US3790557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiadiazolyl-azo-phenyl or-tetrahydroquinoline compounds
Assignee: Novartis Corp
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Filing: 1972-01-19
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Granted: 1974-02-05
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Expires: 1992-01-19
Abstract
Abstract MONOAZO COMPOUNDS CONSISTING OF A DIAZO COMPONENT HAVING THE FORMULA 2-(4-(R''-X-CO-)PHENYL)-1,3,4-THIADIAZOL-5-YL IN WHICH X IS OXYGEN, IMINO OR ALKYLIMINO AND R1 IS HYDROGEN, ALKYL, CYCLOALKYL OR ARYL, AND AN ANILINE OR 1,2,3,4-TETRAHYDROQUINOLINE DISPERSE AZO DYE COUPLING COMPONENT PRODUCE BRIGHT RED TO BLUISH-RED SHADES ON POLYESTER FIBERS AND EXHIBIT GOOD FASTNESS TO LIGHT AND RESISTANCE TO SUBLIMATION.
Inventors
- 👤 M Weaver
- 👤 J Straley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:57
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0025; C09B29/0074; C09B29/0092
Claims Analysis
Total Claims: 0
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |