US4429344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive foils for solid dielectric capacitor
Assignee: CORNELL-DUBIILIER MARKETING Inc
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Filing: 1982-05-14
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Granted: 1984-01-31
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Expires: 2002-05-14
Abstract
Abstract Electrical contact between foil electrodes and conductive coated plates in a solid dielectric capacitor is improved by coating or embossing the foil electrodes with a conductive particulate material.
Inventors
- 👤 Boyce D. Whitman
- 👤 Robert F. Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
In a method of forming a solid dielectric capacitor having at least one foil-type electrode and a conductive layer provided on said dielectric acting as a plate for said capacitor, the improvement comprising: applying a conductive particulate material between said electrode and said capacitor plate; and bonding said electrode to said capacitor plate.
Claim 2
Dependent Claim
53 words
In a method of forming a solid dielectric capacitor having at least one foil-type electrode and a conductive layer provided on said dielectric acting as a plate for said capacitor, the improvement comprising: applying a conductive particulate material between said electrode and said capacitor plate; and bonding said electrode to said capacitor plate.
Claim 3
Dependent Claim
21 words
The method of claim 1, wherein said conductive particulate material is coated with a bonding agent prior to said application step.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein said application step is performed by spraying or dipping said particulate material on said foil electrode.
Claim 5
Dependent Claim
26 words
The method of either claim 1 or 3 further including the step of embossing said particulate material into said foil electrode subsequent to said application step.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein said conductive particulate material is irregular in shape.
Claim 7
Dependent Claim
60 words
In a capacitor having at least one solid dielectric layer, a conductive layer formed on either side of said dielectric acting as plates for said capacitor, and foil-type electrodes associated with each of said capacitor plates, the improvement comprising: a conductive particulate material applied between each said foil electrode and each said capacitor plate, whereby electrical contact is improved therebetween.
Claim 8
Dependent Claim
60 words
In a capacitor having at least one solid dielectric layer, a conductive layer formed on either side of said dielectric acting as plates for said capacitor, and foil-type electrodes associated with each of said capacitor plates, the improvement comprising: a conductive particulate material applied between each said foil electrode and each said capacitor plate, whereby electrical contact is improved therebetween.
Claim 9
Dependent Claim
16 words
The capacitor of claim 6 wherein said particulate material is embossed into each said foil electrode.
Claim 10
Dependent Claim
17 words
The capacitor of either claim 6 or 7 wherein said conductive particulate material is irregular in shape.
Claim 11
Dependent Claim
29 words
The capacitor of either claim 6 or 7 wherein said particulate material is coated with an adhesive bonding agent to aid in bonding said foil electrode to said plate.
Claim 12
Dependent Claim
23 words
The capacitor of claim 9 wherein said bonding agent is chosen from the group of varnish, epoxy, or acrylic adhesive, or mixtures thereof.
Claim 13
Dependent Claim
22 words
The capacitor of claim 9 wherein the weight ratio of conductive particulate material to bonding agent ranges from approximately 1:99 to 99:1.
Claim 14
Dependent Claim
34 words
The capacitor of claim 9 wherein the conductive particulate material is silver, the bonding agent is epoxy resin, and the weight ratio of conductive particulate material to bonding agent is approximately 8.6 to 1.
Claim 15
Dependent Claim
28 words
The capacitor of claim 6 wherein said conductive particulate material is chosen from the group consisting of silver, copper, gold, iron, carbon, indium or electrically conductive alloys thereof.
Claim 16
Dependent Claim
19 words
The capacitor of claim 6, wherein said particulate material ranges in size from approximately 1 micron to 1300 microns.
Claim 17
Dependent Claim
17 words
The capacitor of claim 6, wherein the average size of said particulate material is approximately 10 microns.
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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |