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US3764429A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of forming cavities in a plasma display panel

Assignee: NCR Voyix Corp
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Filing: 1971-08-30
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Granted: 1973-10-09
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Expires: 1991-08-30
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Abstract

Abstract A METHOD OF FORMING CAVITIES IN A PLASMA DISPLAY PANEL HAVING FRONT AND REAR SUBSTRATES WITH THE CAVITIES FORMED THEREBETWEEN. IN ONE EMBODIMENT, LAYERS OF GLASS ARE SILKSCREENED ONTO ONE OF THE SUBSTRATES, OMITTING GLASS FROM THOSE AREAS WHERE CAVITIES ARE TO BE FORMED. THE NUMBER OF LAYERS OF GLASS TO BE SILK-SCREENED DEPENDES UPON THE DEPTH OF THE CAVITIES DESIRED. IN ANOTHER EMBODIMENT, THE DESIRED CAVITIES ARE CUT OUT OF A GLASS TRANSFER TAPE AND SECURED TO ONE OF THE SUBSTRATES. SIMILAR TAPES HAVING THE CUT-OUT PORTIONS IN REGISTRATION WITH ONE ANOTHER ARE SECURED TO ONE ANOTHER TO OBTAIN THE DESIRED CAVITY DEPTH. AFTER THE DESIRED CAVITY DEPTH IS OBTAINED, THE SUBSTRATE WITH THE REQUIRED NUMBER OF LAYERS OF GLASS THEREON IS FIRED IN AN OVEN.

Inventors

  • 👤 J Janning

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 13:50
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/491; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1074

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1976-10-08 1977-04-09 1977-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-08 1981-04-09 1981-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-08 1985-04-09 1985-10-09 $7700.00 Window Closed / Lapsed

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