Patent US2918444A successfully refreshed from Google Patents.
US2918444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyepoxide compositions
Assignee: Union Carbide Corp
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Filing: 1957-08-08
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Granted: 1959-12-22
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Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Jr Charles W Mcgary
- 👤 Jr Charles T Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:40
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CURABLE COMPOSITION COMPRISING (A) DIVINYLBENZENE DIOXIDE: (B) A PLYCARBOXYLIC ACID ANYHDRIDE IN AN AMOUNT HAVING X CARBOXYL EQUIVALENTS PER EPOXY EQUIVALENT OF DIEPOXIDE; AND (C) A POLYCARBOXYLIC ACID IN AN AMOUNT HAVING Y CARBOXYL EQUIVALENTS PER EPOXY EQUIVALENT OF DIEPOXIDE; WHEREIN X IS A NUMBER IN THE RANGE FROM ABOUT 0.2 TO 3.0; Y IS A NUMBER IN THE RANGE FROM 0.0 TO 1.0; THE SUM OF X PLUS Y IS NOT GREATER THAN 3.0; AND X/Y IS AT LEAST 1.0 WHEN Y IS GREATER THAN 0.0.
Claim 2
Dependent Claim
88 words
A CURABLE COMPOSITION COMPRISING (A) DIVINYLBENZENE DIOXIDE: (B) A PLYCARBOXYLIC ACID ANYHDRIDE IN AN AMOUNT HAVING X CARBOXYL EQUIVALENTS PER EPOXY EQUIVALENT OF DIEPOXIDE; AND (C) A POLYCARBOXYLIC ACID IN AN AMOUNT HAVING Y CARBOXYL EQUIVALENTS PER EPOXY EQUIVALENT OF DIEPOXIDE; WHEREIN X IS A NUMBER IN THE RANGE FROM ABOUT 0.2 TO 3.0; Y IS A NUMBER IN THE RANGE FROM 0.0 TO 1.0; THE SUM OF X PLUS Y IS NOT GREATER THAN 3.0; AND X/Y IS AT LEAST 1.0 WHEN Y IS GREATER THAN 0.0.
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |