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Class Information
Number: 521/911
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Surfactant for other than polyurethane cellular product
Description: Subject matter involving specified surfactants utilized in preparing nonpolyurethane cellular products.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6417315 |
Preparation of conductive polyurethanes using a conductive quasi-solution |
Jul. 9, 2002 |
| 6184331 |
Preparation of conductive polyurethanes using a conductive quasi-solution |
Feb. 6, 2001 |
| 6111051 |
Preparation of conductive polyurethanes using a conductive quasi-solution |
Aug. 29, 2000 |
| 5968643 |
Microporous film with improved properties |
Oct. 19, 1999 |
| 5898057 |
Preparation of conductive polyurethanes using a conductive quasi-solution |
Apr. 27, 1999 |
| 5639847 |
Preparation of conductive polyurethanes using a conductive quasi-solution |
Jun. 17, 1997 |
| 5439948 |
Process for cellular polymeric products |
Aug. 8, 1995 |
| 4563499 |
Extraction of polyoxyalkylene surfactants for phenolic foam stabilization |
Jan. 7, 1986 |
| 4555442 |
Polyoxyalkylene/unsaturated diester reaction product for cellular foam stabilization |
Nov. 26, 1985 |
| 4520140 |
Polyoxyalkylene/unsaturated diester reaction product for cellular foam stabilization |
May. 28, 1985 |
| 4518719 |
Metal catalyzed preparation of polyoxyalkylene surfactants for phenolic foam stabilization |
May. 21, 1985 |
| 4490489 |
Metal catalyzed preparation of polyoxyalkylene surfactants for phenolic foam stabilization |
Dec. 25, 1984 |
| 4481307 |
Polyoxyalkylene/unsaturated diester reaction product for cellular foam stabilization |
Nov. 6, 1984 |
| 4438018 |
Metal catalyzed preparation of polyoxyalkylene surfactants for phenolic foam stabilization |
Mar. 20, 1984 |
| 4259402 |
Bonding with foamed hot melt adhesives |
Mar. 31, 1981 |
| 4174427 |
Method of making expandable polystyrene beads |
Nov. 13, 1979 |
| 4156754 |
Method of making foamed thermoplastic adhesive materials and adhesive process therefor |
May. 29, 1979 |
| 4153763 |
Process for producing expandable beads of vinyl aromatic polymer resins |
May. 8, 1979 |
| 4070313 |
Non punking phenolic foam |
Jan. 24, 1978 |
| 4069175 |
Method for producing dimensionally stable urea-formaldehyde foams |
Jan. 17, 1978 |
| 4067829 |
Preparation of a cured resole resin |
Jan. 10, 1978 |
| 4065411 |
Process for the preparation of expandable styrene polymer particles |
Dec. 27, 1977 |
| 4049594 |
Process for preparing expandable styrene polymer particles |
Sep. 20, 1977 |
| 3931063 |
Process for the manufacture of porous solids consisting of crosslinked urea-formaldehyde polycondensation products |
Jan. 6, 1976 |
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