US3254100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocortisone 21-(lower alkane) sulfonate
Assignee: Merck and Co Inc
•
Filing: 1961-04-17
•
Granted: 1966-05-31
•
Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 John P Conbere
- 👤 Iii Karl Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
C; C07; C07J; C07J31/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
HYDROCORTISONE 21-MESYLATE.
Claim 2
Dependent Claim
2 words
HYDROCORTISONE 21-MESYLATE.
References Cited (Backward Citations)
US2842568A
Cited
US3068223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |