US3433855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propylene-diolefinic hydrocarbon block copolymers and process for preparing same
Assignee: Eastman Kodak Co
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Filing: 1966-11-15
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Granted: 1969-03-18
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Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hugh J Hagemeyer Jr
- 👤 Marvin B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A POLYMER IN WHICH THE POLYMER CHAINS ARE CRYSTALLINE POLYMERIZED PROPLENE BODY SEGMENTS TERINATED BY CRYSTALLINE TAIL SEGMENTS OF POLYMERIZED DI-OLEFINIC HYDROCARBON, SAID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000, A DENSITY OF AT LEAST 0.85, A BRITTLE POINT BELOW 0*C. AND CONTAINING AT LEAST 80 PERCENT, BY WEIGHT, OF POLYMERIZED PROPYLENE.
Claim 2
Dependent Claim
54 words
A POLYMER IN WHICH THE POLYMER CHAINS ARE CRYSTALLINE POLYMERIZED PROPLENE BODY SEGMENTS TERINATED BY CRYSTALLINE TAIL SEGMENTS OF POLYMERIZED DI-OLEFINIC HYDROCARBON, SAID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000, A DENSITY OF AT LEAST 0.85, A BRITTLE POINT BELOW 0*C. AND CONTAINING AT LEAST 80 PERCENT, BY WEIGHT, OF POLYMERIZED PROPYLENE.
References Cited (Backward Citations)
GB839996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |