US4291157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Octanoylhydrazone derivatives of adriamycin
Assignee: SRI International Inc
•
Filing: 1980-07-22
•
Granted: 1981-09-22
•
Expires: 2000-07-22
Abstract
Abstract Adriamycin octanoylhydrazone, and its pharmaceutically acceptable salts, having good antitumor activity coupled with low toxicity.
Inventors
- 👤 David W. Henry
- 👤 George L. Tong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/24; C07H15/252
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
9 words
Adriamycin octanoylhydrazone and its pharmaceutically acceptable acid addition salts.
Claim 2
Dependent Claim
9 words
Adriamycin octanoylhydrazone and its pharmaceutically acceptable acid addition salts.
Claim 3
Dependent Claim
10 words
The compound of claim 1 which is adriamycin octanoylhydrazone hydrochloride.
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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |