US3679353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct dye,alkanolamine or morpholine,and neutral salt concentrate and milling preparation thereof
Assignee: GAF Corp
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Filing: 1969-10-30
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Granted: 1972-07-25
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Expires: 1989-10-30
Abstract
Abstract A METHOD OF PREPARING LIQUID DISPERSIONS OF DIRECT DYES. THE METHOD INCLUDES THE STEPS OF MIXING A DIRECT DYE AND A NEUTRAL SALT WITH WATER AND MILLING THE RESULTING MIXTURE TO PRODUCE A POURABLE VISCOUS LIQUID OR PASTE.
Inventors
- 👤 Clemens Streck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |