US3683245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic printed capacitor
Assignee: EIDP Inc
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Filing: 1971-12-01
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Granted: 1972-08-08
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Expires: 1991-12-01
Abstract
Abstract A printed capacitor is made hermetic by providing a hole through the substrate to permit electrical connection of the bottom electrode to the opposite side of the substrate, thereby allowing the top electrode to seal completely to the substrate and to be hermetically sealed by a solder coating. Preferred embodiments provide a second hole through the substrate permitting both of the electrical connections to be on the same side of the substrate.
Inventors
- 👤 Rudolph John Bacher
- 👤 Takashi Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/224
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
In a hermetically sealed electrical capacitor comprising a nonconductive substrate, a first electrode coated on a first side of said substrate, a dielectric layer coated on and completely overlapping said first electrode, a second electrode coated on said dielectric layer, and a layer of solder on said second electrode, the improvement comprising: a. said dielectric layer being completely covered with said second electrode, b. said second electrode being completely covered with solder, sealing it to said substrate, and c. at least one hole being provided through said substrate and connecting to said first electrode, with electrically conductive means provided through said hole for electrically connecting to said first electrode from the side of said substrate opposite to said first side.
Claim 2
Dependent Claim
120 words
In a hermetically sealed electrical capacitor comprising a nonconductive substrate, a first electrode coated on a first side of said substrate, a dielectric layer coated on and completely overlapping said first electrode, a second electrode coated on said dielectric layer, and a layer of solder on said second electrode, the improvement comprising: a. said dielectric layer being completely covered with said second electrode, b. said second electrode being completely covered with solder, sealing it to said substrate, and c. at least one hole being provided through said substrate and connecting to said first electrode, with electrically conductive means provided through said hole for electrically connecting to said first electrode from the side of said substrate opposite to said first side.
Claim 3
Dependent Claim
84 words
An electrical capacitor according to claim 1 in which there is also provided another hole through said substrate at a location separatEd from said conductive and dielectric coatings, with electrically conductive means between said hole and said other hole, electrically conductive means through said other hole, and electrical contact means at the end of said other hole on said first side of said substrate, to permit electrical contact to both said first electrode and said second electrode from said first side of said substrate.
Claim 4
Dependent Claim
32 words
An electrical capacitor according to claim 2 in which the exposed surfaces of said electrically conductive means and said electric contact means are completely covered with solder, sealing them to said substrate.
Claim 5
Dependent Claim
34 words
An electrical capacitor according to claim 2 in which said dielectric material is sensitive to moisture and in which said electrode, electrically conductive means and electrode means are sintered metal powder and glass frit.
Claim 6
Dependent Claim
68 words
An electrical capacitor according to claim 1 in which another hole is provided through said substrate electrically connecting with said second electrode, with electrically conductive means through said other hole and electrical contact means at the end of said other hole on said opposite side of said substrate, to permit electrical contact with both said first electrode and said second electrode from said opposite side of said substrate.
Claim 7
Dependent Claim
27 words
An electrical capacitor according to claim 5 in which the exposed surfaces of said electrical contact means are completely covered with solder, sealing them to said substrate.
Claim 8
Dependent Claim
34 words
An electrical capacitor according to claim 5 in which said dielectric material is sensitive to moisture and in which said electrode, electrically conductive means and electrode means are sintered metal powder and glass frit.
References Cited (Backward Citations)
US3267342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |