Class Information
Number: 521/151
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 polymer derived from tar, pitch, bitumen, asphalt, or plant material of unknown constitution, e.g., nut shell liquor, etc.
Description: Subject matter involving a cellular polymer derived from at least one reactant which is identified as a tar, pitch, bitumen, asphalt, or as a plant material of substantially undefined chemical identity or process of preparing; compositions containing a polymer derived from a reactant identified as a tar, pitch, bitumen, asphalt, or as a plant material of substantially undefined chemical identity or contain a polymerizable reactant identified as tar, pitch, bitumen, asphalt, or plant material of substantially undefined chemical constitution and which composition is capable of preparing a cellular product or process of preparing same. Processes of treating a cellular polymer derived from at least one reactant which is identified as a tar, bitumen, asphalt, or as a plant material of substantially undefined chemical identity with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein or neither forms a desired composition with the cellular polymer or products of such a treatment; processes of treating a cellular polymer derived from at least one reactant which is identified as a tar, pitch, bitumen, asphalt, or as a plant material of substantially undefined chemical constituent without the addition of a material thereto whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6881763 |
Plastic material |
Apr. 19, 2005 |
| 6867239 |
Plastic material |
Mar. 15, 2005 |
| 6864296 |
Plastic material |
Mar. 8, 2005 |
| 6855744 |
Gelcasting polymeric precursors for producing net-shaped graphites |
Feb. 15, 2005 |
| 6649667 |
Polyurethane foams having improved heat sag and a process for their production |
Nov. 18, 2003 |
| 6465569 |
Plastic material |
Oct. 15, 2002 |
| 6211315 |
Lewis acid-catalyzed polymerization of biological oils and resulting polymeric materials |
Apr. 3, 2001 |
| 6180686 |
Cellular plastic material |
Jan. 30, 2001 |
| 5710190 |
Soy protein-based thermoplastic composition for foamed articles |
Jan. 20, 1998 |
| 5405882 |
Method of foaming asphalt and products produced thereby |
Apr. 11, 1995 |
| 4600728 |
Elastomer compositions containing humates |
Jul. 15, 1986 |
| 4532260 |
Elastomer compositions containing humates |
Jul. 30, 1985 |
| 4382136 |
Process for the production of polyhydroxy lignin-cellulose silicate polymer |
May. 3, 1983 |
| 4380592 |
Process for the production of polyhydroxy lignin-cellulose silicate polymer |
Apr. 19, 1983 |
| 4377674 |
Process for the production of polyhydroxy lignin-cellulose silicate polymer |
Mar. 22, 1983 |
| 4376173 |
Process for the production of polyepoxy silicate resins |
Mar. 8, 1983 |
| 4359548 |
Process for the production of polyester resins |
Nov. 16, 1982 |
| 4256198 |
Acoustic apparatus |
Mar. 17, 1981 |
| 4185146 |
Polyurethane binder composition containing a rubber extender oil and a finely divided solid soybean derivative |
Jan. 22, 1980 |
| 4086195 |
Bitumen filled polyester foams |
Apr. 25, 1978 |
| 4032483 |
Manufacture of polyurethanes from bark |
Jun. 28, 1977 |
|
