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Class Information
Number: 521/133
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. > Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water > Ingredient is gaseous at ambient conditions, e.g., air, oxygen, etc.
Description: Subject matter wherein the stated ingredient is a gas at normal room temperature and pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7378454 |
Polyurethane composition and polishing pad |
May. 27, 2008 |
| 7288211 |
Hydrofluorocarbon blown foam and method for preparation thereof |
Oct. 30, 2007 |
| 7098255 |
Process for producing polyurethane foam |
Aug. 29, 2006 |
| 6797736 |
Method of forming high resilience slabstock polyurethane foam |
Sep. 28, 2004 |
| 6784217 |
Process for making high resilience foams |
Aug. 31, 2004 |
| 6784218 |
Method of forming high resilience slabstock polyurethane foam displaying latex-like characteristics |
Aug. 31, 2004 |
| 6780895 |
Polyurethane carpet backings with improved tuft bind |
Aug. 24, 2004 |
| 6777455 |
Process for producing polyurethane foam |
Aug. 17, 2004 |
| 6774153 |
Process for preparing a free rise or slabstock flexible polyurethane foam |
Aug. 10, 2004 |
| 6653362 |
Process for producing flexible polyurethane foam |
Nov. 25, 2003 |
| 6617369 |
Process for making visco-elastic foams, polyols blend and reaction system useful therefor |
Sep. 9, 2003 |
| 6593387 |
Process for making high resilience foams |
Jul. 15, 2003 |
| 6552097 |
Prepolymer compositions for insulating foams |
Apr. 22, 2003 |
| 6545063 |
Hydrofluorocarbon blown foam and method for preparation thereof |
Apr. 8, 2003 |
| 6417241 |
Process for preparing a flexible polyurethane foam |
Jul. 9, 2002 |
| 6414045 |
One-component polyurethane compositions with improved curing |
Jul. 2, 2002 |
| 6372810 |
Mechanically frothed and chemically blown polyurethane foam |
Apr. 16, 2002 |
| 6303667 |
Foaming agents containing liquid carbon dioxide |
Oct. 16, 2001 |
| 6271276 |
Polyurethane foams prepared from mechanically frothed polyurethane dispersions |
Aug. 7, 2001 |
| 6271275 |
Method and apparatus for producing polyurethane foam |
Aug. 7, 2001 |
| 6268046 |
Process for producing extruded foam products having polystyrene blends with high levels of CO2 as a blowing agent |
Jul. 31, 2001 |
| 6248469 |
Composite solid polymer electrolyte membranes |
Jun. 19, 2001 |
| 6241220 |
Apparatus and process for producing polymeric foam |
Jun. 5, 2001 |
| 6136875 |
High productivity, low fugitive emission foams and foam processes |
Oct. 24, 2000 |
| 6127442 |
Process for foam production using dissolved under pressure carbon dioxide |
Oct. 3, 2000 |
| 6107358 |
Water-absorbent resin and method for production thereof |
Aug. 22, 2000 |
| 6100309 |
Process for preparing elastic polyurethane slabstock foams |
Aug. 8, 2000 |
| 6048909 |
Foams having increased heat distortion temperature made from blends of alkenyl aromatic polymers and alpha-olefin/vinyl or vinylidene aromatic and/or sterically hindered aliphatic or cycloalip |
Apr. 11, 2000 |
| 6043292 |
Process for making flexible polyurethane foams |
Mar. 28, 2000 |
| 6022903 |
Permanent gas blown microcellular polyurethane elastomers |
Feb. 8, 2000 |
| 6013691 |
Expansible sealant compositions and blowing agents |
Jan. 11, 2000 |
| 5939463 |
High productivity, low fugitive VOC emission foam process |
Aug. 17, 1999 |
| 5883143 |
Method and device for the production of foam using carbon dioxide dissolved under pressure |
Mar. 16, 1999 |
| 5859081 |
Process for producing froth polyurethane foam |
Jan. 12, 1999 |
| 5856370 |
Cross-linked synthetic polymers having a porous structure, a high absorption rate for water, aqueous solutions and body fluids, a process for their production and their use in the absorption a |
Jan. 5, 1999 |
| 5801209 |
EPDM compositions and process for producing same |
Sep. 1, 1998 |
| 5789457 |
Method and device for the production of foam using carbon dioxide dissolved under pressure |
Aug. 4, 1998 |
| 5739221 |
Suspension-polymerization process for producing expandable styrene resin beads |
Apr. 14, 1998 |
| 5721285 |
Thermal insulating foamed material and method of manufacturing the same |
Feb. 24, 1998 |
| 5700845 |
Carbon black containing EPDM compositions and process for producing same |
Dec. 23, 1997 |
| 5698601 |
Process for the production of open-celled rigid polyurethane foams useful as insulating materials |
Dec. 16, 1997 |
| 5656344 |
Electroconductive polyurethane foam |
Aug. 12, 1997 |
| 5604267 |
Process for producing froth polyurethane foam |
Feb. 18, 1997 |
| 5585412 |
Process for preparing flexible CFC-free polyurethane foams using an encapsulated blowing agent |
Dec. 17, 1996 |
| 5574074 |
Foamable organic polymer composition and production of foamed article |
Nov. 12, 1996 |
| 5567741 |
Aerated anaerobic compositions with enhanced bulk stability |
Oct. 22, 1996 |
| 5530032 |
Method for the production of integral skin foam |
Jun. 25, 1996 |
| 5496868 |
Sealing material and method |
Mar. 5, 1996 |
| 5403088 |
Apparatus and method for the dispersion of minute bubbles in liquid materials for the production of polymer foams |
Apr. 4, 1995 |
| 5401785 |
Foamed polyurethane-forming composition, foamed polyurethane and process making the same |
Mar. 28, 1995 |
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