US3729419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid developer
Assignee: Xerox Corp
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Filing: 1971-03-05
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Granted: 1973-04-24
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Expires: 1991-03-05
Abstract
Abstract LIQUID DEVELOPER FOR DEVELOPING AN ELECTROSTATIC LATENT IMAGE PRESENT ON AN ELECTROSTATOGRAPHIC IMAGING SURFACE COMPRISING AN VINSULATING LIQUID HAVING DISPERSED THEREIN POSITIVELY CHARGED MARKING PARTICLES AND ALSO CONTAINING AT LEAST ONE CHARGE CONTROL AGENT SELECTED FROM THE GROUP CONSISTING OF VINYLTHIETHOXYSILANE, Y-GLYCIDOXYPROPYLTRIMETHOXYSILANE, AND B-3,4-EPOXYCYCLOHEXYL)ETHYLTRIMETHOXYSILANE.
Inventors
- 👤 H Miyatuka
- 👤 S Honjo
- 👤 S Osawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:17
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/135; C; C10; C10M; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/10; C10N2010/14; C10N2040/00; C10N2040/20
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |