Patent US3262992A successfully refreshed from Google Patents.
US3262992A
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Composition of matter comprising polypropylene and an ethylene-propylene copolymer
Assignee: Hercules LLC
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Filing: 1961-01-17
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Granted: 1966-07-26
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Holzer Richard
- 👤 Mehnert Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:39
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08F; C08F297/00; C08F297/06; C08F297/08; C08F297/083; C08L23/12; C08L53/00; C08L53/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
COMPOSITION OF MATTER CONTAINING HIGHLY CRYSTALLINE AND HIIGH MOLECULAR POLYPROPYLENE HAVING A REDUCED SPECIFIC VISCOSITY OF 2 TO 15, MEASURED OF 135*C. IN A 0.1% SOLUTION IN DECAHYDRONAPHTHALENE, AND A HETEROBLOCK COPOLYMER OF POLYPROPYLENE AND POLYETHYLENE SEGMENTS, THE SAID COPOLYMER CONTAINING MORE THAN 50% BY WEIGHT PROPYLENE AND THE TOTAL COMPOSITION CONTAINING 5-70% BY WEIGHT OF SAID HETEROBLOCK COPOLYMER.
Claim 2
Dependent Claim
59 words
COMPOSITION OF MATTER CONTAINING HIGHLY CRYSTALLINE AND HIIGH MOLECULAR POLYPROPYLENE HAVING A REDUCED SPECIFIC VISCOSITY OF 2 TO 15, MEASURED OF 135*C. IN A 0.1% SOLUTION IN DECAHYDRONAPHTHALENE, AND A HETEROBLOCK COPOLYMER OF POLYPROPYLENE AND POLYETHYLENE SEGMENTS, THE SAID COPOLYMER CONTAINING MORE THAN 50% BY WEIGHT PROPYLENE AND THE TOTAL COMPOSITION CONTAINING 5-70% BY WEIGHT OF SAID HETEROBLOCK COPOLYMER.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |