US4146685A
Expired / Lapsed
US
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Molded metal oxide electrodes containing an ethylene acrylic acid additive
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1978-03-28
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Granted: 1979-03-27
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Expires: 1998-03-28
Abstract
Abstract A method for producing a molded metal oxide electrode such as a silver oxide electrode and the electrode so produced for use in electrochemical cells, such as alkaline-zinc cells, which comprises a metal oxide and a minor amount of an ethylene acrylic acid polymer.
Inventors
- 👤 Gary R. Tucholski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/621; H01M4/06; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
25 words
A molded metal oxide electrode for use in electrochemical cells which comprises a metal oxide and a minor amount of an ethylene acrylic acid polymer.
Claim 2
Dependent Claim
25 words
A molded metal oxide electrode for use in electrochemical cells which comprises a metal oxide and a minor amount of an ethylene acrylic acid polymer.
Claim 3
Dependent Claim
39 words
The molded metal oxide electrode of claim 1 wherein the metal oxide is selected from at least one of the oxides consisting of silver oxide (monovalent and divalent), mercury oxide, cadmium oxide, manganese dioxide, nickel oxide, and nickel hydroxide.
Claim 4
Dependent Claim
41 words
The metal oxide electrode of claim 1 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the dry powder constituents of the metal oxide electrode.
Claim 5
Dependent Claim
40 words
The metal oxide electrode of claim 3 wherein said ethylene acrylic acid polymer is present in an amount of between about 1 and about 2 percent based on the weight of the dry powder constituents of the metal oxide electrode.
Claim 6
Dependent Claim
41 words
The metal oxide electrode of claim 2 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the dry powder constituents of the metal oxide electrode.
Claim 7
Dependent Claim
40 words
The metal oxide electrode of claim 5 wherein said ethylene acrylic acid polymer is present in an amount of between about 1 and about 2 percent based on the weight of the dry powder constituents of the metal oxide electrode.
Claim 8
Dependent Claim
15 words
The metal oxide electrode of claim 1 wherein the metal oxide comprises divalent silver oxide.
Claim 9
Dependent Claim
41 words
The silver oxide electrode of claim 7 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the dry powder constituents of the silver oxide electrode.
Claim 10
Dependent Claim
35 words
The silver oxide electrode of claim 7 wherein said electrode contains less than 50 percent by weight of monovalent silver oxide based on the weight of the dry powder constituents of the silver oxide electrode.
Claim 11
Dependent Claim
41 words
The silver oxide electrode of claim 9 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the dry powder constituents of the silver oxide electrode.
Claim 12
Dependent Claim
32 words
The silver oxide electrode of claim 7 wherein said electrode contains a minor amount of a material selected from the group consisting of ethylene bis-stearamide, zinc stearate, lead stearate, and calcium stearate.
Claim 13
Dependent Claim
41 words
The silver oxide electrode of claim 11 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the dry powder constituents of the silver oxide electrode.
Claim 14
Dependent Claim
29 words
An alkaline cell employing a zinc anode, a metal oxide electrode comprising divalent silver oxide and a minor amount of ethylene acrylic acid polymer, and a potassium hydroxide electrolyte.
Claim 15
Dependent Claim
29 words
An alkaline cell employing a zinc anode, a metal oxide electrode comprising divalent silver oxide and a minor amount of ethylene acrylic acid polymer, and a potassium hydroxide electrolyte.
Claim 16
Dependent Claim
36 words
The alkaline cell of claim 13 wherein the silver oxide electrode contains less than 50 percent by weight of monovalent silver oxide based on the weight of the dry powder constituents of the silver oxide electrode.
Claim 17
Independent Claim
48 words
A method for producing a molded metal oxide electrode comprising the steps: (a) mixing a metal oxide powder with a minor amount of an ethylene acrylic acid polymer; and (b) compacting a metered portion of the mixture of step (a) to form a pressed, molded metal oxide electrode.
Claim 18
Independent Claim
48 words
A method for producing a molded metal oxide electrode comprising the steps: (a) mixing a metal oxide powder with a minor amount of an ethylene acrylic acid polymer; and (b) compacting a metered portion of the mixture of step (a) to form a pressed, molded metal oxide electrode.
Claim 19
Dependent Claim
34 words
The method of claim 15 wherein said ethylene acrylic acid polymer is present in an amount of between about 0.5 and about 10 weight percent based on the weight of the metal oxide powder.
Claim 20
Dependent Claim
36 words
The method of claim 16 wherein said metal oxide is selected from at least one of the oxides consisting of silver oxide (monovalent and divalent), mercury oxide, cadmium oxide, manganese dioxide, nickel oxide, and nickel hydroxide.
Claim 21
Dependent Claim
13 words
The method of claim 17 wherein said metal oxide is divalent silver oxide.
Claim 22
Dependent Claim
17 words
The method of claim 17 wherein said metal oxide is divalent silver oxide and monovalent silver oxide.
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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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |