US3812093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic thiadiazolyl monoazo dyes
Assignee: Novartis Corp
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Filing: 1972-08-29
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Granted: 1974-05-21
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Expires: 1992-08-29
Abstract
Abstract THIS INVENTION RELATES TO CATIONIC MONOAZO DYESTUFFS CONTAINING A DIAZOTIZED 2-AMINO-1,3,4-THIADIAZOLE COUPLED WITH SELECTED QUATERNIZED DIALKYLANILINE COUPLERS HAVING THE FORMULA (R3-N(+)(-R4)(-R5)-R2-N(-R1)-)BENZENE WHEREIN R1 REPRESENTS HYDROGEN; ALKYL; ALKYL SUBSTITUTED WITH CYANO, PHENYL OR ALKOXY; PHENYL OR PHENYL SUBSTITUTED WITH ALKYL OR ALKOXY; R2 REPRESENTS ALKYLENE, CYCLOALKYLENE, OR ALKYLENE-NHCOALKYLENE; R3,R4, AND R5 MAY BE THE SAME OR DIFFERNT AND EACH REPRESENTS LOWER ALKYL; AND A REPRESENTS A BASIC DYE ANION. THESES DYES IMPART FAST ORANGE TO BLUISH-RED SHADES TO ACRYLIC, MODACRYLIC AND ACID-MODIFIED POLYESTER AND POLYAMIDE FIBERS.
Inventors
- 👤 J Fisher
- 👤 G Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:13
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; C09B44/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |