US2884408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of polyepoxides and polycarboxylic acid anhydrides
Assignee: Union Carbide Corp
•
Filing: 1956-06-01
•
Granted: 1959-04-28
•
Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Paul S Starcher
- 👤 Jr Charles W Mcgary
- 👤 Jr Charles T Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:59
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A CURABLE COMPOSITION COMPRISING A POLYEPOXIDE COMPOUND CHARACTERIZED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
A CURABLE COMPOSITION COMPRISING A POLYEPOXIDE COMPOUND CHARACTERIZED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
US2527806A
Cited
US2607761A
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US2712535A
Cited
US2623023A
Cited
US2764575A
Cited
US2720500A
Cited
US2745847A
Cited
US2768153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |