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Patent US3297672A successfully refreshed from Google Patents.
US3297672A
Expired / Lapsed
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Polymerization of allyl cyclohexane with a friedel-crafts catalyst
Assignee: WR Grace and Co
•
Filing: 1963-08-09
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Granted: 1967-01-10
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Expires: 1983-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ketley Arthur Donald
- 👤 Raymond J Ehrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:41
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A SOLID GLASSY TYPE POLYMER HAVING PREDOMINANTLY THE FOLLOWING RECURRING STRUCTURAL UNIT
Claim 2
Dependent Claim
12 words
A SOLID GLASSY TYPE POLYMER HAVING PREDOMINANTLY THE FOLLOWING RECURRING STRUCTURAL UNIT
Claim 3
Dependent Claim
11 words
A POLYMERIZATION PROCESS WHICH COMPRISES SUBJECTING AN OLEFIN OF THE FORMULA:
Claim 4
Dependent Claim
11 words
A POLYMERIZATION PROCESS WHICH COMPRISES SUBJECTING AN OLEFIN OF THE FORMULA:
References Cited (Backward Citations)
US2931791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |