Patent US3821610A successfully refreshed from Google Patents.
US3821610A
Expired / Lapsed
US
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Thick film circuitry
Assignee: ELECTRONIC CO Ltd AB
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Filing: 1973-02-27
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Granted: 1974-06-28
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Expires: 1993-02-27
Abstract
Abstract In order to provide screening to prevent unwanted coupling between components on opposite sides of a thick film substrate circuit element, components on one side are located directly opposite printed earth areas of components in the other side.
Inventors
- 👤 T Harcombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:24
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/16; H05K1/167; H10; H10D; H10D86/00; H10D86/80; H10D86/85; H05K1/09; H05K1/092; H05K2201/00; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K2201/09; H05K2201/09209; H05K2201/0929; H05K2201/093; H05K2201/09318; H05K2201/09654; H05K2201/09663
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A thick film circuit element comprising a substrate having a transmission line on a first side of said substrate including at least one component, earth areas printed in conductive ink on the same side of said substrate as said transmission line, said earth areas being located adjacent said transmission line and coplanar therewith, and additional components printed in conductive ink on the other side of said substrate located directly opposite a said earth area, thereby providing screening between said additional components on said other side of said substrate and said transmission line on said first side in order to prevent unwanted coupling therebetween.
Claim 2
Dependent Claim
103 words
A thick film circuit element comprising a substrate having a transmission line on a first side of said substrate including at least one component, earth areas printed in conductive ink on the same side of said substrate as said transmission line, said earth areas being located adjacent said transmission line and coplanar therewith, and additional components printed in conductive ink on the other side of said substrate located directly opposite a said earth area, thereby providing screening between said additional components on said other side of said substrate and said transmission line on said first side in order to prevent unwanted coupling therebetween.
Claim 3
Dependent Claim
24 words
A thick film circuit element as claimed in claim 1, in which the component associated with the earth areas is a resonant transmission line.
Claim 4
Dependent Claim
21 words
A thick film circuit element as claimed in claim 1, including connections between the components on opposite sides of the substrate.
Claim 5
Dependent Claim
18 words
A thick film circuit element as claimed in claim 3, in which the connections pass through the substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |