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Patent US3700653A successfully refreshed from Google Patents.
US3700653A
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US
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Dye preparations containing a metallized disazo dye and monopropanolamine
Assignee: Sandoz AG
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Filing: 1968-10-29
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Granted: 1972-10-24
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Expires: 1988-10-29
Abstract
Abstract STABLE, CONCENTRATED DYE PREPARATIONS CONTAINING ONE METALLIZED DYE OF THE AZO OR AZOMETHINE SERIES AND MONOPROPANOLAMINE OR AN AMINOTHIOLE.
Inventors
- 👤 Alfred Frei
- 👤 August Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/24; C09B45/28; C09B57/00; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; D21; D21H; D21H21/00; D21H21/14; D21H21/28
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |