Patent US4866399A successfully refreshed from Google Patents.
Patent US5198723A successfully refreshed from Google Patents.
US5198723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous panel display device
Assignee: Individual
•
Filing: 1989-12-11
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Granted: 1993-03-30
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Expires: 2009-12-11
Abstract
Abstract A gas discharge display apparatus in the form of an electroluminescent gas filled panel adapted for quickly and inexpensively making a durable and robust luminous sign using image patterns transferred to the panel by painting, silkscreening, stencilling, lithography, or the like. The apparatus generally includes a pair of substantially parallel spaced apart rigid plates, or sheets, enclosing an electroluminescent gas, and having variously located and kinds of conductive elements, such as surface coatings, used as electrodes for energizing the enclosed electroluminescent gas.
Inventors
- 👤 William P. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:41
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; G; G09; G09F; G09F13/00; G09F13/20; G09F13/22; G09F13/04; G09F13/0418; G09F13/045; G09F2013/227
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
223 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element is a wire positioned on the surface of or within said second sheet member.
Claim 2
Dependent Claim
223 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element is a wire positioned on the surface of or within said second sheet member.
Claim 3
Dependent Claim
14 words
A display device according to claim 1 wherein said wire establishes a conductive grid.
Claim 4
Dependent Claim
25 words
A display device according to claim 2 wherein said grid underlies at least in part said closed region and a portion of said coating region.
Claim 5
Dependent Claim
220 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element is a wire extending at least partially through said closed region.
Claim 6
Dependent Claim
220 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element is a wire extending at least partially through said closed region.
Claim 7
Dependent Claim
231 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element extends at least partially around the periphery of said closed region, and wherein said conductive element is integral with said spacer means.
Claim 8
Dependent Claim
231 words
A luminous panel display device comprising: A. a first non-conductive sheet member having front and back surfaces, said first sheet member having a coating region on portions of its front surface, said coating region being adapted to receive a first conductive coating representative of a predetermined image; B. a second non-conductive sheet member having front and back surfaces, wherein at least one of said first and second sheet members is transparent; C. spacer means for mutually positioning said first and second sheet members whereby the back surface of said first sheet member is offset by a predetermined separation from and opposite the front surface of said second sheet member; D. discharge chamber means for establishing a gas impervious seal between portions of the back surface of said first sheet member and the front surface of said second sheet member to define a closed region in the gap between said back surface of said first sheet member and the front surface of said second sheet member and underlying said coating region; E. electroluminescent gas disposed within said closed region; and F. a conductive element disposed on a portion of one of the front and back surfaces of, or within, or adjacent to, said second sheet member, wherein said conductive element extends at least partially around the periphery of said closed region, and wherein said conductive element is integral with said spacer means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |