Patent US1633790A successfully refreshed from Google Patents.
Patent US3200086A successfully refreshed from Google Patents.
US3200086A
Expired / Lapsed
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Ultraviolet light stabilized polymeric materials having a benzophenone chemically incorporated therein
Assignee: Wyeth Holdings LLC
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Filing: 1961-08-21
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Granted: 1965-08-10
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G18/00; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A POLYMERIC MATERIAL SELECTED FORM THE GROUP CONSISTING OF LIGHT-STABILIZED POLYESTER, EPOXY AND POLYURETHANE RESINS CHARACTERIZED BY THE PRESENCE OF PENDANT CHEMICALLY BOUND ESTER MOIESTIES OF THE FORMULA:
Claim 2
Dependent Claim
28 words
A POLYMERIC MATERIAL SELECTED FORM THE GROUP CONSISTING OF LIGHT-STABILIZED POLYESTER, EPOXY AND POLYURETHANE RESINS CHARACTERIZED BY THE PRESENCE OF PENDANT CHEMICALLY BOUND ESTER MOIESTIES OF THE FORMULA:
References Cited (Backward Citations)
US2976259A
Cited
US2983708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |