US2841600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6alpha-fluoro delta-cortisone and 6alpha-fluoro delta'-hydrocortisone and the 21-acylates thereof
Assignee: Pharmacia and Upjohn Co
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Filing: 1957-01-18
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Granted: 1958-07-01
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Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 John A Hogg
- 👤 George B Spero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:08
CPC Classifications
C; C07; C07J; C07J21/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
6A-FLUORO - 11 - OXYGENATED - 17A,21 - DIHYDROXY-1,4PREGNADIENE-3,20-DIONE OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
13 words
6A-FLUORO - 11 - OXYGENATED - 17A,21 - DIHYDROXY-1,4PREGNADIENE-3,20-DIONE OF THE FOLLOWING FORMULA:
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |