US4169103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonatetraenoic acid derivatives
Assignee: Hoffmann La Roche Inc
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Filing: 1978-04-12
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Granted: 1979-09-25
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Expires: 1998-04-12
Abstract
Abstract The compound 9-(2,2,5-trimethyl-4-hydroxy or oxo-1-cyclohexenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid and derivatives useful as antitumor agents and in the prophylaxis and/or treatment of certain carcinomas.
Inventors
- 👤 Ralph Haenni
- 👤 Gottlieb Ryser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:37
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/20; A; A61; A61P; A61P35/00; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
The compound 9(2,6,6-trimethyl-3-hydroxy-1-cyclohexenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid.
Claim 2
Dependent Claim
4 words
The compound 9(2,6,6-trimethyl-3-hydroxy-1-cyclohexenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |