US2697109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16-nitromethylpregnen-20-ones and process
Assignee: GD Searle LLC
•
Filing: 1953-06-19
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Granted: 1954-12-14
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Expires: 1973-06-19
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:54
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0033; C07J41/005; C07J13/00; C07J13/005; C07J63/00; C07J63/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A 16- NITROMETHYLPREGNENE-20-ONE SUBSTITUTED IN THE 3-POSITION BY A MEMBER OF THE CLASS CONSISTING OF OXO, HYDROXY, BENZYLOXY AND (LOWER ALKYL)-COO-RADICALS.
Claim 2
Dependent Claim
21 words
A 16- NITROMETHYLPREGNENE-20-ONE SUBSTITUTED IN THE 3-POSITION BY A MEMBER OF THE CLASS CONSISTING OF OXO, HYDROXY, BENZYLOXY AND (LOWER ALKYL)-COO-RADICALS.
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |