US2559279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of electroluminescent screens
Assignee: CIE GENERALE DE T S F
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Filing: 1948-02-27
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Granted: 1951-07-03
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Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Charles Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:03
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/24; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24455; Y10T428/24463; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
PROCESS OF MANUFACTURING AN ELECTRO-LUMINESCENT SCREEN, COMPRISING THE FOLLOWING STEPS: SPRAYING UNIFORMLY DIRECTLY ON THE SURFACE OF A SOFT METAL SUPPORT PLATE OF ALUMINUM, A THIN LAYER OF CRYSTALS OF A LUMINESCENT SUBSTANCE WHOSE HARDNESS IS GREATER THAN THAT OF THE SUBSTANCE OF SAID PLATE, APPLYING ON SAID LAYER A PRESSING PLATE OF A SUBSTANCE OF GREATER HARDNESS WITH RESPECT TO SAID CRYSTALS, AND APPLYING AT NORMAL TEMPERATURE A PRESSURE ON SAID PRESSING PLATE THEREBY DISTRIBUTING UNIFORMLY AND SIMULTANEOUSLY THE PRESSURE OVER ALL SAID LAYER, AND THEREBY FORCIBLY EMBEDDING SAID CRYSTALS IN THE SUPPORT PLATE.
Claim 2
Dependent Claim
95 words
PROCESS OF MANUFACTURING AN ELECTRO-LUMINESCENT SCREEN, COMPRISING THE FOLLOWING STEPS: SPRAYING UNIFORMLY DIRECTLY ON THE SURFACE OF A SOFT METAL SUPPORT PLATE OF ALUMINUM, A THIN LAYER OF CRYSTALS OF A LUMINESCENT SUBSTANCE WHOSE HARDNESS IS GREATER THAN THAT OF THE SUBSTANCE OF SAID PLATE, APPLYING ON SAID LAYER A PRESSING PLATE OF A SUBSTANCE OF GREATER HARDNESS WITH RESPECT TO SAID CRYSTALS, AND APPLYING AT NORMAL TEMPERATURE A PRESSURE ON SAID PRESSING PLATE THEREBY DISTRIBUTING UNIFORMLY AND SIMULTANEOUSLY THE PRESSURE OVER ALL SAID LAYER, AND THEREBY FORCIBLY EMBEDDING SAID CRYSTALS IN THE SUPPORT PLATE.
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |