Patent US3493630A successfully refreshed from Google Patents.
US3493630A
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US
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Epoxy resins cured with phenolic novolacs and imidazoles
Assignee: Union Carbide Corp
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Filing: 1968-04-02
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Granted: 1970-02-03
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Expires: 1988-04-02
Abstract
No abstract record available.
Inventors
- 👤 George A Salensky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:46
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/28; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/5073; C08G59/56; C08G59/68; C08G59/686; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/3467; C08K5/3472; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3200172A
Cited
US3147705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |