US3741954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo and disazo compounds having a nitroanilinosulfonyloxyphenyl group
Assignee: Sandoz AG
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Filing: 1970-09-23
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Granted: 1973-06-26
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Expires: 1990-09-23
Abstract
Abstract AND SUBSTITUTED DERIVATIVES THEREOF, WHEREIN EACH E IS INDEPENDENTLY ARYL OR ACYLACETHYL, E.G., PHENYL, NAPTHYL, THIAZOLYL, BENZOTHIAZOLYL, THIADIAZOLYL, IMIDAZOLYL, PYRAZOLYL AND ACYL BENZENE 1-((E-N=N)M-C6H4-NH-),2-(O2N-),4-((E-N=N)N-C6H4-O-SO2-)- COMPOUNDS OF THE FORMULA AND SUBSTITUTED DERIVATIVES THEREOF, M IS 0 OR 1, AND N IS 0 OR 1, WITH THE PROVISO THAT THE SUM OF M AND N IS 1 OR 2. THESE DYES ARE HIGHLY SUITABLE FOR DYEING AND PRINTING FIBRES, YARNS AND TEXTILES CONSISTING OF SYNTHETIC OR REGENERATED ORGANIC MATERIALS OF HIGH MOLECULAR WEIGHT AND HYDROPHOBIC CHARACTER. >CH-CO-NH-C6H5
Inventors
- 👤 R Altermatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:07
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/11; C09B43/18; C09B43/24; C09B56/00; C09B56/005
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |