Patent US3770719A successfully refreshed from Google Patents.
US3770719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-amino-4-(azoyl)-azo-thiazole compounds and quaternary derivative thereof
Assignee: Novartis Corp
•
Filing: 1967-12-07
•
Granted: 1973-11-06
•
Expires: 1987-12-07
Abstract
Abstract MONOAZO COMPOUNDS CONTAINING A QUATERNIZED OR UNQUATERNIZED BENZOTHIAZOLYL, THIAZOLYL, PYRAZOLYL, THIADIAZOLYL OR TRIAZOLY DIAZO COMPONENT AND A 2-AMINO-4 THIAZOLY COUPLING COMPONENT. THE QUATERNARY AZO COMPOUNDS ARE USEFUL FOR DYEING ACRYLIC, MODACRYLIC AND ACIDMODIFIED POLYESTER TEXTILE MATERIALS ORANGE TO BLUE SHADES AND EXHIBIT EXCELLENT FASTNESS PROPERTIES SUCH AS FASTNESS TO LIGHT AND WET PROCESSING.
Inventors
- 👤 J Fisher
- 👤 C Coates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:15
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B44/103; C09B27/00; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |