US2841505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing cathode-ray tubes
Assignee: Rauland Borg Corp
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Filing: 1956-08-03
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Granted: 1958-07-01
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Expires: 1976-08-03
Abstract
No abstract record available.
Inventors
- 👤 Adolph W Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF IMPROVING THE CROSS-BURN RESISTANCE OF OA LUMINESCENT SCREEN DEPOSITED ONTO THE FACEPLATE OF A CATHODE-RAY TUBE BULB, SAID METHOD OF COMPRISING: PLACING SAID BULB IN AN UPRIGHT POSITION WITH SAID FACEPLATE UPPER MOST, INTRODUCING A COULD, HAVING SILICON DIOXIDE PARTICLES SUSPENDED THEREIN, INTO SAID CATHODE-RAY TUBE BULB, INVERTING SAID CATHODE-RAY TUBE BULB, AND RETAINING SAID CLOUD IN SAID INVERTED BULB FOR A PERIOD OF TIME SUFFICIENT TO PERMIT SAID SILICON DIOXIDE PARTICLES TO SETTLE OUT OF SAID CLOUD ONTO SAID DEPOSITED LUMINSCENT SCREEN.
Claim 2
Independent Claim
86 words
A METHOD OF IMPROVING THE CROSS-BURN RESISTANCE OF OA LUMINESCENT SCREEN DEPOSITED ONTO THE FACEPLATE OF A CATHODE-RAY TUBE BULB, SAID METHOD OF COMPRISING: PLACING SAID BULB IN AN UPRIGHT POSITION WITH SAID FACEPLATE UPPER MOST, INTRODUCING A COULD, HAVING SILICON DIOXIDE PARTICLES SUSPENDED THEREIN, INTO SAID CATHODE-RAY TUBE BULB, INVERTING SAID CATHODE-RAY TUBE BULB, AND RETAINING SAID CLOUD IN SAID INVERTED BULB FOR A PERIOD OF TIME SUFFICIENT TO PERMIT SAID SILICON DIOXIDE PARTICLES TO SETTLE OUT OF SAID CLOUD ONTO SAID DEPOSITED LUMINSCENT SCREEN.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |