US2537262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent zinc fluoride and method of preparing same
Assignee: GTE Sylvania Inc
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Filing: 1946-06-12
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Granted: 1951-01-09
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Expires: 1966-06-12
Abstract
No abstract record available.
Inventors
- 👤 Bennett S Ellefson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/20; C; C09; C09K; C09K11/00; C09K11/08; C09K11/59; C09K11/61; C09K11/615; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/258; Y10T428/259; Y10T428/31504; Y10T428/31551; Y10T428/31623
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A LUMINESCENT SCREEN CONSISTING OF A GLASS SUPPORT TO WHICH ARE ATTACHED CRYSTAL PARTICLES OF DIMENSIONS OF THE ORDER OF 2-4 MICRONS CONSISTING OF 94.5% BY WEIGHT OF ZINC FLUORIDE, 4% BY WEIGHT OF SILICIC ACID, AND 1.5% BY WEIGHT OF MANGANESE FLUORIDE.
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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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |