US3663526A
Expired / Lapsed
US
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Disazo dyes containing an alkoxy-halogen-triazine group
Assignee: Novartis AG
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Filing: 1969-10-15
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Granted: 1972-05-16
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Expires: 1989-10-15
Abstract
Abstract A DISAZO COMPOUND OF THE FORMULA 2-(Y-R1-N=N-),3-(H-O3S-),5,6-BIS(Y-),7-(X-R2-N=N-), 8-(H2N-)-NAPHTH-1-OL IN WHICH ONE OF THE SYMBOLS Y REPRESENTS A HYDROGEN ATOM AND THE OTHER SYMBOL Y REPRESENTS A SULPHONIC ACID GROUP, R1 AND R2 EACH REPRESENTS AN AROMATIC RESIDUE CONTAINING A SULPHONIC ACID GROUP, ONE OF THE SYMBOLS X REPRESENTS A FIBRE-REACTIVE ALKOXY-HALOGENO-TRIAZINE GROUP BOUND TO THE AROMATIC RESIDUE BY WAY OF AN-NH GROUP, THE ALKOXY RESIDUE CONTAINS AN ETHERIFIED ALKYL RESIDUE, AND THE OTHER SYMBOL X REPRESENTS A HYDROGEN ATOM OR A FIBREREACTIVE ACYL RESIDUE BOUND TO THE AROMATIC RESIDUE BY WAY OF AN-NH GROUP.
Inventors
- 👤 Fritz Oesterlein
- 👤 Karl Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:46
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/01; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |