US2777828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of mixtures of unsaturated polyesters and copolymerizable monomers by means of hydroxy substituted benzophenones
Assignee: Wyeth Holdings LLC
•
Filing: 1953-04-03
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Granted: 1957-01-15
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Expires: 1973-04-03
Abstract
No abstract record available.
Inventors
- 👤 Harold M Day
- 👤 Victor E Hasler
- 👤 Warren S Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/673; C07C45/45; C07C45/46; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A LIGHT-STABLE RESINOUS COMPOSITION COMPRISING COPOLYMERIZABLE MIXTURE OF (1) BETWEEN ABOUT 20 AND 80 PARTS BY WEIGHT OF AN UNSATURAATED POLYESTER RESIN, (2) BETWEEN ABOUT 20 AND ABOUT 80 PARTS OF A MONOMERIC COMPOUND CONTAINING A POLYMERIZABLE CH2=C< GROUP, (3) A POLYMERIZATION CATALYST FOR (1) AND (2), AND (4) 0.01%-5%, BASED ON THE TOTAL WEIGHT OF (1) AND (2), OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
66 words
A LIGHT-STABLE RESINOUS COMPOSITION COMPRISING COPOLYMERIZABLE MIXTURE OF (1) BETWEEN ABOUT 20 AND 80 PARTS BY WEIGHT OF AN UNSATURAATED POLYESTER RESIN, (2) BETWEEN ABOUT 20 AND ABOUT 80 PARTS OF A MONOMERIC COMPOUND CONTAINING A POLYMERIZABLE CH2=C< GROUP, (3) A POLYMERIZATION CATALYST FOR (1) AND (2), AND (4) 0.01%-5%, BASED ON THE TOTAL WEIGHT OF (1) AND (2), OF A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
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Cited
US2407479A
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US2419553A
Cited
US2528789A
Cited
US2560028A
Cited
US2538355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |