US3707322A
Expired / Lapsed
US
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Electrostatic latent imaging system using a cholesteric to nematic phase transition
Assignee: JAMES H BECKER
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Filing: 1971-08-05
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Granted: 1972-12-26
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Expires: 1991-08-05
Abstract
Abstract A system transforming an optically negative liquid crystalline substance to an optically positive liquid crystalline mesophase by an applied electrical field, and an imaging system wherein the electrical field-induced transition images a liquid crystalline member.
Inventors
- 👤 Joseph J Wysocki
- 👤 James E Adams
- 👤 James H Becker
- 👤 Robert W Madrid
- 👤 Werner E L Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:53
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/36; C09K19/52; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/135; G02F1/137; G02F1/13731
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
The method of claim 1 wherein tHe electrostatic latent image support surface is a photoconductive insulating layer.
Claim 2
Dependent Claim
16 words
The method of claim 1 wherein the electrostatic latent image support surface is a xerographic plate.
References Cited (Backward Citations)
US3627408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |