US2907619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing cathode ray tubes, more particularly television picture tubes
Assignee: US Philips Corp
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Filing: 1957-09-30
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Granted: 1959-10-06
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Groot Theodorus Cornelis
- 👤 Janssen Johannes Cornelis
- 👤 Stephenson Joseph Dodds
- 👤 Blackler Francis Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/244; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF MANUFACTURING A CATHODE-RAY TUBE WITH A METAL-BACKED, PHOSPHOR SCREEN, COMPRISING THE STEPS OF PROVIDING AN ORGANIC INTERMEDIATE LAYER ON THE PHOSPHOR SCREEN AND ON A METAL-BACKING LAYER ON THE ORGANIC LAYER, THEREAFTER ASSEMBLING THE TUBE WITH AN ELECTRON GUN IN POSITION THEREIN WHILE THE ORGANIC LAYER REMAINS ON THE SCREEN, THEREAFTER HEATING THE TUBE IN AN OXYGENCONTAINING ATMOSPHERE AND AT A TEMPERATURE AT WHICH THE ORGANIC LAYER IS COMBUSTED AND ELIMINATED, IMMEDIATELY THEREAFTER EVACUATING THE TUBE WHILE THE HEATING IS CONTINUED TO OUTGAS ITS ELEMENTS, AND THEREAFTER ACTIVATING THE CATHODE.
Claim 2
Independent Claim
93 words
A METHOD OF MANUFACTURING A CATHODE-RAY TUBE WITH A METAL-BACKED, PHOSPHOR SCREEN, COMPRISING THE STEPS OF PROVIDING AN ORGANIC INTERMEDIATE LAYER ON THE PHOSPHOR SCREEN AND ON A METAL-BACKING LAYER ON THE ORGANIC LAYER, THEREAFTER ASSEMBLING THE TUBE WITH AN ELECTRON GUN IN POSITION THEREIN WHILE THE ORGANIC LAYER REMAINS ON THE SCREEN, THEREAFTER HEATING THE TUBE IN AN OXYGENCONTAINING ATMOSPHERE AND AT A TEMPERATURE AT WHICH THE ORGANIC LAYER IS COMBUSTED AND ELIMINATED, IMMEDIATELY THEREAFTER EVACUATING THE TUBE WHILE THE HEATING IS CONTINUED TO OUTGAS ITS ELEMENTS, AND THEREAFTER ACTIVATING THE CATHODE.
References Cited (Backward Citations)
US2342550A
Cited
US2464702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |