US3738925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentration process
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-03-19
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Granted: 1973-06-12
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Expires: 1991-03-19
Abstract
Abstract PAINT COMPOSITONS, IN WHICH PIGMENT, IONISED BINDER AND BINDER COUNTER-ION ARE DISPERSED IN A CONTINUOUS MEDIUM, ARE CONCENTRATED UNDER THE INFLUENCE OF AN ELECTRIC FIELD BETWEEN BATTIERS OF MATERIAL PERMEABLE TO CONTINUOUS MEDIUM AND BINDER COUNTER-ION BUT IMPERMEABLE TO PIGMENT AND IONISED BINDER. DILUTED AQUEOUSPAINTS, PARTICULARLY WHEN OBTAINED BY RINSING ARTICLES COATED BY ELECTRODEPOSITION, ARE TREATED TO PROVIDED A MORE SUITABLE EFFLUENT.
Inventors
- 👤 B Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:34
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/22; C25D13/24; C09; C09D; C09D7/00; C09D7/80
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |