US3531528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5,6 - diphenyl - 4a - lower - alkyl - 4,4a,7,8-tetrahydro - 2(3h) - naphthalenones and process
Assignee: Pharmacia and Upjohn Co
•
Filing: 1968-07-01
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Granted: 1970-09-29
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Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Daniel Lednicer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/657; C07C49/683; C07C45/00; C07C45/51; C07C45/516; C07C45/56; C07C45/562; C07C49/687; C07C49/697
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3164607A
Cited
US3293263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |