US3356645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing epoxy resins with a salt of an imidazole and compositions thereof
Assignee: Shell USA Inc
•
Filing: 1964-04-20
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Granted: 1967-12-05
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Warren Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR CURING POLYEPOXIDES WHICH COMPRISES MIXING AND REACTING A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP WITH A CURING AMOUNT OF A SALT OF AN IMIDAZOLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
35 words
A PROCESS FOR CURING POLYEPOXIDES WHICH COMPRISES MIXING AND REACTING A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP WITH A CURING AMOUNT OF A SALT OF AN IMIDAZOLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2681901A
Cited
US3030376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |