US4057571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 11-deoxy-substituted prostaglandins of the E and F series
Assignee: Wyeth Holdings LLC
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Filing: 1975-02-24
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Granted: 1977-11-08
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Expires: 1995-02-24
Abstract
Abstract This disclosure describes 11-deoxy-11-substituted members of the E 2 , F 2 , E 1 , F 1 , dihydro E 1 and dihydro F 1 prostaglandin series which are useful as hypotensive agents and as anti-ulcer agents.
Inventors
- 👤 Charles Vincent Grudzinskas
- 👤 Martin Joseph Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:21
CPC Classifications
C; C07; C07C; C07C405/00; C07C405/0008; C07C405/0041; C07C405/0033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A compound of the structure: ##STR11## wherein A is CHOH or C═O; and R is H or alkyl of from 1 to 12 carbon atoms.
Claim 2
Dependent Claim
25 words
A compound of the structure: ##STR11## wherein A is CHOH or C═O; and R is H or alkyl of from 1 to 12 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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |