Patent US3553245A successfully refreshed from Google Patents.
US3553245A
Expired / Lapsed
US
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Cyanomethylidene aniline compounds
Assignee: Novartis Corp
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Filing: 1968-04-02
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Granted: 1971-01-05
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Expires: 1988-04-02
Abstract
Abstract NC-C(-Z)=CH-R-N(-R1)-CH2-CH2-SO2-CH2-CH2-N(-R3)-R2-CH= COMPOUNDS HAVING THE FORMULA WHEREIN Z IS CYANO, CARBAMOYL OR ALKOXYCARBONYL; R AND R2 ARE P-PHENYLENE GROUPS; AND R1 AND R3 ARE ALKYL, CYCLOHEXYL, OR PHENYL GROUPS ARE USEFUL FOR DYEING HYDROPHOBIC TEXTILE MATERIALS. C(-Z)-CN
Inventors
- 👤 Max A Weaver
- 👤 John I Dale
- 👤 James M Straley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:02
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14; C09B23/143; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922; Y10S8/924
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |