Patent US2831241A successfully refreshed from Google Patents.
US3755502A
Expired / Lapsed
US
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Blends of polyolefins with isobutene dipentene copolymer and films therefrom
Assignee: Mobil Oil AS
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Filing: 1971-02-19
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Granted: 1973-08-28
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Expires: 1991-02-19
Abstract
Abstract A NORMALLY SOLID RESINOUS BLEND COMPOSITION, ADAPTABLE FOR FABRICATION INTO ORIENTED FILM STRUCTURES HAVING IMPROVED PHYSICAL PROPERTIES, COMPRISING A THERMOPLASTIC RESIN INCLUDING POLYOLEFINS SUCH AS POLYPROPYLENE AND BLENDS OF POLYPROPYLENE WITH OTHER POLYOLEFINIC MATERIALS INCLUDING COPOLYMERS, HAVING INCORPORATION THEREIN ADDITIVE AMOUNTS, ON THE ORDER OF FROM ABOUT 5% TO ABOUT 40% BY WEIGHT OF A COPOLYMER OF DIPENTENE AND ISOBUTENE.
Inventors
- 👤 E Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:34
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/18; C08L23/20
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |