US3583877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating basic dyes
Assignee: Tenneco Chemicals Inc
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Filing: 1968-04-10
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Granted: 1971-06-08
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Expires: 1988-04-10
Abstract
Abstract PELLETS OF BASIC DYES ARE PREPARED BY COMPRESSING THE FINELY-DIVIDED DYE TO WHICH HAVE BEEN ADDED SMALL AMOUNTS OF IMMISCIBLE MATERIALS, AT LEAST ONE OF WHICH IS A SOLVENT FOR THE DYE AND AT LEAST ONE OF WHICH IS A NONSOLVENT FOR THE DYE, AND OPTIONALLY A DISPERSING AGENT. THESE PELLETS, WHICH ARE CLEAN AND FREE FROM DUST, ARE READILY DISPERSED IN THE VEHICLES THAT ARE USED IN THE MANUFACTURE OF HECTOGRAPH INKS AND OTHER PRINTING INKS.
Inventors
- 👤 Carl Rosenblum
- 👤 Seymour Broad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:08
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/22; C; C09; C09B; C09B67/00; C09B67/0097
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |