of olefin polymers, methods of making foam and articles prepared from same |
Apr. 22, 2008 |
| 7361693 |
Low density polymer beads |
Apr. 22, 2008 |
| 7332531 |
Microporous high density polyethylene film |
Feb. 19, 2008 |
| 7319114 |
Hollow polymer particles, method for preparing hollow polymer particles, porous ceramic filter, and method for preparing porous ceramic filter |
Jan. 15, 2008 |
| 7291653 |
Preparation of hydrophobic organic aeorgels |
Nov. 6, 2007 |
| 7285591 |
Polymer-nanotube composites, fibers, and processes |
Oct. 23, 2007 |
| 7211607 |
Method for producing high surface area chromia materials for catalysis |
May. 1, 2007 |
| 7198823 |
Siloxane-based resin containing germanium and an interlayer insulating film for a semiconductor device using the same |
Apr. 3, 2007 |
| 7173066 |
Ion exchanger |
Feb. 6, 2007 |
| 7166644 |
Porous polymeric membrane comprising vinylidene fluoride |
Jan. 23, 2007 |
| 7163965 |
Process for producing porous composite materials |
Jan. 16, 2007 |
| 7151120 |
Degradable porous materials with high surface areas |
Dec. 19, 2006 |
| 7148264 |
Method of producing macroporous cross-linked polymer particles |
Dec. 12, 2006 |
| 7115673 |
Photosensitive resin composition, porous resin, circuit board, and wireless suspension board |
Oct. 3, 2006 |
| 7108922 |
Siloxane-based resin and interlayer insulating film formed using the same |
Sep. 19, 2006 |
| 7097781 |
Method for manufacturing porous structure and method for forming pattern |
Aug. 29, 2006 |
| 7090784 |
Method for manufacturing porous structure and method for forming pattern |
Aug. 15, 2006 |
| 7091287 |
Nanopore forming material for forming insulating film for semiconductors and low dielectric insulating film comprising the same |
Aug. 15, 2006 |
| 7081216 |
Foams and coatings |
Jul. 25, 2006 |
| 7081272 |
Coating composition for forming low-refractive index thin layers |
Jul. 25, 2006 |
| 7078441 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger |
Jul. 18, 2006 |
| 7074335 |
Method of producing hierarchical porous beads |
Jul. 11, 2006 |
| 7071125 |
Precursors for film formation |
Jul. 4, 2006 |
| 7056455 |
Process for the preparation of nanostructured materials |
Jun. 6, 2006 |
| 7026364 |
Ion exchanger |
Apr. 11, 2006 |
| 6989405 |
Resinous filter for ink-jet recording apparatus |
Jan. 24, 2006 |
| 6967222 |
Porous optical materials |
Nov. 22, 2005 |
| 6929764 |
Polymers having ordered, monodisperse pores and their corresponding ordered, monodisperse colloids |
Aug. 16, 2005 |
| 6900249 |
Durable, absorbent latex foam composition having high vertical wicking |
May. 31, 2005 |
| 6855743 |
Reinforced, laminated, impregnated, and composite-like materials as crosslinked polyvinyl alcohol hydrogel structures |
Feb. 15, 2005 |
| 6841580 |
Organic porous material, process for manufacturing the same, and organic porous ion exchanger |
Jan. 11, 2005 |
| 6818673 |
Method for producing silicone foam utilizing a mechanical foaming agent |
Nov. 16, 2004 |
| 6797738 |
Open pore biodegradable matrices |
Sep. 28, 2004 |
| 6780499 |
Ordered two-phase dielectric film, and semiconductor device containing the same |
Aug. 24, 2004 |
| 6765028 |
Porous fibers from natural/synthetic polymer blends |
Jul. 20, 2004 |
| 6765030 |
Methods of forming polymeric structures using carbon dioxide and polymeric structures formed therapy |
Jul. 20, 2004 |
| 6702965 |
Method of forming a porous composite product, in particular with a high specific surface |
Mar. 9, 2004 |
| 6673847 |
Water immiscible porogen removal process |
Jan. 6, 2004 |
| 6670404 |
Polymeric foam powder processing techniques, foam powders products, and foams produced containing those foam powders |
Dec. 30, 2003 |
| 6660176 |
Molecular imprinting of small particles, and production of small particles from solid state reactants |
Dec. 9, 2003 |
| 6632849 |
Porous carbonized film and process for its production |
Oct. 14, 2003 |
| 6627670 |
Durable, absorbent latex foam composition having high vertical wicking |
Sep. 30, 2003 |
| 6608117 |
Methods for the preparation of cellular hydrogels |
Aug. 19, 2003 |
| 6583187 |
Continuous processing of powder coating compositions |
Jun. 24, 2003 |
| 6565763 |
Method for manufacturing porous structure and method for forming pattern |
May. 20, 2003 |
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