Patent US3631020A successfully refreshed from Google Patents.
US3631020A
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Monoazo compounds containing a hydrocarbyl sulfonamidoalkyl aniline coupling component
Assignee: Novartis Corp
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Filing: 1968-09-27
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Granted: 1971-12-28
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Expires: 1988-09-27
Abstract
Abstract MONOAZO COMPOUNDS WHICH ARE PARTICULARLY USEFUL FOR DYEING POLYESTER TEXTILE MATERIALS, EXHIBITIING THEREON EXCELLENT FASTNESS TO LIGHT AND RESISTANCE TO SUBLMATION, HAVE A HETEROCYCLIC DIAZO COMPONENT AND A COUPLING COMPONENT HAVING FORMULA 2-R1,4-(R5-O2S-N(-R6)-R4-N(-R3)-),5-R2-PHENYL IN WHICH R1 IS HYDROGEN, ALKYL, CHLORINE, BROMINE OR ACYLAMINO; R2 IS HYDROGEN, ALKYL OR ALKOXY; R3 IS HYDROGEN, ALKYL, CYCLOHEXYL, ARALKYL, OR ARYL; R4 IS ALKYLENE; R5 IS ALKYL, CYCLOHEXYL, ARYL, OR AMINO; AND R6 IS SUBSTITUTED ALKYL, CYCLOHEXYL, ARALKYL, ARYL, THIAZOLYL, BENZOTHIAZOLYL, THIADIAZOLYL, TRIAZOLYL, BENZIMIDAZOLYL, PYRIDYL, QUIROLYL, OR, WHEN R1 IS ACYLAMINO, ALKYL.
Inventors
- 👤 Max A Weaver
- 👤 David J Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:47
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |