US3381017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbinols employing cyclopentadienyl or lower alkyl substituted cyclopentadienyl grignard reagents and hydrogenation
Assignee: Roche Palo Alto LLC
•
Filing: 1965-06-04
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Granted: 1968-04-30
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Waugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07C; C07C33/00; C07C33/34; C07C33/38; C07C33/40; C07C33/50; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931; Y10S585/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2662891A
Cited
US2921940A
Cited
US2832786A
Cited
US2995492A
Cited
US2993900A
Cited
GB897251A
Cited
US3222399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |