US3214399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene stabilized with nickel acetylacetonate, a hindered phenol and calcium stearate
Assignee: Montedison SpA
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Filing: 1961-09-19
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Granted: 1965-10-26
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Saccomandi Pietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A POLYMERIC COMPOSITION STABLIZED AGAINST THE ACTION OF LIGHT AND DISCOLORATION ABOVE 240*C. CONSISTING ESSENTIALLY OF A CRYSTALLINE POLYPROPYLENE, A PHENOLIC ANTIOXIDANT, AND AN INORGANIC SALT OF STEARIC ACID, NICKEL ACETYLACETONATE IN PROPORTIONS OF FROM ABOUT 0.05 TO 2% BY WEIGHT OF SAID POLYPROPYLENE, A HINDERED PHENOLIC ANTIOXIDANT IN PROPORTIONS OF FROM ABOUT 0.1% TO 2% BY WEIGHT OF SAID POLYPROPYLENE AND CALCIUM STEARATE.
Claim 2
Dependent Claim
64 words
A POLYMERIC COMPOSITION STABLIZED AGAINST THE ACTION OF LIGHT AND DISCOLORATION ABOVE 240*C. CONSISTING ESSENTIALLY OF A CRYSTALLINE POLYPROPYLENE, A PHENOLIC ANTIOXIDANT, AND AN INORGANIC SALT OF STEARIC ACID, NICKEL ACETYLACETONATE IN PROPORTIONS OF FROM ABOUT 0.05 TO 2% BY WEIGHT OF SAID POLYPROPYLENE, A HINDERED PHENOLIC ANTIOXIDANT IN PROPORTIONS OF FROM ABOUT 0.1% TO 2% BY WEIGHT OF SAID POLYPROPYLENE AND CALCIUM STEARATE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |