US2947721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-alpha-olefin compositions containing 4-alkoxy-2-hydroxybenzo-phenones and n, n'-diphenyl-p-phenylenediamine
Assignee: Eastman Kodak Co
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Filing: 1958-11-28
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Granted: 1960-08-02
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Newland
- 👤 John W Tamblyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; A61K8/40; A61K8/41; A61K8/411; A61Q; A61Q17/00; A61Q17/04; C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A SOLID POLY-A-OLEFIN COMPOSITION SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE COMPOSITIONS CONTAINING .001% TO 10% BY WEIGHT OF A STABILIZER COMBINATION COMPRISING N,N''-DIPHENYL-P-PHENYLENEDIAMINE AND A 4 - ALKOXY - 2 - HYDROXYBENZOPHENONE WHEREIN THE ALKOXY MOIETY HAS 12 TO 14 CARBON ATOMS, THE WEIGHT RATIO OF SAID N,N'' -DIPHENYL-P-PHENYLENEDIAMINE TO SAID 4-ALKOXY-I-HYDROXYBENZOPHENONE BEING IN THE RANGE OF 1/30 TO 30/1.
Claim 2
Dependent Claim
63 words
A SOLID POLY-A-OLEFIN COMPOSITION SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE COMPOSITIONS CONTAINING .001% TO 10% BY WEIGHT OF A STABILIZER COMBINATION COMPRISING N,N''-DIPHENYL-P-PHENYLENEDIAMINE AND A 4 - ALKOXY - 2 - HYDROXYBENZOPHENONE WHEREIN THE ALKOXY MOIETY HAS 12 TO 14 CARBON ATOMS, THE WEIGHT RATIO OF SAID N,N'' -DIPHENYL-P-PHENYLENEDIAMINE TO SAID 4-ALKOXY-I-HYDROXYBENZOPHENONE BEING IN THE RANGE OF 1/30 TO 30/1.
References Cited (Backward Citations)
US2861053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |