US3080231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for photographically forming color screens
Assignee: CBS Broadcasting Inc
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Filing: 1953-10-20
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Granted: 1963-03-05
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Expires: 1973-10-20
Abstract
No abstract record available.
Inventors
- 👤 Lindsey R Perry
- 👤 William E Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:48
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR FORMING A LUMINESCENT SCREEN IN A COLOR TELEVISION PICTIRE TUBE OF THE CURVED SCREEN-CURVED MASK TYPE, SAID CRUVED MASK HAVING A PLURALITY OF CIRCULAR APERTURES SYMMETRICALLY FORMED IN SUBSTANTIALLY ITS ENTIRE SURFACE, COMPRISING THE STEPS OF SETTLING PHOSPHORS THROUGH A LIQUID CUSHION ON TO THE INTERIOR SURFACE OF THE SCREEN END OF SAID TUBE, PREMEATING A WATER SOLUBLE PHOTOSENSITIVE RESIST MATERIAL THROUGH SAID PHOSPHORS, EXPOSING PREDETERMINED PORTIONS OF THE AREAS OF SAID PHOTOSENSITIVE RESIST MATERIAL AND OF SAID PHOSPHORS TO LIGHT THROUGH SAID CURVED MASK, AND DEVELOPING AND WASHING AWAY UNEXPOSED AREA OF SAID PHOTOSENSITIVE RESIST MATERIAL AND OF SAID PHOSPHORS FROM SAID SCREEN SURFACE.
Claim 2
Dependent Claim
108 words
A PROCESS FOR FORMING A LUMINESCENT SCREEN IN A COLOR TELEVISION PICTIRE TUBE OF THE CURVED SCREEN-CURVED MASK TYPE, SAID CRUVED MASK HAVING A PLURALITY OF CIRCULAR APERTURES SYMMETRICALLY FORMED IN SUBSTANTIALLY ITS ENTIRE SURFACE, COMPRISING THE STEPS OF SETTLING PHOSPHORS THROUGH A LIQUID CUSHION ON TO THE INTERIOR SURFACE OF THE SCREEN END OF SAID TUBE, PREMEATING A WATER SOLUBLE PHOTOSENSITIVE RESIST MATERIAL THROUGH SAID PHOSPHORS, EXPOSING PREDETERMINED PORTIONS OF THE AREAS OF SAID PHOTOSENSITIVE RESIST MATERIAL AND OF SAID PHOSPHORS TO LIGHT THROUGH SAID CURVED MASK, AND DEVELOPING AND WASHING AWAY UNEXPOSED AREA OF SAID PHOTOSENSITIVE RESIST MATERIAL AND OF SAID PHOSPHORS FROM SAID SCREEN SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |