Patent US3354239A successfully refreshed from Google Patents.
US3354239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin blend
Assignee: Shell USA Inc
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Filing: 1967-02-08
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Granted: 1967-11-21
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Glen A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:17
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L53/00; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A COMPOSITION WHICH CONSISTS ESSENTIALLY OF 1 PART BY WEIGHT OF ISOTACTIC POLYPROPYLENE HAVING BLENDED THEREWITH FROM 0.1 TO 10 PARTS BY WEIGHT OF A MODIFIED POLYPROPYLENE PRODUCT CONSISTING TO THE EXTEND OF AT LEAST ABOUT 50% BY WEIGHT OF ISOTACTIC POLYPROPYLENE POLYMER CHAINS, HAVING ETHYLENE-PROPYLENE COPOLYMER ATTACHED TO ONE END OF AT LEAST A PORTION OF SAID POLYPROPYLENE CHAINS, THE TOTAL AMOUNT PRODUCT BEING IN THE RANGE FROM 2 TO 25% BY WEIGHT AND THE TOTAL AMOUNT OF ETHYLENE UNITS IN SAID COMPOSITION BEING IN THE RANGE FROM 1 TO 22% BY WEIGHT.
Claim 2
Dependent Claim
94 words
A COMPOSITION WHICH CONSISTS ESSENTIALLY OF 1 PART BY WEIGHT OF ISOTACTIC POLYPROPYLENE HAVING BLENDED THEREWITH FROM 0.1 TO 10 PARTS BY WEIGHT OF A MODIFIED POLYPROPYLENE PRODUCT CONSISTING TO THE EXTEND OF AT LEAST ABOUT 50% BY WEIGHT OF ISOTACTIC POLYPROPYLENE POLYMER CHAINS, HAVING ETHYLENE-PROPYLENE COPOLYMER ATTACHED TO ONE END OF AT LEAST A PORTION OF SAID POLYPROPYLENE CHAINS, THE TOTAL AMOUNT PRODUCT BEING IN THE RANGE FROM 2 TO 25% BY WEIGHT AND THE TOTAL AMOUNT OF ETHYLENE UNITS IN SAID COMPOSITION BEING IN THE RANGE FROM 1 TO 22% BY WEIGHT.
References Cited (Backward Citations)
BE599410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |