US3091601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefinic copolymers
Assignee: Union Carbide Corp
•
Filing: 1957-09-20
•
Granted: 1963-05-28
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Reding
- 👤 Jr Charles W Mcgary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:25
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD FOR PRODUCING A SOLID COCRYSTALLINE COPOLYMER OF STYRENE, ORTHO-CHLOROSTYRENE, META-CHLOROSTYRENE AND PARA-CHLOROSTYRENE HAVING A HIGH DEGREE OF CRYSTALLINITY OVER THE ENTIRE COMPOSITION RANGE AS DETERMINED BY ITS X-RAY DIFFRACTION PATTERN WHICH COMPRISES ADMIXING STYRENE WITH A MIXTURE OF ORTHOCHLOROSTYRENE, META-CHLOROSTYRENE AND PARA-CHLOROSTYRENE, TOGETHER WITH A CATALYST CONSISTING ESSENTIALLY OF A HALIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF GROUP IV-B, GROUP V-B AND GROUP VI-B OF THE PERIODIC TABLE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
26 words
A SOLID COCRYSTALLINE COPOLYMER OF 3-METHYL-1-BUTENE AND 4-METHYL-1-PENTENE HAVING A HIGH DEGREE OF CRYSTALLINITY OVR THE ENTIRE COMPOSITION RANGE AS DETERMINED BY ITS X-RAY DIFFRACTION PATTERN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |