Patent US2873189A successfully refreshed from Google Patents.
US2873189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube screen process
Assignee: GTE Sylvania Inc
•
Filing: 1956-02-24
•
Granted: 1959-02-10
•
Expires: 1976-02-24
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Evans
- 👤 Buff Hugh P La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:07
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A PROCESS OF MAKING A SCREEN FOR AN IMAGE REPRODUCTION DEVICE HAVING A VIEWING PANEL, THE STEPS COMPRISING FORMING A FLOURESCENT MATERIAL LAYER ON SAID PANEL, DEPOSITION A SENSITIZED LIGHT HARDENABLE COMPOSITION ATOP SAID LAYER, EXPOSING SAID COMPOSITION TO LIGHT THROUGH A PATTERN NEGATIVE FROM THE COMPOSITION COATED SIDE OF SAID PANEL, VAPORIZING MAGNESIUM ONTO SAID COMPOSITION, DEVELOPING THE EXPOSED LIGHT HARDENABLE COMPOSITION AND ADHERING MAGNESIUM PATTERN BY REMOVING THE UNEXPOSED PORTIONS OF SAID COMPOSITION, AND SUBSEQUENTLY OZIDIZING SAID MAGNESIUM.
Claim 2
Dependent Claim
81 words
IN A PROCESS OF MAKING A SCREEN FOR AN IMAGE REPRODUCTION DEVICE HAVING A VIEWING PANEL, THE STEPS COMPRISING FORMING A FLOURESCENT MATERIAL LAYER ON SAID PANEL, DEPOSITION A SENSITIZED LIGHT HARDENABLE COMPOSITION ATOP SAID LAYER, EXPOSING SAID COMPOSITION TO LIGHT THROUGH A PATTERN NEGATIVE FROM THE COMPOSITION COATED SIDE OF SAID PANEL, VAPORIZING MAGNESIUM ONTO SAID COMPOSITION, DEVELOPING THE EXPOSED LIGHT HARDENABLE COMPOSITION AND ADHERING MAGNESIUM PATTERN BY REMOVING THE UNEXPOSED PORTIONS OF SAID COMPOSITION, AND SUBSEQUENTLY OZIDIZING SAID MAGNESIUM.
References Cited (Backward Citations)
US1306904A
Cited
US2625734A
Cited
US2758942A
Cited
US2690519A
Cited
US2769733A
Cited
US2790167A
Cited
US2756167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |