US3582326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic process for forming a light intensity correcting filter used in exposing a color crt screen
Assignee: GTE Sylvania Inc
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Filing: 1968-09-27
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Granted: 1971-06-01
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Expires: 1988-09-27
Abstract
Abstract A PHOTOGRAPHIC PROCESS FOR FORMING LIGHT ATTENUATION MEANS ON AN OPTICAL COMPONENT POSITIONED IN AN OPTICAL SYSTEM USED FOR EXPOSING A COLOR CRT SCREEN, SAID COMPONENT BEING POSITIONED INTERMEDIATE A LIGHT SOURCE AND SAID SCREEN. THE DESIRED ATTENUATION CHARACTERISTICS ARE FORMED BY EXPOSING AND DEVELOPING A PHOTOGRAPHIC EMULSION COATED ON SAID COMPONENT, THE EXPOSURE BEING MADE USING RADIATION FROM THE SAME SOURCE WHICH WILL EVENTUALLY BE ATTENUATED BY THE RESULTANT METALLIC COATING ON THE OPTICAL COMPONENT.
Inventors
- 👤 Harry E Smithgall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:11
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |