Patent US3341373A successfully refreshed from Google Patents.
Patent US3901893A successfully refreshed from Google Patents.
US3901893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New dihydro-lysergic acid derivative
Assignee: Richter Gedeon Nyrt
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Filing: 1973-06-01
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Granted: 1975-08-26
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Expires: 1993-06-01
Abstract
Abstract A compound of the formula IS PREPARED BY HYDROGENATING THE CORRESPONDING 9,10-UNSATURATED LYSERGIC ACID DERIVATIVE. The new compound of the formula (I) and its acid addition salts possess valuable antiserotonine activities.
Inventors
- 👤 Nee Karacsony Erzsebet Mago
- 👤 Jozsef Borsi
- 👤 Tibor Balogh
- 👤 Lajos Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:08
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/04; C07D457/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |