US2911384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygenated crystalline polypropylene, method of making, and wax composition containing same
Assignee: Sunoco Inc
•
Filing: 1957-02-05
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Granted: 1959-11-03
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Expires: 1977-02-05
Abstract
No abstract record available.
Inventors
- 👤 William E Thompson
- 👤 George S Leeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:16
CPC Classifications
C; C08; C08L; C08L91/00; C08L91/06; C08L91/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A NEW COMPOSITION OF MATTER COMPRISING CRYSTALLINE POLYPROPYLENE CHEMICALLY COMBINED WITH FROM 0.2%-4% BY WEIGHT OXYGEN, SAID COMPOSITION HAVING BEEN PREPARED BY CONTACTING CRYSTALLINE POLYPROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 50,000 TO 300,00 AT A TEMPERATURE OF FROM ITS MELTING POINT TO ABOUT 464*F. WITH AN ATMOSPHERE CONTAINING FROM ABOUT 2% TO ABOUT 40% OF MOLECULAR OXYGEN.
Claim 2
Dependent Claim
60 words
A NEW COMPOSITION OF MATTER COMPRISING CRYSTALLINE POLYPROPYLENE CHEMICALLY COMBINED WITH FROM 0.2%-4% BY WEIGHT OXYGEN, SAID COMPOSITION HAVING BEEN PREPARED BY CONTACTING CRYSTALLINE POLYPROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 50,000 TO 300,00 AT A TEMPERATURE OF FROM ITS MELTING POINT TO ABOUT 464*F. WITH AN ATMOSPHERE CONTAINING FROM ABOUT 2% TO ABOUT 40% OF MOLECULAR OXYGEN.
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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |