US2822381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-oxygenated 16-hydroxy-d-homopregnen-20-ones and their esters
Assignee: GD Searle LLC
•
Filing: 1954-11-24
•
Granted: 1958-02-04
•
Expires: 1974-11-24
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Dodson
- 👤 Paul B Sollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:49
CPC Classifications
C; C07; C07J; C07J63/00; C07J63/008; C07C; C07C2603/00; C07C2603/02; C07C2603/40; C07C2603/42; C07C2603/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A MEMBER OF THE CLASS CONSISTING OF 3,16-DIHYDROXYD-HOMO-5-PREGNEN-20-ONE, 16-HYDROXY-D-HOMO-4-PREGNENE, 3,20-DIONE AND THEIR ESTERS OF HYDROCARBON CARBOXYLIC ACIDS CONTAINING NO MORE THAN 8 CARBON ATOMS.
Claim 2
Dependent Claim
24 words
A MEMBER OF THE CLASS CONSISTING OF 3,16-DIHYDROXYD-HOMO-5-PREGNEN-20-ONE, 16-HYDROXY-D-HOMO-4-PREGNENE, 3,20-DIONE AND THEIR ESTERS OF HYDROCARBON CARBOXYLIC ACIDS CONTAINING NO MORE THAN 8 CARBON ATOMS.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |