US3645963A
Expired / Lapsed
US
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Polymers stabilized with polymethylene sulfide
Assignee: Stauffer Chemical Co
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Filing: 1970-01-19
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Granted: 1972-02-29
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Expires: 1990-01-19
Abstract
Abstract A SOLID POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF A SOLID POLYMER SELECTED FROM THE CLASS CONSISTING OF A HYDROCARBON POLYMER, A SUBSTITUTED HYDROCARBON POLYMER, A POLYESTER, A VINYL POLYMER AND COPOLYMERS AND TERPOLYMERS THEREOF, STABILIZED AGAINST ULTRAVIOLET RAYS BY INCORPORATING THEREIN A STABILIZING QUANTITY OF A POLYALKYLENE SULFIDE.
Inventors
- 👤 Adam F Kopacki
- 👤 Nathaniel L Remes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:19
CPC Classifications
C; C08; C08L; C08L57/00; C08K; C08K5/00; C08K5/04; C08K5/14; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L67/00; C08L2312/00; C08L81/00; C08L81/02
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |