Patent US3408415A successfully refreshed from Google Patents.
US3408415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrogenation
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1965-09-20
•
Granted: 1968-10-29
•
Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Dovell
- 👤 Greenfield Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2527/00; C07C2527/02; C07C2527/04; C07C2527/043; C07C2527/045; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2402626A
Cited
US2360555A
Cited
US2402493A
Cited
US2497176A
Cited
US2488145A
Cited
US2511453A
Cited
US3150203A
Cited
US3336386A
Cited
US3309307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |