US2724658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor coating method
Assignee: PPG Industries Inc
•
Filing: 1950-02-16
•
Granted: 1955-11-22
•
Expires: 1970-02-16
Abstract
No abstract record available.
Inventors
- 👤 William O Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; C; C03; C03C; C03C17/00; C03C17/001; C03C17/002; C23; C23C; C23C18/00; C23C18/02; C23C18/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METHOD OF PROVIDING A REFRACTORY SHEET WITH A NON-UNIFORM TRANSPARENT ELECTROCONDUCTIVE FILM BY APPLYING TO THE SHEET WHILE HOT A FILM FORMING COMPOSITION CAPABLE OF PRODUCING A TRANSPARENT ELECTROCONDUCTIVE FILM THEREON WHICH COMPRISES ESTABLISHING A SPRAY OF SAID COMPOSITION, HEATING THE SHEET TO BE SPRAYED TO A TEMPERATURE ABOVE 400* F. AND BELOW THE SOFTENING TEMPERATURES OF THE SHEET, ORIENTING SAID SHEET IN A PLANE PREPENDICULAR TO THE DIRECTION OF SPRAY, PASSING THE SHEET IN AN EDGEWISE DIRECTION THROUGH THE SPRAY, AND REMOVING THE SHEET FROM THE SPRAY BEFORE THE FILM THICKNESS EXCEEDS 800 MILLIMICRONS.
Claim 2
Dependent Claim
97 words
IN A METHOD OF PROVIDING A REFRACTORY SHEET WITH A NON-UNIFORM TRANSPARENT ELECTROCONDUCTIVE FILM BY APPLYING TO THE SHEET WHILE HOT A FILM FORMING COMPOSITION CAPABLE OF PRODUCING A TRANSPARENT ELECTROCONDUCTIVE FILM THEREON WHICH COMPRISES ESTABLISHING A SPRAY OF SAID COMPOSITION, HEATING THE SHEET TO BE SPRAYED TO A TEMPERATURE ABOVE 400* F. AND BELOW THE SOFTENING TEMPERATURES OF THE SHEET, ORIENTING SAID SHEET IN A PLANE PREPENDICULAR TO THE DIRECTION OF SPRAY, PASSING THE SHEET IN AN EDGEWISE DIRECTION THROUGH THE SPRAY, AND REMOVING THE SHEET FROM THE SPRAY BEFORE THE FILM THICKNESS EXCEEDS 800 MILLIMICRONS.
References Cited (Backward Citations)
US2061107A
Cited
US2429420A
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US2478817A
Cited
US2522531A
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US2569773A
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US2567331A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |