US3271512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television method and apparatus employing different sets of target phosphors, one of which luminesces in a single color and another of which luminesces in different colors
Assignee: Polaroid Corp
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Filing: 1965-10-12
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Granted: 1966-09-06
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Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Nigel W Daw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:44
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/30; H01J29/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
CATHODE-RAY TUBE MEANS COMPRISING A TARGET SCREEN HAVING TWO TYPES OF LUMINESCENT ELEMENTS ADAPTED TO EMIT LIGHT DIFFERENTIALLY IN RESPONSE TO DIFFERENCES IN IRRADIATION, ONE OF SAID TYPES OF ELEMENTS EMITTING LIGHT OF A PREDOMINANTLY REDDISH COLOR SUBSTANTIALLY IRRESPECTIVE OF VARIATIONS IN IRRADIATION CURRENT DENSITY, AND THE OTHER OF SAID TYPES OF ELEMENTS EMITTING LIGHT HAVING A RELATIVELY BLUISH HUE IN RESPONSE TO A RELATIVELY LOW IRRADIATION CURRENT DENSITY AND A RELATIVELY YELLOWISH HUE IN RESPONSE TO A RELATIVELY HIGH IRRADIATION CURRENT DENSITY.
Claim 2
Dependent Claim
83 words
CATHODE-RAY TUBE MEANS COMPRISING A TARGET SCREEN HAVING TWO TYPES OF LUMINESCENT ELEMENTS ADAPTED TO EMIT LIGHT DIFFERENTIALLY IN RESPONSE TO DIFFERENCES IN IRRADIATION, ONE OF SAID TYPES OF ELEMENTS EMITTING LIGHT OF A PREDOMINANTLY REDDISH COLOR SUBSTANTIALLY IRRESPECTIVE OF VARIATIONS IN IRRADIATION CURRENT DENSITY, AND THE OTHER OF SAID TYPES OF ELEMENTS EMITTING LIGHT HAVING A RELATIVELY BLUISH HUE IN RESPONSE TO A RELATIVELY LOW IRRADIATION CURRENT DENSITY AND A RELATIVELY YELLOWISH HUE IN RESPONSE TO A RELATIVELY HIGH IRRADIATION CURRENT DENSITY.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |