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Patent US3579478A successfully refreshed from Google Patents.
US3579478A
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US
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Polyolefin stabilization
Assignee: Phillips Petroleum Co
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Filing: 1969-01-06
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Granted: 1971-05-18
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Expires: 1989-01-06
Abstract
Abstract MINOR AMOUNTS OF NICKEL COMPLEXES OF THE TYPE (R2NCH2CH2S)2NI WHEREIN R IS HYDROGEN OR A HYDROCARBON RADICAL, ARE IN CORPORATED INTO SOLID HOMOPOLYMERS OR COPOLYMERS DERIVED FROM OLEFINS HAVING FROM 2 TO 6 CARBON ATOMS PER MOLECULE FOR PROTECTION AGAINST THE DETERIORATING EFFECTS OF ULTRAVIOLET LIGHT.
Inventors
- 👤 Howard E Dunn
- 👤 Ronald D Mathis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 0
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |