Patent US3562887A successfully refreshed from Google Patents.
US2801232A
Expired / Lapsed
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Diepoxy resinous compositions
Assignee: Wyeth Holdings LLC
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Filing: 1953-10-01
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Granted: 1957-07-30
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Suen Tzeng Jiueq
- 👤 Hicks George Hewlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A COMPOSITION OF MATTER WHICH COMPRISES THE HEATHARDENABLE REACTION MIXTURE OF A DICARBOXYLIC ANYLDRIDE AND THE REACTION PRODUCT OF A DILYCIDLY ESTER OF A DICARBOXYLIC ACID AND A SATURATED DIFUNCTIONAL COMPOUND CONTAINING FROM 4 TO 12 CARBON ATOMS OF THE GROUP CONSISTING OF ALPHA, OMEGA-DICARBOXYLIC ACIDS AND ALPHA, OMEGA-DIHYDRIC ALCOHOLS; WHEREIN THE MOLAR RATIO OF SAID ESTER TO SAID DIFUNCTIONAL COMPOUND IS IN EXCESS OF 1:2, THE MOLAR RATIO OF SAID ANHYDRIDE TO SAID DIFUNCTIONAL COMPOUND IS FROM 1:10 TO 10:1 AND THE TOTAL AMOUNT OF SAID DIFUNCTIONAL COMPOUND AND SAID ANHYDRIDE IS BETWEEN 1:3 AND 3:1 MOLS PER MOL OF SAID ESTER.
Claim 2
Dependent Claim
103 words
A COMPOSITION OF MATTER WHICH COMPRISES THE HEATHARDENABLE REACTION MIXTURE OF A DICARBOXYLIC ANYLDRIDE AND THE REACTION PRODUCT OF A DILYCIDLY ESTER OF A DICARBOXYLIC ACID AND A SATURATED DIFUNCTIONAL COMPOUND CONTAINING FROM 4 TO 12 CARBON ATOMS OF THE GROUP CONSISTING OF ALPHA, OMEGA-DICARBOXYLIC ACIDS AND ALPHA, OMEGA-DIHYDRIC ALCOHOLS; WHEREIN THE MOLAR RATIO OF SAID ESTER TO SAID DIFUNCTIONAL COMPOUND IS IN EXCESS OF 1:2, THE MOLAR RATIO OF SAID ANHYDRIDE TO SAID DIFUNCTIONAL COMPOUND IS FROM 1:10 TO 10:1 AND THE TOTAL AMOUNT OF SAID DIFUNCTIONAL COMPOUND AND SAID ANHYDRIDE IS BETWEEN 1:3 AND 3:1 MOLS PER MOL OF SAID ESTER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |