US3527762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidine derivatives
Assignee: Allen and Hanburys Ltd
•
Filing: 1966-03-30
•
Granted: 1970-09-08
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 David Jack
- 👤 Alexander Crawford Ritchie
- 👤 Dennis George Cheesman
- 👤 Norman James Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:02
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/10; C07D211/16; C07D211/18; C07D211/36; C07D211/40; C07D211/44; C07D211/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |