Patent US3549592A successfully refreshed from Google Patents.
US3549592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing epoxy resins with amidines
Assignee: Texaco Inc
•
Filing: 1968-08-05
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Granted: 1970-12-22
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Expires: 1988-08-05
Abstract
No abstract record available.
Inventors
- 👤 Norman Bell Godfrey
- 👤 Heinz Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/5073; C08G59/504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB929397A
Cited
US3324050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |