US3795529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature sensitive visible display device
Assignee: NCR Voyix Corp
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Filing: 1972-11-15
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Granted: 1974-03-05
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Expires: 1992-11-15
Abstract
Abstract A MIXTURE OF CHOLESTERIC LIQUID CRYSTAL MATERIAL SUCH A CHOLESTERYL NONANOATE AND NEMATIC LIQUID CRYSTAL MATERIAL SUCH AS METHOXYBENZILIDENE-P-N-BUTYLANILINE IS DISCLOSED. THE MIXTURE CAN BE ENCAPSULATED AND EMPLOYED IN TEMPERATURE-SENSITIVE VISUAL DISPLAY DEVICES. THE ADDITION OF NEMATIC LIQUID CRYSTAL MATERIAL TO CHOLESTERIC LIQUID CRYSTAL MATERIAL ENHANCES THE BRIGHTNESS OF FILMS EMPLOYING CHOLESTERIC LIQUID CRYSTAL MATERIAL AND PROLONGS THE USABLE LIFE OF THE FILMS.
Inventors
- 👤 J Cartmell
- 👤 D Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/132; G02F1/133; G02F1/1333; G02F1/1334; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/29; Y10T428/2982; Y10T428/2984
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |