US3787388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiazolyl-azo-tetrahydroquinoline compounds
Assignee: Novartis Corp
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Filing: 1972-04-19
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Granted: 1974-01-22
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Expires: 1992-04-19
Abstract
Abstract THHIAZOLYL-AZO-TETRAHYDROQUINOLINE COMPOUNDS IN WHICH THE NITROGEN ATOM OF THE TETRAHYDROQUINOLINE COUPLING COMPONENT IS SUBSTITUTED WITH A GROUP HAVING THE FORMULA -R1-N(-R3)-SO2-R2 WHEREIN R1 IS ALKYLENE AND R2 AND R3 EACH IS ALKYL, CYCLOALKYL OR ARYL. THE DISCLOSED COMPOUNDS ARE USEFUEL FOR DYEING HYDROPHOBIC TEXTILE MATERIALS SUCH AS POLYESTER FIBERS.
Inventors
- 👤 M Weaver
- 👤 D Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3643
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |