US2903378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming luminescent screens
Assignee: GTE Sylvania Inc
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Filing: 1957-12-31
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Granted: 1959-09-08
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Thaddens V Rychlewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS OF FORMING A LUMINESCENT SCREEN UPON A GLASS SUBSTRATE COMPRISING THE STEPS OF HEATING A MIXTURE OF MANGANESE ACTIVATED ZINC PHOSPHATE PHOSPHOR AND AN INORGANIC SALT TO VAPOR DEPOSIT SAID PHOSPHOR UPON THE SUBSTRATE, AND HEATING THE PHOSPHOR TO PROMOTE ACTIVATION THEREOF.
Claim 2
Dependent Claim
44 words
A PROCESS OF FORMING A LUMINESCENT SCREEN UPON A GLASS SUBSTRATE COMPRISING THE STEPS OF HEATING A MIXTURE OF MANGANESE ACTIVATED ZINC PHOSPHATE PHOSPHOR AND AN INORGANIC SALT TO VAPOR DEPOSIT SAID PHOSPHOR UPON THE SUBSTRATE, AND HEATING THE PHOSPHOR TO PROMOTE ACTIVATION THEREOF.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |