Patent US3215759A successfully refreshed from Google Patents.
US3215759A
Expired / Lapsed
US
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Polymeric materials stabilized with alkenoylamino benzophenones
Assignee: Wyeth Holdings LLC
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Filing: 1962-10-16
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Granted: 1965-11-02
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Milionis Jerry Peter
- 👤 Coleman Ralph Arthur
- 👤 Arthen Frank Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:43
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A COPOLYMER OF (A) AN ETHYLENICALLY UNSATURATED MONOMER AND (B) AT LEAST 0.01% BY WEIGHT OF A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
21 words
A COPOLYMER OF (A) AN ETHYLENICALLY UNSATURATED MONOMER AND (B) AT LEAST 0.01% BY WEIGHT OF A COMPOUND 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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |