Patent US4844053A successfully refreshed from Google Patents.
Patent US3690929A successfully refreshed from Google Patents.
US3690929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of phosphor slurries
Assignee: Individual
•
Filing: 1970-01-15
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Granted: 1972-09-12
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Expires: 1990-01-15
Abstract
Abstract THE PHOTOSENITIVE PROPERTIES AND STABILITY OF PHOSPHOR SLURRIES USED IN PHOTOPRINTING ARE IMPROVED BY MAKING A SLIGHTLY SOLUBLE ACIDIC OXIDE CO-EXIST WITH A PHOSPHOR ADAPTED FOR BEING APPLIED TO THE INNER SURFACE OF A CATHODE RAY TUBE SUBSTANTIALLY IN CLOSE CONTACT WITH THE SURFACE OF THE PHOSPHOR PARTICLES, SAID ACIDIC OXIDE BEING OXIDES OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF BORON, VANADIUM, GALLIUM, GERMANIUM, ARSENIC, NIOBIUM, MOLYBDENUM, ANTIMONY, TANTALUM AND TUNGSTEN.
Inventors
- 👤 Yoshiyuki Yokota
- 👤 Takashi Miyagawa
- 👤 Yasuto Tanaka
- 👤 Tatuki Torii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:33
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/56; C09K11/562; C09K11/565; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271
Claims Analysis
Total Claims: 0
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |