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Patent US2938014A successfully refreshed from Google Patents.
US2938014A
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Resin compositions
Assignee: Pfizer Inc
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Filing: 1957-10-04
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Granted: 1960-05-24
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Bavley Abraham
- 👤 Charles J Knuth
- 👤 Francis W Michelotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:35
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE THERMOSETTING RESIN COMPOSITION WHICH COMPRISES THE HEAT REACTION PRODUCT (1) A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND, SAID POLYHYDRIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND POLYHYDRIC PHENOLS AND (2) FROM ABOUT 0.8 TO ABOUT 1.2 EQUIVALENTS OF METHYLSUCCINIC ANHYDRIDE PER EQUIVALENT OF EPOXY GROUP IN SAID EPOXY RESIN.
Claim 2
Dependent Claim
54 words
THE THERMOSETTING RESIN COMPOSITION WHICH COMPRISES THE HEAT REACTION PRODUCT (1) A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND, SAID POLYHYDRIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND POLYHYDRIC PHENOLS AND (2) FROM ABOUT 0.8 TO ABOUT 1.2 EQUIVALENTS OF METHYLSUCCINIC ANHYDRIDE PER EQUIVALENT OF EPOXY GROUP IN SAID EPOXY RESIN.
References Cited (Backward Citations)
US2773897A
Cited
US2768153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |