US3788995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid electrographic developers
Assignee: Eastman Kodak Co
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Filing: 1971-06-03
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Granted: 1974-01-29
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Expires: 1991-06-03
Abstract
Abstract LIQUID DEVELOPERS FOR ELECTROGRAPHY ARE MADE USING ADDITION POLYMERS CONTAINING A POLAR MOIETY AND AT LEAST ONE ADDITIONAL MOIETY HAVING PREDETERMINED SOLUBILITY CHARACTERISTICS WITH RESPECT TO THE CARRIER LIQUID. MIXTURES OF THESE POLYMERS MAY ALSO BE USED.
Inventors
- 👤 F Stahly
- 👤 S Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:12
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/13; G03G9/131; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/105
Claims Analysis
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |