Patent US2977332A successfully refreshed from Google Patents.
US2977332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapidly hardenable mixtures of epoxy resins and polyamide resins
Assignee: BASF Schweiz AG
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Filing: 1957-09-24
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Granted: 1961-03-28
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Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Zumstein Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:35
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/623; C08L; C08L63/00; C08L77/00; C08L77/06; C08L77/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A HARDNEABLE RESIN COMPOSITION COMPRISING (A) AN EPOXY RESIN CONTAINING 1,2-TERMINAL EPOXY GROUPS, (B) A POLYAMIDE RESIN OBTAINED BY REACTING AN ALIPHATIC POLYAMINE WITH A POLYMERIC UNSATURATED HIGHER FATTY ACID, AND (C) A MANNICH BASE DERIVED FROM A PHENOL AND HAVING AT LEAST ONE TERTIARY AMINO GROUP AND AT LEAST ONE PHENOLIC HYDROXYL GROUP.
Claim 2
Dependent Claim
54 words
A HARDNEABLE RESIN COMPOSITION COMPRISING (A) AN EPOXY RESIN CONTAINING 1,2-TERMINAL EPOXY GROUPS, (B) A POLYAMIDE RESIN OBTAINED BY REACTING AN ALIPHATIC POLYAMINE WITH A POLYMERIC UNSATURATED HIGHER FATTY ACID, AND (C) A MANNICH BASE DERIVED FROM A PHENOL AND HAVING AT LEAST ONE TERTIARY AMINO GROUP AND AT LEAST ONE PHENOLIC HYDROXYL GROUP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |