Patent US3597434A successfully refreshed from Google Patents.
US3597434A
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Bis-beta,beta-di-cyanovinylenetetrahydroquinoline compounds
Assignee: Novartis Corp
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Filing: 1967-10-17
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Granted: 1971-08-03
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Expires: 1987-10-17
Abstract
Abstract COMPOUNDS HAVING TWO B,B-DI-CYANOVINYLENE-1,2,3,4TETRAHYDROQUINOLINE MOIETIES LINKED TOGETHER VIA THE RING NITROGEN ATOM OF EACH TETRAHYDROQUINOLINE MOIETY BY A DIESTER GROUP HAVING THE FORMULA -R2-OOC-R3-COO-R4- WHEREIN R2 AND R4 EACH IS ALKYLENE AND R3 IS ALKYLENE OR AN UNSUBSTITUTED OR SUBSTITUTED PHENYLENE GROUP.
Inventors
- 👤 Max A Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:07
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D215/00; C07D215/02; C07D215/04; C07D215/06; C07D215/12; C07D215/14; C07D215/16; C07D215/18; C07D215/20; C07D215/38; C09; C09B; C09B23/00; C09B23/14; C09B23/143; Y; Y10; Y10S; Y10S8/00; Y10S8/904; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/932
Claims Analysis
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |