US2819183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent screens
Assignee: EIDP Inc
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Filing: 1955-05-31
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Granted: 1958-01-07
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Alles Francis Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:20
CPC Classifications
G; G21; G21K; G21K4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31511; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A FLUORESCENT SCREEN COMPRISING A SHEET SUPPORT HAVING ON AT LEAST ONE SURFACE A FLEXIBLE LAYER OF FINELY DIVIDED PARTICLES OF A PHOSPHOR DISPERSED IN A CHLOROSULFONATED ADDITION POLYMER OF AN OLEFIN CONTAINING 1 TO 2 OLEFINIC BONDS AND NOT MORE THAN 5 CARBON ATOMS.
Claim 2
Dependent Claim
45 words
A FLUORESCENT SCREEN COMPRISING A SHEET SUPPORT HAVING ON AT LEAST ONE SURFACE A FLEXIBLE LAYER OF FINELY DIVIDED PARTICLES OF A PHOSPHOR DISPERSED IN A CHLOROSULFONATED ADDITION POLYMER OF AN OLEFIN CONTAINING 1 TO 2 OLEFINIC BONDS AND NOT MORE THAN 5 CARBON ATOMS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |