Patent US4601134A successfully refreshed from Google Patents.
Patent US2992216A successfully refreshed from Google Patents.
US2992216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delta4, 6-3-keto steroid compounds
Assignee: Pfizer Inc
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Filing: 1957-01-11
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Granted: 1961-07-11
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Expires: 1977-01-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Agnello
- 👤 Gerald D Laubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:53
CPC Classifications
C; C07; C07J; C07J71/00; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A COMPOUND CHOSEN FROM THE CLASS CONSISTING OF $4,6 - PREGNADINE - 11B,14A,17A,21 - TERTOL - 3,20 -DIONES,$4,6 - PREGNADINE - 14A,17A21 -TRIOL-3,11,20 -TRIONES, $4,6-PREGNADINE - AND $1,4,6-PREGNATRIENE -11B,17A,21-TRIOL-3,20-DIONE-14,15- EPOXIDES,$4,6-PREGNADIENE- AND $1,4,6-PREGNATRIENE-17A,21-DIOL-3,11,20TRIONE-14,15-EPOXIDES, $4,6,14-PREGNATRINE- AND $1,4,6,14-PREGNATETREENE-AND $1,4,6,14-TRIOL-3,20-DIONES, AND $4,6,14-PRIGNATRIENE-AND $1.4,6,14-PREGNATETRENE17A,21-DIOL-3,11,20-TRIONES, AND THEIR 21- HYDROCARBON CARBOXYLIC ACID ESTERS HAVING BETWEEN ONE AND TEN CARBONS IN THE ACYL CHAIN.
Claim 2
Dependent Claim
56 words
A COMPOUND CHOSEN FROM THE CLASS CONSISTING OF $4,6 - PREGNADINE - 11B,14A,17A,21 - TERTOL - 3,20 -DIONES,$4,6 - PREGNADINE - 14A,17A21 -TRIOL-3,11,20 -TRIONES, $4,6-PREGNADINE - AND $1,4,6-PREGNATRIENE -11B,17A,21-TRIOL-3,20-DIONE-14,15- EPOXIDES,$4,6-PREGNADIENE- AND $1,4,6-PREGNATRIENE-17A,21-DIOL-3,11,20TRIONE-14,15-EPOXIDES, $4,6,14-PREGNATRINE- AND $1,4,6,14-PREGNATETREENE-AND $1,4,6,14-TRIOL-3,20-DIONES, AND $4,6,14-PRIGNATRIENE-AND $1.4,6,14-PREGNATETRENE17A,21-DIOL-3,11,20-TRIONES, AND THEIR 21- HYDROCARBON CARBOXYLIC ACID ESTERS HAVING BETWEEN ONE AND TEN CARBONS IN THE ACYL CHAIN.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |