Patent US3862984A successfully refreshed from Google Patents.
US3862984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
15-oxo,11{62 pgf{hd 2{b {301 and {331
Assignee: Pharmacia and Upjohn Co
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Filing: 1973-10-03
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Granted: 1975-01-28
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Expires: 1993-10-03
Abstract
Abstract Novel methods are disclosed for transforming PGA2 and 15 Beta PGA2 and their acetates, methyl esters, and acetate methyl esters to various prostanoic acids and esters of the PGE2 and PGF2 series. Some of the latter are novel and are useful for the same pharmacological purposes as PGE2 and PGF2 .
Inventors
- 👤 John E Pike
- 👤 William P Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:33
CPC Classifications
C; C07; C07C; C07C405/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
A compound according to claim 1 wherein the HO * is attached to the ring in alpha configuration.
Claim 2
Dependent Claim
10 words
A compound according to claim 2 wherein R1 is hydrogen.
Claim 3
Dependent Claim
18 words
A compound according to claim 1 wherein the HO * is attached to the ring in beta configuration.
Claim 4
Dependent Claim
10 words
A compound according to claim 4 wherein R1 is hydrogen.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |