US3595833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold curing epoxy resin composition
Assignee: Shell USA Inc
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Filing: 1968-11-04
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Granted: 1971-07-27
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Expires: 1988-11-04
Abstract
Abstract NOVEL CURING COMPOSITIONS USEFUL IN CURING EPOXY RESINS AT LOW TEMPERATURES AND HAVING IMPROVED STORAGE STABILITY ARE PROVIDED COMPRISING A MIXTURE OF (1) AN AROMATIC POLYAMINE, (2) A POLYALKENE SULFONE, (3) A COMPONENT FROM THE GROUP CONSISTING OF DIALKYL SULFOXIDES, CYCLOHEXANONE OR ALKYL SUBSTITUTED CYCLOHEXANONES, AND (4) SALICYCLIC ACID AND/OR LACTIC ACID.
Inventors
- 👤 Ralph E Stolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |