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Class Information
Number: 528/933
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Physical treatment of natural rubber or natural rubber containing material or chemical treatment of non-rubber portion thereof, e.g., extraction of rubber from milk weed, etc. > Resin removal or conversion
Description: Subject matter relating to treatments to remove or convert the resin portion of natural rubber as obtained from the plant source.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6001888 |
Activator for the depolymerization of polysiloxanes which are crosslinked, optionally contain fillers and/or are uncrosslinked |
Dec. 14, 1999 |
| 5717050 |
Hypoallergenic natural rubber products from parthenium argentatum (gray) and other non-hevea brasiliensis species |
Feb. 10, 1998 |
| 5580942 |
Hypoallergenic natural rubber products from parthenum argentatum (gray) and other non-hevea brasiliensis species |
Dec. 3, 1996 |
| 4804741 |
Guayule rubber, resin and bagasse recovery and purification processes |
Feb. 14, 1989 |
| 4681929 |
Use of rubber solvent-resin solvent and miscella mixtures for extraction-expression of rubber and resins from guayule shrub |
Jul. 21, 1987 |
| 4623713 |
Solvent fractionation of guayule rubber |
Nov. 18, 1986 |
| 4616075 |
Storage of guayule by densification |
Oct. 7, 1986 |
| 4526959 |
Process for extracting rubber and by-products from guayule and guayule-like shrubs |
Jul. 2, 1985 |
| 4435337 |
Process for extracting rubber and by-products from guayule and guayule-like shrubs |
Mar. 6, 1984 |
| 4136131 |
Extraction of rubber or rubberlike substances from fibrous plant materials |
Jan. 23, 1979 |
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