US3832268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastic structures containing cured polyester resin
Assignee: Rohm and Haas Co
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Filing: 1972-04-17
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Granted: 1974-08-27
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Expires: 1992-04-17
Abstract
Abstract REINFORCED PLASTIC STRUCTURES ARE FORMED FROM THERMOPLASTIC SUBSTRATES HAVING BONDED THERETO A CURED POLYESTER OF A COMPOSITION COMPRISING AN ETHYLENICALLY UNSATURATED CURABLE POLYESTER AND A MONOMER MIXTURE OF A COPOLYMERIZABLE UNSATURATED CARBOXYLIC ACID OR ANHYDRIDE AND A DIFFERENT COPOLYMERIZABLE MONOMER. THE PLASTIC STRUCTURES ARE CHARACTERIZED BY IMPROVED BONDING BETWEEN THE SUBSTRATE AND CURED POLYESTER.
Inventors
- 👤 C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:41
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/36; C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; B32B2327/00; B32B2327/06; B32B2355/00; B32B2355/02; B32B2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31786; Y10T428/31797
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |