Patent US3845047A successfully refreshed from Google Patents.
US3845047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,3-bis-(acylmercaptomethyl)-quinoxalines
Assignee: Novartis Corp
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Filing: 1971-07-06
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Granted: 1974-10-29
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Expires: 1991-07-06
Abstract
Abstract 1. A COMPOUND OF THE FORMULA 2-(R3-S-CH2-),3-(R4-S-CH2-),6-R1,7-R2-QUINOXALINE IN WHICH R1 AND R2, INDEPENDENTLY OF EACH OTHER, STAND FOR HYDROGEN, HALOGEN OR METHOXY; R3 AND R4 EACH INDEPENDENTLY STAND FOR LOWER ALKANOYL, LOWER ALKANOYL SUBSTITUTED BY HALOGEN OR HYDROXY, OR PYRIDINE-2-, 3- OR 4-CARBONYL, AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF.
Inventors
- 👤 C Egli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:42
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/38; C07D241/40; C07D403/00; C07D403/14
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)
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |