US2847330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for gas plating printing circuits
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1954-07-28
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Granted: 1958-08-12
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Expires: 1974-07-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:37
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/14; H05K3/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN THE METHOD OF MAKING PRINTED CIRCUITS BY THE DEPOSITION OF METAL FROM A GASEOUS METALLIC COMPOUND, FORMING A GRID-LIKE HEATISNG ELEMENT IN A PREDETERMINED CONDUCTIVE PATTERN, MOVING THE HEATING ELEMENT IN A SUBSTANTIALLY STRAIGHT LINE WITHIN A CHAMBER WHILE PROTECTING THE UPPER SURFACE OF THE HEATING ELEMENT FROM THE CHAMBER ATMOSPHERE POSITIONING A NON-CONDUCTOR BACKING SIMMEDIATELY ABOVE THE GRID DURING THE STRAIGHT LINE MOVEMENT THEREOF, PASSING AN ELECTRIC CURRENT THROUGH THE ELEMENT TO HEAT THE SAME TO THE DECOMPOSITION TEMPERATURE OF THE METAL TO BE DEPOSITED, AND INTRODUCING A GASEOUS METAL COMPOUND INTO THE CHAMBER TO ENABLE THE METAL TO BE DEPOSITED ON THE HEATED PORTIONS OF THE BACKING TO FORM A CONDUCTIVE PATTERN THEREON.
Claim 2
Dependent Claim
116 words
IN THE METHOD OF MAKING PRINTED CIRCUITS BY THE DEPOSITION OF METAL FROM A GASEOUS METALLIC COMPOUND, FORMING A GRID-LIKE HEATISNG ELEMENT IN A PREDETERMINED CONDUCTIVE PATTERN, MOVING THE HEATING ELEMENT IN A SUBSTANTIALLY STRAIGHT LINE WITHIN A CHAMBER WHILE PROTECTING THE UPPER SURFACE OF THE HEATING ELEMENT FROM THE CHAMBER ATMOSPHERE POSITIONING A NON-CONDUCTOR BACKING SIMMEDIATELY ABOVE THE GRID DURING THE STRAIGHT LINE MOVEMENT THEREOF, PASSING AN ELECTRIC CURRENT THROUGH THE ELEMENT TO HEAT THE SAME TO THE DECOMPOSITION TEMPERATURE OF THE METAL TO BE DEPOSITED, AND INTRODUCING A GASEOUS METAL COMPOUND INTO THE CHAMBER TO ENABLE THE METAL TO BE DEPOSITED ON THE HEATED PORTIONS OF THE BACKING TO FORM A CONDUCTIVE PATTERN THEREON.
References Cited (Backward Citations)
GB306902A
Cited
US2183302A
Cited
US2332309A
Cited
US2503758A
Cited
US2638423A
Cited
US2590557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |