US2832805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-arylmethylene-4a-methyl-6-hydroxy-1, 2, 3, 4, 4a, 9, 10, 10a-octahydro-1-phenanthrones and derivatives thereof
Assignee: GD Searle LLC
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Filing: 1957-01-24
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Granted: 1958-04-29
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Willard M Hoehn
- 👤 Jr Roy H Bible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:23
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C43/215; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND 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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |