US3243468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing cycloolefins
Assignee: Columbian Carbon Co
•
Filing: 1962-06-14
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Granted: 1966-03-29
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Reginald F Clark
- 👤 Charles D Storrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:50
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/04; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
A METHOD OF POLYMERIZING UNSATURATED MONOMERS WHICH COMPRISES SUBJECTING SAID MONOMER TO THE INFLUENCE OF A NICKEL COMPLEX REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2212112A
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US2373811A
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US2461961A
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US2686208A
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US2686209A
Cited
US2943117A
Cited
US3076016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |