US3090888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube viewing screen for colour television
Assignee: SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd
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Filing: 1960-04-11
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Granted: 1963-05-21
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Oxenham John Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:39
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A VIEWING SCREEN FOR COLOUR TELEVISION COMPRISING A TRANSPARENT BASE, A SERIES OF GROUPS OF COLOUR STRIPES ON SAID BASE, EACH SAID GROUP COMPRISING A PLURALITY OF PARALLEL STRIPE EMITTING DIFFERENT COLOURS, EACH COLOUR STRIPE CONSISTING OF AN ACTIVATED CATHODOLUMINESCENT PHOSPHOR, A PLURALITY OF INDEXING STRIPES ON SAID BASE PARALLEL TO SAID COLOUR STRIPES, EACH INDEXING STRIPE CONSISTING OF AN INACTIVATED CATHODOLUMINESCENT PHOSPHOR, AN ELECTRICALLY DISCONTINUOUS COATING OF ELECTRICALLY CONDUCTING MATERIAL OVER SAID INDEXING STRIPES, AN ELECTRICALLY CONTINUOUS COATING OF SAID CONDUCTING MATERIAL OVER THE REMAINDER OF SAID SCREEN AND A LAYER OF HIGH SECONDARY ELECTRON EMISSIVITY OVER SAID COATINGS OF CONDUCTING MATERIAL.
Claim 2
Dependent Claim
103 words
A VIEWING SCREEN FOR COLOUR TELEVISION COMPRISING A TRANSPARENT BASE, A SERIES OF GROUPS OF COLOUR STRIPES ON SAID BASE, EACH SAID GROUP COMPRISING A PLURALITY OF PARALLEL STRIPE EMITTING DIFFERENT COLOURS, EACH COLOUR STRIPE CONSISTING OF AN ACTIVATED CATHODOLUMINESCENT PHOSPHOR, A PLURALITY OF INDEXING STRIPES ON SAID BASE PARALLEL TO SAID COLOUR STRIPES, EACH INDEXING STRIPE CONSISTING OF AN INACTIVATED CATHODOLUMINESCENT PHOSPHOR, AN ELECTRICALLY DISCONTINUOUS COATING OF ELECTRICALLY CONDUCTING MATERIAL OVER SAID INDEXING STRIPES, AN ELECTRICALLY CONTINUOUS COATING OF SAID CONDUCTING MATERIAL OVER THE REMAINDER OF SAID SCREEN AND A LAYER OF HIGH SECONDARY ELECTRON EMISSIVITY OVER SAID COATINGS OF CONDUCTING MATERIAL.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |