US3708468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disperse phenyl-azo-phenyl dyes
Assignee: Sandoz AG
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Filing: 1969-04-14
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Granted: 1973-01-02
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Expires: 1989-04-14
Abstract
Abstract 2-HAOGENO-4-NITRO-2''-ACYLAMINO - 4'' (DIALKYL)-AMINO1,1''-AZOBENZENE DYES ARE SUITABLE FOR DYEING FIBERS CONSISTING OF HYDROPHOBIC ORGANIC SUBSTANCES OF HIGH MOLECULAR WEIGHT AND MATERIALS MADE OF THESE FIBERS. RESULTING DYEINGS ARE OF RED SHADE, HAVE GOOD FASTNESS PROPERTIES GOOD WOOL RESERVE AND DISCHARGEABILITY AND STABILITY TO ACTION OF SOIL RELEASE FINISHES AND PERMANENT PRESS FINISHING PROCESSES.
Inventors
- 👤 R Hahn
- 👤 C Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:15
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |