US3418386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of cyclooctadienes to cyclooctenes
Assignee: Columbian Carbon Co
•
Filing: 1966-07-05
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Granted: 1968-12-24
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 William K Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:58
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44; C07C2601/00; C07C2601/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2360555A
Cited
US3108142A
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US3022359A
Cited
GB932226A
Cited
US3251892A
Cited
US3336404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |