Patent US3784558A successfully refreshed from Google Patents.
US3784558A
Expired / Lapsed
US
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Styryl dyestuffs
Assignee: Novartis AG
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Filing: 1970-10-13
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Granted: 1974-01-08
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Expires: 1990-10-13
Abstract
Abstract WATER-INSOLUBLE STYRYL DYESTUFFS OF THE FORMULA 1-(NC-C(-X)=CH-),2-Y1,4-(B-S-A-N(-R)-),5-Y2-CYCLOHEXANE IN WHICH X REPRESENTS A CYANO, CARBO-LOWER ALKOXY OR PHENYLSULPHONE GROUP, Y1 AND Y2 EACH REPRESENTS A HYDROGEN, R REPRESENTS A LOWER ALKYL, PHENYL-LOWER ALKYL, GROUP, R REPRESENTS ALOWER ALKYL, PHENYL-LOWER ALKYL, CYANO-LOWER ALKYL, LOWER ALKOXYALKYL OR ACYLOXYALKYL GROUP OR A RADICAL OF THE FORMULA-A-S-B, AND A REPRESENTS A LOWER ALKYLENE GROUP THAT MAY BE SUBSTITUTED BY A LOWER ALKONOYLOXY OR A BENZOLOXY GROUP AND B REPRESENTS A PHENYL GROUP.
Inventors
- 👤 R Peter
- 👤 W Jenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:38
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/28; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C09; C09B; C09B23/00; C09B23/14; C09B23/143; Y; Y10; Y10S; Y10S8/00; Y10S8/905; Y10S8/92; Y10S8/922; Y10S8/933
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |