US2897218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-methyl-1-dehydro analogues of cortisone, hydrocortisone and 21-esters thereof
Assignee: Pharmacia and Upjohn Co
•
Filing: 1956-11-23
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Granted: 1959-07-28
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Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Oldrich K Sebek
- 👤 George B Spero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/843; Y10S435/911; Y10S435/929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2756179A
Cited
US2736734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |