Patent US4498106A successfully refreshed from Google Patents.
US2982775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11-oximino-, amino- and acylaminosteroids
Assignee: Merck Sharp & Dohme LLC
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Filing: 1957-05-06
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Granted: 1961-05-02
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Oliveto
- 👤 Richard C Rausser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:05
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A METHOD OF MAKING 11-OXIMINO STEROIDS OF THE PREGNANE SERIES WHICH COMPRISES HEATING AT REFLUX TEMPERATURE OF A SOLVENT FOR THE STEROID BOILING IN THE RANGE FROM ABOUT 64* TO ABOUT 115*C. 11-KETOSTEROID OF THE GENERAL FORMULA
Claim 2
Independent Claim
37 words
A METHOD OF MAKING 11-OXIMINO STEROIDS OF THE PREGNANE SERIES WHICH COMPRISES HEATING AT REFLUX TEMPERATURE OF A SOLVENT FOR THE STEROID BOILING IN THE RANGE FROM ABOUT 64* TO ABOUT 115*C. 11-KETOSTEROID OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2773076A
Cited
US2769020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |