US2830966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester resin composition containing indan carboxylic acids and process of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1955-02-11
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Granted: 1958-04-15
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 John C Petropoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:16
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR PREPARIG AN UNSATURATED POLYESTER RESIN COMPOSITION COMPRISING HEAT REACTING AN UNSATURATED POLYESTER RESIN WITH A POLYMERIZABLE COMPOUND CONTAINING A CH2=C< GROUP, WHEREIN SAID POLYESTER RESIN IS THE REACTION PRODUCT OF A POLYHYDRIC ALCOHOL, AN ALPHA, BETA ETHYLENCIALLY UNSATURATED POLYCARBOXYLIC ACID AND AN ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
49 words
A PROCESS FOR PREPARIG AN UNSATURATED POLYESTER RESIN COMPOSITION COMPRISING HEAT REACTING AN UNSATURATED POLYESTER RESIN WITH A POLYMERIZABLE COMPOUND CONTAINING A CH2=C< GROUP, WHEREIN SAID POLYESTER RESIN IS THE REACTION PRODUCT OF A POLYHYDRIC ALCOHOL, AN ALPHA, BETA ETHYLENCIALLY UNSATURATED POLYCARBOXYLIC ACID AND AN ACID HAVING THE FORMULA:
References Cited (Backward Citations)
US2255313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |