US2656345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-aryl-9-oxodehydroabietinols
Assignee: GD Searle LLC
•
Filing: 1951-08-31
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Granted: 1953-10-20
•
Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert P Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:29
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/46; C07C41/00; C07C41/01; C07C41/16; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/164; C07C43/20; C07C43/215; C07C43/23; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE 1,4A - DIMETHYL - 1-ARYLMETHANOL-7-ISOPROPYL - 1,2,3,4,9,10,1A,4A - OCTAHYDROPHENANTHRENES OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
14 words
THE 1,4A - DIMETHYL - 1-ARYLMETHANOL-7-ISOPROPYL - 1,2,3,4,9,10,1A,4A - OCTAHYDROPHENANTHRENES OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |