US2838528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-fluoro steroids and process
Assignee: Pharmacia and Upjohn Co
•
Filing: 1957-11-29
•
Granted: 1958-06-10
•
Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Campbell J Allan
- 👤 John C Babcock
- 👤 John A Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:29
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
6-FLUOROPROGESTERONE.
Claim 2
Dependent Claim
1 words
6-FLUOROPROGESTERONE.
References Cited (Backward Citations)
US2332815A
Cited
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 |