US2704283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 4alpha-dimethyl-1-aroyl-7-isopropyl-1, 2, 3, 4, 9, 10, 1alpha, 4alpha-octahydrophenanthrene derivatives
Assignee: GD Searle LLC
•
Filing: 1952-07-23
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Granted: 1955-03-15
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Expires: 1972-07-23
Abstract
No abstract record available.
Inventors
- 👤 Robert P Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:59
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/62; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE 1,4A-DIMTHYL-1-AROYL-7-ISOPROPYL-1,2,4,9,101A,4A-OCTAHYDRO-9-PHENANTHRONES OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
THE 1,4A-DIMTHYL-1-AROYL-7-ISOPROPYL-1,2,4,9,101A,4A-OCTAHYDRO-9-PHENANTHRONES OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2656343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |