Patent US2665220A successfully refreshed from Google Patents.
US2665220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing luminescent screens
Assignee: Hartford National Bank and Trust Co
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Filing: 1949-02-26
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Granted: 1954-01-05
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Expires: 1969-02-26
Abstract
No abstract record available.
Inventors
- 👤 Gier Johannes De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:06
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF MANUFACTURING A LUMINESCENT SCREEN ASSEMBLY FOR A CATHODE RAY TUBE WHICH COMPRISES DEPOSITING A LAYER OF LUMINESCENT PARTICLES ON A LIGHT-TRANSPARENT BASE, APPLYING A TEMPORARY LAYER OF HEAT VOLATILIZABLE FILM-FORMING ORGANIC COATING MATERIAL OVER SAID LUMI NESCENT LAYER TO FROM A SMOOTH SURFACE THEREOVER, APPLYING AN ELECTRON AND LIGHT-PERVIOUS LAYER OF ALUMINUM OVER SAID LAYER OF HEAT-REMOVABLE MATERIAL, HEATING THE ALUMINUM LAYER IN AN OXIDIZING ATMOSPHERE TO CONVERT THE SAME TO A LAYER OF AN OXIDE OF SAID METAL, WHILE REMOVING THE TEMPORARY INTERMEDIATE LAYER, AND THEREAFTER APPLYING A THIN LIGHT REFLECTING ELECTRON PERMEABLE METAL LAYER OVER SAID METAL OXIDE LAYER, SAID
Claim 2
Independent Claim
105 words
A METHOD OF MANUFACTURING A LUMINESCENT SCREEN ASSEMBLY FOR A CATHODE RAY TUBE WHICH COMPRISES DEPOSITING A LAYER OF LUMINESCENT PARTICLES ON A LIGHT-TRANSPARENT BASE, APPLYING A TEMPORARY LAYER OF HEAT VOLATILIZABLE FILM-FORMING ORGANIC COATING MATERIAL OVER SAID LUMI NESCENT LAYER TO FROM A SMOOTH SURFACE THEREOVER, APPLYING AN ELECTRON AND LIGHT-PERVIOUS LAYER OF ALUMINUM OVER SAID LAYER OF HEAT-REMOVABLE MATERIAL, HEATING THE ALUMINUM LAYER IN AN OXIDIZING ATMOSPHERE TO CONVERT THE SAME TO A LAYER OF AN OXIDE OF SAID METAL, WHILE REMOVING THE TEMPORARY INTERMEDIATE LAYER, AND THEREAFTER APPLYING A THIN LIGHT REFLECTING ELECTRON PERMEABLE METAL LAYER OVER SAID METAL OXIDE LAYER, SAID
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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |