Patent US2999843A successfully refreshed from Google Patents.
US2999843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-alpha-olefins stabilized with 2-hydroxy-4-pentadecylbenzophenone
Assignee: EIDP Inc
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Filing: 1959-10-12
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Granted: 1961-09-12
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Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Porck Alfred Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A POLY-ALPHA-OLENFIN COMPOSITION CONTAINING DISPERSED THERIN 0.0005% TO 10% BY WEIGHT OF A 2-HYDROXY-4-PENTADECYLBENZOPHENONE AS AN AGENT TO INHIBIT DETERIORATION OF SAID POLYOLEFIN COMPOSITION BY ULTRAVIOLET LIGHT.
Claim 2
Dependent Claim
27 words
A POLY-ALPHA-OLENFIN COMPOSITION CONTAINING DISPERSED THERIN 0.0005% TO 10% BY WEIGHT OF A 2-HYDROXY-4-PENTADECYLBENZOPHENONE AS AN AGENT TO INHIBIT DETERIORATION OF SAID POLYOLEFIN COMPOSITION BY ULTRAVIOLET LIGHT.
References Cited (Backward Citations)
US2887466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |