US3766443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High molecular weight semi-solid electrolytic capacitor
Assignee: Panasonic Holdings Corp
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Filing: 1972-06-23
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Granted: 1973-10-16
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Expires: 1992-06-23
Abstract
Abstract This invention is directed to a semi-solid electrolytic capacitor and a method for fabricating the same. The semi-solid electrolytic capacitor comprises an anode electrode having an oxide film thereon, a cathode electrode and a semi-solid electrolyte intervening between the anode electrode and the cathode electrode and acting both as an electrolyte and a spacer. The anode electrode is substantially surrounded on both sides thereof by the cathode electrode and is spaced therefrom. The method comprises assembling an anode electrode and a cathode electrode, immersing the electrodes in an electrolyte comprising an ionogen, an organic solvent and a cross-linkable polyamide resin, and heating the electrolyte at a temperature of from 80* to 120*C for 0.5 to 1 hour to form a semi-solid electrolytic capacitor.
Inventors
- 👤 K Hasegawa
- 👤 S Asakawa
- 👤 S Nishiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A high molecular weight semi-solid electrolytic capacitor according to claim 1, wherein said cross-linked polyamide resin is selected from the group consisting of N-methylol 6-nylon, N-methylol 6, 6-nylon, N-methylol polyacrylamide, N-alkoxymethyl 6 nylon, N-alkoxymethyl 6, 6 nylon, N-alkoxymethyl polyacrylamide and derivatives thereof; said solvent is selected from the group consisting of dimethylformamide, dimethylacetoamide, methyl cellosolve, ethyl cellosolve, dimethyl sufoxide and gamma -butyrolactone; and said ionogen is at least one compound selected from the group consisting of ammonium picrate, ammonium-p-nitrophenolate, ammonium-p-dinitrophenolate, triethanol-p-nitrophenolate, calcium-p-nitrophenolate and barium-p-nitrophenolate, picric acid, picamic acid, styphnic acid, nitrophenol and dinitrophenol, and alkaline earth metal salts thereof.
Claim 2
Dependent Claim
35 words
A high molecular weight semi-solid electrolytic capacitor according to claim 1, wherein said semi-solid electrolyte is a mixture of 0.5 g N-methylol 6-nylon, 4 ml. dimethylformamide, 1 g. ammonium picrate and 0.1 g. picric acid.
Claim 3
Dependent Claim
38 words
A high molecular weight semi-solid electrolytic capacitor according to claim 1, wherein said cathode is in the form of box-shaped electrode and said anode is a plane element coated with an oxide film surrounded by said cathode electrode.
Claim 4
Dependent Claim
34 words
A high molecular weight semi-solid electrolytic capacitor according to claim 1, wherein said cathode is U-shaped and said anode is a plane element located between and parallel to the parallel portions of said cathode.
Claim 5
Dependent Claim
30 words
A high molecular weight semi-solid electrolytic capacitor according to claim 1, wherein said cathode and anode are forMed of interleaved rolled sheets having a J-shape and spaced from each other.
Claim 6
Dependent Claim
100 words
Method of manufacturing a high molecular weight semi-solid electrolytic capacitor comprising: assembling anode and cathode electrodes, inserting the assembled electrodes into a semi-solid electrolyte in a container, heating the electrolyte from the room temperature to a first temperature at about 50*C and then to a second temperature between about 80*C and 120*C for 0.5 - 1 hour to gel the electrolyte, and removing the resultant assembly from the container, said electrolyte consisting of a cross-linked polyamide resin, an organic solvent for dissolving said resin and captured in said cross-linked structure and an ionogen having electrolytic ions migrating in said solvent.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |