Patent US3247173A successfully refreshed from Google Patents.
US3247173A
Expired / Lapsed
US
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Catalytic polymerization of alpha-olefins with mixtures of a titanium compound and apolymeric organometallic reaction product
Assignee: Eastman Kodak Co
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Filing: 1961-12-07
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Granted: 1966-04-19
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Expires: 1981-12-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Newton H Shearer
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:27
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN THE POLYMERIZATION OF AT LEAST ONE A-MONOOLEFINIC HYDROCARBON TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISIES EFFECTING THE POLYMERIZATION IN THE PRESENCE OF A MIXTURE OF (1) A NONDISTILLABLE POLYMERIC SOLID RESULTING FROM REACTION OF METHYLENE HALIDE WITH A METAL FROM THE GROUP CONSISTING OF ALUMINUM, ZINC AND MAGNESIUM, AND (2) A COMPOUND OF THE TRANSITION METAL TITANIUM.
Claim 2
Dependent Claim
59 words
IN THE POLYMERIZATION OF AT LEAST ONE A-MONOOLEFINIC HYDROCARBON TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISIES EFFECTING THE POLYMERIZATION IN THE PRESENCE OF A MIXTURE OF (1) A NONDISTILLABLE POLYMERIC SOLID RESULTING FROM REACTION OF METHYLENE HALIDE WITH A METAL FROM THE GROUP CONSISTING OF ALUMINUM, ZINC AND MAGNESIUM, AND (2) A COMPOUND OF THE TRANSITION METAL TITANIUM.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |