US3690809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid azo dye composition and process therefor
Assignee: Morton International LLC
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Filing: 1971-04-05
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Granted: 1972-09-12
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Expires: 1991-04-05
Abstract
Abstract A LIQUID AZO DYE COMPOSITION WHIC HAS AT LEAST ABOUT 40 PERCENT OF THE COLOR VALUE OF A COMPARABLE SOLID DYE, EXHIBITS PERMANENT HOMOGENEOUS LIQUIDITY, AND IS CAPABLE OF COMPLETE AND INSTANTANEOUS SOLUBILITY IN PETROLEUM DISTILLATES. THE DYE COMPOSITION CONSISTS ESSENTIALLY OF BETWEEN ABOUT 50-75* BY WEIGH OF A MIXTURE OF AZO DYES CONTAINING C5-C12 ALKYL-BETA-NAPHTHOLS OR P-C5-C12 ALKYL PHENOL IN THE DYE MOLECULE AND ABOUT BETWEEN 50-25% BY WEIGHT OF A LIQUID ORGANIC VISCOSITY DEPRESSANT COMPATIBLE WITH THE AZO DYES.
Inventors
- 👤 Richard B Orelup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/008; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |