Patent US2838531A successfully refreshed from Google Patents.
US2838531A
Expired / Lapsed
US
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6-fluoro-17alpha-hydroxypregnanes and esters
Assignee: Pharmacia and Upjohn Co
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Filing: 1958-02-19
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Granted: 1958-06-10
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Expires: 1978-02-19
Abstract
No abstract record available.
Inventors
- 👤 John C Babcock
- 👤 Campbell J Allan
- 👤 John A Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:39
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6 - FLUORO - 17A - HYDROXY - 1 - ALLOPREGNENE - 3,20 - DIONE AND 6 - FLORO - 17A -HYDROXY - 1 - ALLOPREGNENE - 3,20DIONE 17-ACYLATE WHEREIN THE ACYL GROUP IS OF A HYDROCARBON CARBOXYLIC ACID CONTAINING FROM ONE TO TWELVE CARBON ATOMS, INCLUSIVE.
Claim 2
Dependent Claim
55 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6 - FLUORO - 17A - HYDROXY - 1 - ALLOPREGNENE - 3,20 - DIONE AND 6 - FLORO - 17A -HYDROXY - 1 - ALLOPREGNENE - 3,20DIONE 17-ACYLATE WHEREIN THE ACYL GROUP IS OF A HYDROCARBON CARBOXYLIC ACID CONTAINING FROM ONE TO TWELVE CARBON ATOMS, INCLUSIVE.
Claim 3
Dependent Claim
36 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-FLUORO-17A-HYDROXY-1,4-PREGNADIENE-3,20-DIONE AND 6FLUORO-17A-HYDROXY -1,4 - PREGNADIENE 3,20 - DIONE 17ACYLATE, WHEREIN THE ACYL GROUP IS OF A HYDROCARBON CARBOXYLIC ACID, CONTAINING FROM ONE TO TWELVE CARBON ATOMS, INCLUSIVE.
Claim 4
Dependent Claim
36 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-FLUORO-17A-HYDROXY-1,4-PREGNADIENE-3,20-DIONE AND 6FLUORO-17A-HYDROXY -1,4 - PREGNADIENE 3,20 - DIONE 17ACYLATE, WHEREIN THE ACYL GROUP IS OF A HYDROCARBON CARBOXYLIC ACID, CONTAINING FROM ONE TO TWELVE CARBON ATOMS, INCLUSIVE.
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |