Patent US4785998A successfully refreshed from Google Patents.
US3710195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit board having a thermally insulated resistor
Assignee: Sony Corp
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Filing: 1971-02-12
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Granted: 1973-01-09
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Expires: 1991-02-12
Abstract
Abstract A printed circuit board comprising a resistor on the surface that receives molten solder. The resistor has a heat shielding layer on it and may also have connections of low heat conductivity material to the conductive circuit on the board.
Inventors
- 👤 T Sada
- 👤 N Tsuchiya
- 👤 T Amamiya
- 👤 Y Kaneda
- 👤 K Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:33
CPC Classifications
H; H01; H01C; H01C7/00; H05; H05K; H05K1/00; H05K1/16; H05K1/167; H05K1/02; H05K1/0201; H05K1/09; H05K1/092; H05K1/095; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/035; H05K2201/06; H05K2201/062; H05K2203/00; H05K2203/14; H05K2203/1461; H05K3/00; H05K3/22; H05K3/28; H05K3/30; H05K3/32; H05K3/34; H05K3/3447; H05K3/3452; H05K3/3465; H05K3/3468; H05K3/38; H05K3/386
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
The printed circuit of claim 1 in which said heat insulating layer extends completely over said resistor and said first and second layers of electrically conductive material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |