Patent US2790731A successfully refreshed from Google Patents.
US2790731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the production of electrically resistant films
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1953-12-14
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Granted: 1957-04-30
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Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Ostrofsky Bernard
- 👤 Ballard James William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A GAS PLATING PROCESS WHICH COMPRISES THE STEPS OF INTRODUCING VOLATILIZED CHROMIUM HEXACARBONYL AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE THEREOF INTO A PLATING CHAMBER INTO CONTACT WITH A CERAMIC BASE TO BE PLATED, HEATING THE BASE TO THE DECOMPOSITION TEMPERATURE OF CHROMIUM HEXACARBONYL TO CAUSE A FILM TO BE DEPOSITED ON SAID BASE BY THERMAL DECOMPOSITION OF THE CARBONYL, AND DURING THE DECOMPOSITION SURROUNDING THE PLATING CHAMBER WITH A FLUID MEDIUM HEATED TO A TEMPERATURE OF APPROXIMATELY 100*C. AND ABOVE THE VOLATILIZATION TEMPERATURE OF THE CARBONYL.
Claim 2
Dependent Claim
87 words
A GAS PLATING PROCESS WHICH COMPRISES THE STEPS OF INTRODUCING VOLATILIZED CHROMIUM HEXACARBONYL AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE THEREOF INTO A PLATING CHAMBER INTO CONTACT WITH A CERAMIC BASE TO BE PLATED, HEATING THE BASE TO THE DECOMPOSITION TEMPERATURE OF CHROMIUM HEXACARBONYL TO CAUSE A FILM TO BE DEPOSITED ON SAID BASE BY THERMAL DECOMPOSITION OF THE CARBONYL, AND DURING THE DECOMPOSITION SURROUNDING THE PLATING CHAMBER WITH A FLUID MEDIUM HEATED TO A TEMPERATURE OF APPROXIMATELY 100*C. AND ABOVE THE VOLATILIZATION TEMPERATURE OF THE CARBONYL.
References Cited (Backward Citations)
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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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |