US4048403A
Expired / Lapsed
US
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Non-aqueous lead dioxide cell having a unipotential discharge voltage
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, a positive electrode comprising lead dioxide housed in a positive terminal conductive container, and wherein a layer of lead and/or lead monoxide is interposed substantially between the positive lead dioxide electrode and the inner surface of the positive terminal conductive container so as to achieve a substantially unipotential discharge for the cell over its useful life.
Inventors
- 👤 Marvin Lee Kronenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:37
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M4/00; H01M4/02; H01M4/06; H01M6/162; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
69 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide and an non-aqueous electrolyte comprising a salt dissolver in an organic solvent housed within a conductive container; a layer of lead monoxide interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 2
Dependent Claim
69 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide and an non-aqueous electrolyte comprising a salt dissolver in an organic solvent housed within a conductive container; a layer of lead monoxide interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 3
Dependent Claim
31 words
The lead oxide cell of claim 1 wherein the lead monoxide layer is the sole electronic path between the lead dioxide positive electrode and the inner surface of the conductive container.
Claim 4
Dependent Claim
31 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, the alkaline earth metals and alloys thereof.
Claim 5
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 6
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 7
Dependent Claim
27 words
The lead oxide cell of claim 3 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
27 words
The lead oxide cell of claim 5 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.
Claim 10
Dependent Claim
68 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide; and an non-aqueous electrolyte comprising a salt dissolved in an organic solvent housed within a conductive container; a layer of lead interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 11
Dependent Claim
68 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide; and an non-aqueous electrolyte comprising a salt dissolved in an organic solvent housed within a conductive container; a layer of lead interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 12
Dependent Claim
30 words
The lead oxide cell of claim 9 wherein the lead layer is the sole electronic path between the lead dioxide positive electrode and the inner surface of the conductive housing.
Claim 13
Dependent Claim
31 words
The lead oxide cell of claim 9 wherein the active metal negative electrode is selected from the group consisting of aluminum, the alkali metals, the alkaline earth metals and alloys thereof.
Claim 14
Dependent Claim
26 words
The lead oxide cell of claim 9 wherein the solute of the electrolyte is a complex salt of a Lewis acid and an inorganic ionizable salt.
Claim 15
Dependent Claim
45 words
The lead oxide cell of claim 9 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 16
Dependent Claim
27 words
The lead oxide cell of claim 11 wherein the active metal negative electrode is selected from the group consisting of lithium, sodium, potassium, calcium and alloys thereof.
Claim 17
Dependent Claim
15 words
The lead oxide cell of claim 14 wherein the active metal negative electrode is lithium.
Claim 18
Dependent Claim
27 words
The lead oxide cell of claim 13 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.
Claim 19
Dependent Claim
71 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide and an non-aqueous electrolyte comprising a salt dissolved in an organic solvent housed within a conductive container; a layer of lead and lead monoxide interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 20
Dependent Claim
71 words
A non-aqueous lead oxide cell comprising a highly active metal negative electrode, a positive electrode comprising lead dioxide and an non-aqueous electrolyte comprising a salt dissolved in an organic solvent housed within a conductive container; a layer of lead and lead monoxide interposed between, and electrically and physically in contact with, said positive electrode and the inner surface of the conductive container; and said cell having a substantially unipotential discharge voltage.
Claim 21
Dependent Claim
33 words
The lead oxide cell of claim 17 wherein the lead and lead monoxide layer is the sole electronic path between the lead dioxide positive electrode and the inner surface of the conductive container,.
Claim 22
Dependent Claim
31 words
The lead oxide cell of claim 17 wherein the active metal negative electrode is selected from the group consisting of aluminum, the alkali metals, the alkaline earth metals and alloys thereof.
Claim 23
Dependent Claim
26 words
The lead oxide cell of claim 17 wherein the solute of the electrolyte is a complex salt of a Lewis acid and an inorganic ionizable salt.
Claim 24
Dependent Claim
45 words
The lead oxide cell of claim 17 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-bytyrolactone; ethylene glycol sulfite; dimethylsulfite; dimethyl sulfoxide; 1,1- and 1,2-dimethoxyethane; and dimethyl isoxazole.
Claim 25
Dependent Claim
27 words
The lead oxide cell of claim 19 wherein the active metal negative electrode is selected from the group consisting of lithium, sodium, potassium, calcium and alloys thereof.
Claim 26
Dependent Claim
15 words
The lead oxide cell of claim 19 wherein the active metal negative electrode is lithium.
Claim 27
Dependent Claim
27 words
The lead oxide cell of claim 21 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 |