US2921929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyepoxide compositions
Assignee: Union Carbide Corp
•
Filing: 1956-12-20
•
Granted: 1960-01-19
•
Expires: 1976-12-20
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
2026-10-26 12:53
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A POLYMERIZABLE COMPOSITION COMPRISING BIS(2,3EPOXYCYCLOPENTYL) ETHER, A POLYCARBOXYLIC ACID ANHYDRIDE IN AN AMOUNT HAVING X CARBOXY EQUIVALENTS FOR EACH EPOXY EQUIVALENT OF SAID COMPOSITION AND A POLYCARBOXYLIC ACID IN AN AMOUNT HAVING Y CARBOXY EQUIVALENT FOR EACH EPOXY EQUIVALENT OF SAID COMPOSITION, WHEREIN X IS A NUMBER FROM 0.3 TO 3.0, Y IS A NUMBER FROM 0.0 TO 1.0, THE SUM OF X AND Y IS NOT GREATER THAN 3.0 AND X/Y IS AT LEAST EQUAL TO ONE.
Claim 2
Dependent Claim
78 words
A POLYMERIZABLE COMPOSITION COMPRISING BIS(2,3EPOXYCYCLOPENTYL) ETHER, A POLYCARBOXYLIC ACID ANHYDRIDE IN AN AMOUNT HAVING X CARBOXY EQUIVALENTS FOR EACH EPOXY EQUIVALENT OF SAID COMPOSITION AND A POLYCARBOXYLIC ACID IN AN AMOUNT HAVING Y CARBOXY EQUIVALENT FOR EACH EPOXY EQUIVALENT OF SAID COMPOSITION, WHEREIN X IS A NUMBER FROM 0.3 TO 3.0, Y IS A NUMBER FROM 0.0 TO 1.0, THE SUM OF X AND Y IS NOT GREATER THAN 3.0 AND X/Y IS AT LEAST EQUAL TO ONE.
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |