Patent US4674525A successfully refreshed from Google Patents.
Patent US3904906A successfully refreshed from Google Patents.
US3904906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma display panel including an opaque, reinforcing film
Assignee: Fujitsu Ltd
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Filing: 1972-12-20
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Granted: 1975-09-09
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Expires: 1992-12-20
Abstract
Abstract A plasma display panel of long life, more than several thousand hours, having a plurality of electrode pairs covered with dielectric layers facing to discharge gas space, and surface reinforcing film on one or both surface of the dielectric layers facing to discharge gas space. The surface reinforcing film is made from insulating materials, the chief component of which is an oxide of a rare-earth element.
Inventors
- 👤 Mitsuoki Osawa
- 👤 Toshinori Urade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
H; H01; H01J; H01J11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PLASMA DISPLAY PANEL COMPRISING, A. A FIRST AND A SECOND DIELECTRIC SUBSTRATE SAID FIRST AND SECOND SUBSTRATES BEING SPACED FROM EACH OTHER AND SEALED, A DISCHARGE GAS CONTAINED WITHIN SAID SEALED SUBSTRATES FORMING A DISCHARGE GAS SPACE, AT LEAST ONE OF SAID SUBSTRATES BEING TRANSPARENT, B. FIRST AND SECOND ELECTRODES MOUNTED ON SAID FIRST AND SECOND SUBSTRATES, RESPECTIVVVELY,
Claim 2
Dependent Claim
59 words
A PLASMA DISPLAY PANEL COMPRISING, A. A FIRST AND A SECOND DIELECTRIC SUBSTRATE SAID FIRST AND SECOND SUBSTRATES BEING SPACED FROM EACH OTHER AND SEALED, A DISCHARGE GAS CONTAINED WITHIN SAID SEALED SUBSTRATES FORMING A DISCHARGE GAS SPACE, AT LEAST ONE OF SAID SUBSTRATES BEING TRANSPARENT, B. FIRST AND SECOND ELECTRODES MOUNTED ON SAID FIRST AND SECOND SUBSTRATES, RESPECTIVVVELY,
References Cited (Backward Citations)
US3716742A
Cited
US3787106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |