US2984643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable composition comprising a vinyl monomer and an unsaturated polyester containing benzyl ether groups
Assignee: Bayer AG
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Filing: 1957-01-23
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Granted: 1961-05-16
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Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 Gunther Nischk
- 👤 Otto Bayer
- 👤 Hans Holtschmidt
- 👤 Heinrich Meckbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08G18/683
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) 20-70 PARTS BY WEIGHT OF STYRENE, AND (2) 30-80 PARTS BY WEIGHT OF AN ETHYLENICALLY UNSATURATED POLYESTER PREPARED BY THE ESTERIFICATION OF (A) AN ETHYLENIC-ALPHA,BETA-DICARBOXYLIC ACID WITH (B) PENTAERYTHRITO DIBENZYL ETHER OF THE FORMULA
Claim 2
Dependent Claim
39 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) 20-70 PARTS BY WEIGHT OF STYRENE, AND (2) 30-80 PARTS BY WEIGHT OF AN ETHYLENICALLY UNSATURATED POLYESTER PREPARED BY THE ESTERIFICATION OF (A) AN ETHYLENIC-ALPHA,BETA-DICARBOXYLIC ACID WITH (B) PENTAERYTHRITO DIBENZYL ETHER OF THE FORMULA
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |