US2804403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing target screens for orthicon tubes
Assignee: Individual
•
Filing: 1954-01-15
•
Granted: 1957-08-27
•
Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 John E Clemens
- 👤 Ben B Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:39
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J9/00; H01J9/20; H01J9/233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE PROCESS OF PREPARING A TARGET PLATE FOR ORTHICON TUBES AND OTHER ELECTRONIC DEVICES WHICH COMPRISES COATING ONE SIDE OF A METALLIC SCREEN WITH A SLURRY OF A HEATRESISTING ELECTRICALLY INSULATING SUBSTANCE IN A VOLATILE LIQUID VEHICLE, EVAPORATING THE VEHICLE, COATING THE UNTREATED SIDE OF THE SCREEN WITH A SOLUTION OF AN EASILY SOLUBLE LACUER TO CLOSE THE SCREEN MESHES DEPOSITING THROUGH A SECOND SCREEN A THIN FILM OF A HIGHLY ELECTRICALLY CONDUCTIVE MALLEABLE METAL OVER THE HEAT-RESISTING, ELECTRICALLY INSULATING SUBSTANCE AND OVER THE LACQUER, AFTER THE LATTER HAS A DRIED TO A FILM, WHEREBY TO CLOSE COMPLETELY THE MESHES OF THE SCREEN WHILE PRESERVING UNCOATED THE HEAT-RESISTING ELECTRICALLY INSULATING SUBSTANCE, AND THEN REMOVING THE LACQUER..
Claim 2
Dependent Claim
116 words
THE PROCESS OF PREPARING A TARGET PLATE FOR ORTHICON TUBES AND OTHER ELECTRONIC DEVICES WHICH COMPRISES COATING ONE SIDE OF A METALLIC SCREEN WITH A SLURRY OF A HEATRESISTING ELECTRICALLY INSULATING SUBSTANCE IN A VOLATILE LIQUID VEHICLE, EVAPORATING THE VEHICLE, COATING THE UNTREATED SIDE OF THE SCREEN WITH A SOLUTION OF AN EASILY SOLUBLE LACUER TO CLOSE THE SCREEN MESHES DEPOSITING THROUGH A SECOND SCREEN A THIN FILM OF A HIGHLY ELECTRICALLY CONDUCTIVE MALLEABLE METAL OVER THE HEAT-RESISTING, ELECTRICALLY INSULATING SUBSTANCE AND OVER THE LACQUER, AFTER THE LATTER HAS A DRIED TO A FILM, WHEREBY TO CLOSE COMPLETELY THE MESHES OF THE SCREEN WHILE PRESERVING UNCOATED THE HEAT-RESISTING ELECTRICALLY INSULATING SUBSTANCE, AND THEN REMOVING THE LACQUER..
References Cited (Backward Citations)
US2237681A
Cited
US2579772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |