US3222172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making color television picture tubes
Assignee: CBS Broadcasting Inc
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Filing: 1955-04-27
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Granted: 1965-12-07
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Giuffrida Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:16
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J29/003; H01J31/00; H01J31/08; H01J31/10; H01J31/20; H01J31/201; H01J31/203; H01J31/205; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272; H01J2229/00; H01J2229/0007; H01J2229/003; H01J2229/56; H01J2229/568; H01J2229/5681; H01J2229/5687
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
THE METHOD OF PHOTOGRAPHICALLY FORMING THE IMAGE OF A SHADOW MASK ON A PHOTOSENSITIZED MATERIAL DISPOSED ON THE VIEWING END OF A COLOR TELEVISION PICTURE TUBE HAVING AT LEAST ONE ELECTRON BEAM PRODUCING SOURCE THEREIN CAPABLE OF PRODUCING AN ELECTRON BEAM WITHIN AND SUBJECT TO THE EARTH''S MAGNETIC FIELD AND DEFLECTION MEANS FOR SAID ELECTRON BEAM OPERATIVE ON AN ELECTRON BEAM DEFLECTION PLANE, INCLUDING THE STEPS OF EXPOSING SAID PHOTOSENSITIZED MATERIAL TO LIGHT FROM A LIGHT SOURCE THROUGH THE APERTURES IN SAID SHADOW MASK TO FORM SAID IMAGE, SAID LIGHT SOURCE BEING DISPOSED AT A PREDETERMINED POINT IN SAID ELECTRON BEAM DEFLECTION PLANE, SAID POINT BEING DISPLACED A PREDETERMINED DISTANCE FROM THE INTERSECTION OF SAID ELETRON BEAM WITH SAID ELECTRON BEAM DEFLECTION PLANE, IN AN AMOUNT SUFFICIENT AND OPPOSITE TO THE OFFSET OF SAID ELECTRON BEAM ON SAID VIEWING SCREEN TO COMPENSATE FOR THE EFFECT OF THE EARTH''S MAGNETIC FIELD ON THE TRAJECTORY OF SAID ELECTRON BEAM AND RE,OVING THE UNEXPOSED PHOTOSENSITIZED MATERIAL FROM SAID VIEWING END.
Claim 2
Independent Claim
167 words
THE METHOD OF PHOTOGRAPHICALLY FORMING THE IMAGE OF A SHADOW MASK ON A PHOTOSENSITIZED MATERIAL DISPOSED ON THE VIEWING END OF A COLOR TELEVISION PICTURE TUBE HAVING AT LEAST ONE ELECTRON BEAM PRODUCING SOURCE THEREIN CAPABLE OF PRODUCING AN ELECTRON BEAM WITHIN AND SUBJECT TO THE EARTH''S MAGNETIC FIELD AND DEFLECTION MEANS FOR SAID ELECTRON BEAM OPERATIVE ON AN ELECTRON BEAM DEFLECTION PLANE, INCLUDING THE STEPS OF EXPOSING SAID PHOTOSENSITIZED MATERIAL TO LIGHT FROM A LIGHT SOURCE THROUGH THE APERTURES IN SAID SHADOW MASK TO FORM SAID IMAGE, SAID LIGHT SOURCE BEING DISPOSED AT A PREDETERMINED POINT IN SAID ELECTRON BEAM DEFLECTION PLANE, SAID POINT BEING DISPLACED A PREDETERMINED DISTANCE FROM THE INTERSECTION OF SAID ELETRON BEAM WITH SAID ELECTRON BEAM DEFLECTION PLANE, IN AN AMOUNT SUFFICIENT AND OPPOSITE TO THE OFFSET OF SAID ELECTRON BEAM ON SAID VIEWING SCREEN TO COMPENSATE FOR THE EFFECT OF THE EARTH''S MAGNETIC FIELD ON THE TRAJECTORY OF SAID ELECTRON BEAM AND RE,OVING THE UNEXPOSED PHOTOSENSITIZED MATERIAL FROM SAID VIEWING END.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |