US4814211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystalline composites
Assignee: Celanese Corp
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Filing: 1987-04-10
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Granted: 1989-03-21
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Expires: 2007-04-10
Abstract
Abstract This invention provides an optical medium which consists of a composite of homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline component. In one embodiment this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline compound.
Inventors
- 👤 Alan Buckley
- 👤 Tessie M. Che
- 👤 Thomas M. Leslie
- 👤 James B. Stamatoff
- 👤 Dagobert E. Stuetz
- 👤 Donald R. Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
An optical medium comprising a composite composition of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline component; wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pore diameters are within about a 100 angstrom diameter variation range.
Claim 2
Dependent Claim
55 words
An optical medium comprising a composite composition of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline component; wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pore diameters are within about a 100 angstrom diameter variation range.
Claim 3
Dependent Claim
14 words
An optical medium in accordance with claim 1 wherein the inorganic oxide comprises silica.
Claim 4
Dependent Claim
24 words
An optical medium in accordance with claim 1 wherein the inorganic oxide comprises a mixture of silica and at least one additional inorganic oxide.
Claim 5
Dependent Claim
21 words
An optical medium in accordance with claim 1 wherein the inorganic oxide has purity of at least about 98 weight percent.
Claim 6
Dependent Claim
21 words
An optical medium in accordance with claim 1 wherein the liquid crystalline component is in the mesophase state at ambient temperatures.
Claim 7
Dependent Claim
20 words
An optical medium in accordance with claim 1 wherein the liquid crystalline component is in combination with an organic dye.
Claim 8
Dependent Claim
32 words
An optical medium in accordance with claim 1 wherein the liquid crystalline component is concentrated in a zone of the microporous structure which is adjacent to a surface of the glass monolith.
Claim 9
Dependent Claim
28 words
An optical medium in accordance with claim 1 wherein the content of the liquid crystalline component has a gradient distribution in the microporous structure of the glass monolith.
Claim 10
Dependent Claim
18 words
An optical medium in accordance with claim 1 which has a thickness dimension less that about 5 millimeters.
Claim 11
Dependent Claim
27 words
An optical medium in accordance with claim 1 wherein between about 5-95 percent of the glass monolith microporous structure volume is filled with the liquid crystalline component.
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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |