Patent US2876129A successfully refreshed from Google Patents.
US2876129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making transparent luminescent screens
Assignee: International Standard Electric Corp
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Filing: 1954-02-02
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Granted: 1959-03-03
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Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Rottgardt Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:12
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN THE PROCESS OF MAKING A TRANSPARENT LUMINOUS SCREEN FOR TELEVISION PICTURE TUBES HAVING A TRANSPARENT GLASS BASE CONSISTING OF SILICATES, THE STEPS COMPRISING DEPOSITIONING A METAL FLUORIDE ONTO THE SAID BASE AND HEATING THE BASE AND FLUORIDE TO CONVERT IT INTO A LAYER CONSISTING ESSENTIALLY OF A SILICATE OF SAID METAL.
Claim 2
Dependent Claim
52 words
IN THE PROCESS OF MAKING A TRANSPARENT LUMINOUS SCREEN FOR TELEVISION PICTURE TUBES HAVING A TRANSPARENT GLASS BASE CONSISTING OF SILICATES, THE STEPS COMPRISING DEPOSITIONING A METAL FLUORIDE ONTO THE SAID BASE AND HEATING THE BASE AND FLUORIDE TO CONVERT IT INTO A LAYER CONSISTING ESSENTIALLY OF A SILICATE OF SAID METAL.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |