Patent US3816113A successfully refreshed from Google Patents.
US3816113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nematic liquid crystalline compositions having extended mesomorphic range
Assignee: Xerox Corp
•
Filing: 1971-09-13
•
Granted: 1974-06-11
•
Expires: 1991-09-13
Abstract
Abstract Compositions formed from nematic liquid crystalline compounds are disclosed. The novel compositions of the invention have extended nematic mesomorphic temperature ranges which are significantly larger than those of the individual components of the compositions and are stable at relatively low temperatures.
Inventors
- 👤 W Haas
- 👤 J Flannery
- 👤 B Mechlowitz
- 👤 J Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:00
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135; C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/22; G09; G09F; G09F13/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
13 words
Liquid crystalline compositions comprising from about 50 to about 70 weight percent of
Claim 2
Dependent Claim
13 words
Liquid crystalline compositions comprising from about 60 to about 80 weight percent of
Claim 3
Dependent Claim
13 words
Liquid crystalline compositions comprising from about 50 to about 80 weight percent of
Claim 4
Dependent Claim
13 words
Liquid crystalline compositions comprising from about 50 to about 70 weight percent of
Claim 5
Dependent Claim
56 words
A method for transforming a liquid crystalline material from the optically transparent state to a light-scattering state comprising, providing a liquid crystalline material comprising a composition of claim 1, and applying an electric field across said liquid crystalline material, said electric field being of sufficient strength to transform said liquid crystalline material to a light-scattering state.
Claim 6
Dependent Claim
25 words
The method as defined in claim 6 wherein the liquid crystalline material is arranged between two electrodes at least one of which is substantially transparent.
Claim 7
Dependent Claim
75 words
The method of imaging a liquid crystalline material comprising, providing a layer of a liquid crystalline material shaped in image configuration between two electrodes at least one of which is substantially transparent, said liquid crystalline material comprising a composition of claim 1, and applying an electric field across said liquid crystalline material, said electric field being of sufficient strength to transform said liquid crystalline material to a light-scattering state whereby a visible image is formed.
Claim 8
Dependent Claim
82 words
The method of imaging a liquid crystalline material comprising, providing a layer of a liquid crystalline material between two electrodes at least one of which is substantially transparent and at least one of which is shaped in image configuration, said liquid crystalline material comprising a composition of claim 1, and applying an electric field across said liquid crystalline material, said electric field being of sufficient strength to transform said liquid crystalline material to a light-scattering state whereby a visible image is formed.
Claim 9
Dependent Claim
104 words
The method of imaging a liquid crystalline material comprising, providing a layer of a liquid crystalline material between two electrodes at least one of which is substantially transparent and at least one of which includes a photoconductive surface, said liquid crystalline material comprising a composition of claim 1, energizing said electrodes by applying a potential thereto, exposing said photoconductive surface to an imagewise pattern of activating electromagnetic radiation causing an imagewise electric field to be applied across said liquid crystalline material, said electric field being of sufficient strength to transform said liquid crystalline material to a light-scattering state whereby a visible image is formed.
Claim 10
Dependent Claim
167 words
The method of producing a display comprising providing a display device comprising first and second spaced plates, at least one of which is substantially transparent, a plurality of parallel electrically conductive films on one face of said first plate, a plurality of parallel electrically conductive films on one face of said second plate, the plurality of conductive films on at least one plate being substantially transparent, said two plates being positioned with said faces bearing said parallel conductive films adjacent and parallel to each other and the direction of said conductive films on one plate being perpendicular to the direction of said conductive films on the other plate, and a liquid crystalline material comprising a composition of claim 1 filling the space between said plates, and selectively energizing at least one conductive film on each plate causing an electric field to be selectively applied across said liquid crystalline material, said electric field being of sufficient strength to selectively transform said liquid crystalline material to a light-scattering state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |