Patent US3817867A successfully refreshed from Google Patents.
US3817867A
Expired / Lapsed
US
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Emulsion liquid developer for electrostatic images
Assignee: Canon Inc
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Filing: 1971-03-22
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Granted: 1974-06-18
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Expires: 1991-03-22
Abstract
Abstract THIS INVENTION PROVIDES AN EMULSION LIQUID DEVELOPER FOR ELECTROSTATIC IMAGES WHICH COMPRISES A LIQUID-LIQUID SYSTEM DISPERSINGLY CONTAINING IN A CARRIER LIQUID HAVING A HIGH ELECTRIC RESISTANCE, SMALL PARTICLES OF DEVELOPER PHASE LIQUID WHICH ARE MUTUALLY INSOLUBLE WITH SAID CARRIER AND COMPRISE A FILM FORMING MATERIAL CONTAINING 100 PERCENT OF NON-VOLATILE MATTER, THE FILM FORMING MATERIAL BEING LIQUID AT THE DEVELOPING TEMPERATURE.
Inventors
- 👤 S Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:25
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/13; G03G9/131; G03G9/132
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |