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US4038586A
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Coulomb memory element
Assignee: Panasonic Holdings Corp
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Filing: 1975-05-20
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Granted: 1977-07-26
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Expires: 1995-05-20
Abstract
Abstract A coulomb memory element having an electric current breaking action at a high allowable maximum voltage in which an electrolyte consisting mainly of a lead salt or a mixture of lead salts is charged between one or more inactive electrodes consisting of tungsten or tungsten plated with gold and one or more active electrodes consisting of pure lead which may be dissolved or deposited according to Faraday's law.
Inventors
- 👤 Satoshi Sekido
- 👤 Tomohiko Arita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/0002; G11C13/0009; B; B82; B82Y; B82Y10/00; G01; G01R; G01R22/00; G01R22/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A coulomb memory element comprising an electrolyte consisting of an aqueous solution selected from the group consisting of lead silicofluoride (PbSiF 6 ), lead borofluoride (Pb(BF 4 ) 2 ) and mixtures thereof, having added thereto a member selected from the group consisting of lithium silicofluoride and lithium borofluoride; at least one inactive electrode consisting essentially of tungsten plated with gold; and at least one active electrode consisting essentially of lead, said electrolyte being charged between said inactive and active electrodes and said active electrode being dissolved or deposited according to Faraday's law.
Claim 2
Dependent Claim
93 words
A coulomb memory element comprising an electrolyte consisting of an aqueous solution selected from the group consisting of lead silicofluoride (PbSiF 6 ), lead borofluoride (Pb(BF 4 ) 2 ) and mixtures thereof, having added thereto a member selected from the group consisting of lithium silicofluoride and lithium borofluoride; at least one inactive electrode consisting essentially of tungsten plated with gold; and at least one active electrode consisting essentially of lead, said electrolyte being charged between said inactive and active electrodes and said active electrode being dissolved or deposited according to Faraday's law.
Claim 3
Dependent Claim
35 words
A coulomb memory element according to claim 1, wherein the electrolyte is an aqueous solution containing 600- 800 g/l of lead silicofluoride or lead borofluoride and 250- 450 g/l of lithium silicofluoride or lithium borofluoride.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |