US4048402A
Expired / Lapsed
US
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Non-aqueous cell having a cathode of lead monoxide-coated lead dioxide particles
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1976-12-27
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Granted: 1977-09-13
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Expires: 1996-12-27
Abstract
Abstract A non-aqueous lead oxide cell having a negative electrode, such as lithium, a non-aqueous electrolyte and a positive lead oxide electrode, said lead oxide electrode comprising lead dioxide particles each having an outer layer of lead monoxide.
Inventors
- 👤 Marvin Lee Kronenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:42
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A lead oxide cell comprising a highly active metal negative electrode, a positive electrode and a non-aqueous electrolyte comprising a salt dissolved in an organic solvent; said positive electrode comprising lead dioxide particles having a substantially complete outer layer of lead monoxide, and said cell having a substantially unipotential discharge voltage.
Claim 2
Dependent Claim
51 words
A lead oxide cell comprising a highly active metal negative electrode, a positive electrode and a non-aqueous electrolyte comprising a salt dissolved in an organic solvent; said positive electrode comprising lead dioxide particles having a substantially complete outer layer of lead monoxide, and said cell having a substantially unipotential discharge voltage.
Claim 3
Dependent Claim
34 words
The lead oxide cell of claim 1 wherein the lead monoxide layer on the lead dioxide particles varies between about 1 percent and about 60 percent based on the weight of the lead oxides.
Claim 4
Dependent Claim
30 words
The lead oxide cell of claim 1 wherein said lead dioxide particles having a substantially complete outer layer of lead monoxide vary between about 0.4 mm and about 0.47 mm.
Claim 5
Dependent Claim
34 words
The lead oxide cell of claim 3 wherein the lead monoxide layer on the lead dioxide particles varies between about 1 percent and about 60 percent based on the weight of the lead oxides.
Claim 6
Dependent Claim
30 words
The lead oxide cell of claim 1 wherein the active metal negative electrode is selected from the group consisting of aluminum, the alkali metals alkaline earth metals and alloys thereof.
Claim 7
Dependent Claim
27 words
The lead oxide cell of claim 5 wherein the active metal negative electrode is selected from the group consisting of lithium, sodium, potassium, calcium and alloys thereof.
Claim 8
Dependent Claim
15 words
The lead oxide cell of claim 6 wherein the active metal negative electrode is lithium.
Claim 9
Dependent Claim
26 words
The lead oxide cell of claim 1 wherein the solute of the electrolyte is a complex salt of a Lewis acid and an inorganic ionizable salt.
Claim 10
Dependent Claim
45 words
The lead oxide cell of claim 1 wherein the solvent of the electrolyte is at least one solvent selected from the group consisting of sulfolane, crotonitrile, nitrobenzene, tetrahydrofuran, 1,3-dioxolane, 3-methyl-2-oxazolidone, propylene carbonate, γ-butyrolactone, ethylene glycol sulfite, dimethylsulfite, dimethyl sulfoxide, 1,1- and 1,2-dimethoxyethane, and dimethyl isoxazole.
Claim 11
Dependent Claim
27 words
The lead oxide cell of claim 8 wherein said at least one solvent is selected from the group consisting of sulfolane, 3-methyl-2-oxazolidone, propylene carbonate, 1,3-dioxolane, and dimethoxyethane.
References Cited (Backward Citations)
US3877983A
Cited
US3907597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |