US3635941A
Expired / Lapsed
US
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Disperse mono azo dyes containing an acylamidotetrahydroquinoline group
Assignee: Novartis Corp
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Filing: 1969-04-01
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Granted: 1972-01-18
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Expires: 1989-04-01
Abstract
Abstract WATER-INSOLUBLE AZO COMPOUNDS HAVING A 1-ALKYL- OR 1 - CYCLOALKYL-7-ACYLAMIDO - 1,2,3,4 - TETRAHYDROQUINOLINE COUPLING COMPONENT AND CERTAIN SUBSTITUTED PHENYL GROUPS AS A DIAZO COMPONENTS ARE USEFUL AS DYES FOR POLYESTER TEXTILE MATERIALS.
Inventors
- 👤 Max A Weaver
- 👤 James M Straley
- 👤 Clarence A Coates Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:09
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; D; D06; D06P; D06P1/00; D06P1/16; D06P1/18
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |