US2545200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing skiatronic screens
Assignee: Individual
•
Filing: 1945-10-24
•
Granted: 1951-03-13
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Expires: 1965-10-24
Abstract
No abstract record available.
Inventors
- 👤 Gorton R Fonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF PREPARING SKIATRONIC SCREENS CONSISTING ESSENTIALLY OF A FIRST STEP OF CONDENSATION ON THE GLASS AND WALLS OF A CATHODE RAY TUBE OF A FILM OF POTASSIUM CHLORIDE FROM A VAPOR THEREOF IN THE PRESENCE OF AN ATTENUATED GAS AT A PRESSURE OF FROM 20 TO ABOUT 100 MICRONS OF MERCURY AND A SECOND STEP OF CONDENSATION OF AND ADDITIONAL LAYER OF POTASSIUM CHLORIDE ON SAID FILM OF POTASSIUM CHLORIDE IN THE PESENCE OF WATER VAPOR AT A PRESSURE OF FROM 4.6 TO ABOUT 9.5 MILLIMETERS OF MERCURY WHEREBY SAID FIRST APPLIED FILM IS TRANSPARENT, THE COMPOSITE FILM STRUCTURE AFTER APPLICATION OF SAID ADDITIONAL LAYER OF POTASSIUM CHLORIDE IS TRANSLUCENT AND IS CHARACTERIZED BY A RELATIVELY SHARP CONTRAST BETWEEN THE SHADOW OF THE IMAGE DEVELOPED THEREON AND THE BACKGROUND.
Claim 2
Independent Claim
131 words
THE METHOD OF PREPARING SKIATRONIC SCREENS CONSISTING ESSENTIALLY OF A FIRST STEP OF CONDENSATION ON THE GLASS AND WALLS OF A CATHODE RAY TUBE OF A FILM OF POTASSIUM CHLORIDE FROM A VAPOR THEREOF IN THE PRESENCE OF AN ATTENUATED GAS AT A PRESSURE OF FROM 20 TO ABOUT 100 MICRONS OF MERCURY AND A SECOND STEP OF CONDENSATION OF AND ADDITIONAL LAYER OF POTASSIUM CHLORIDE ON SAID FILM OF POTASSIUM CHLORIDE IN THE PESENCE OF WATER VAPOR AT A PRESSURE OF FROM 4.6 TO ABOUT 9.5 MILLIMETERS OF MERCURY WHEREBY SAID FIRST APPLIED FILM IS TRANSPARENT, THE COMPOSITE FILM STRUCTURE AFTER APPLICATION OF SAID ADDITIONAL LAYER OF POTASSIUM CHLORIDE IS TRANSLUCENT AND IS CHARACTERIZED BY A RELATIVELY SHARP CONTRAST BETWEEN THE SHADOW OF THE IMAGE DEVELOPED THEREON AND THE BACKGROUND.
References Cited (Backward Citations)
US2008874A
Cited
US2355110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |