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Patent US4175052A successfully refreshed from Google Patents.
US4175052A
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Alkaline-MnO2 cell having a zinc powder-gel anode containing P-N-V-P or PMA
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1978-03-31
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Granted: 1979-11-20
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Expires: 1998-03-31
Abstract
Abstract An alkaline-MnO 2 cell employing a zinc powder-gel anode in which the gelling agent is poly-N-vinyl pyrrolidone (P-N-V-P) or polymethacrylic acid (PMA) with or without carboxymethyl cellulose.
Inventors
- 👤 William E. Norteman, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:10
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/621; H01M6/00; H01M6/04; H01M6/06; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
24 words
A powder-gel anode comprising a major portion of a consumable anodic material, a minor amount of poly-N-vinyl pyrrolidone and an aqueous alkaline electrolyte solution.
Claim 2
Dependent Claim
24 words
A powder-gel anode comprising a major portion of a consumable anodic material, a minor amount of poly-N-vinyl pyrrolidone and an aqueous alkaline electrolyte solution.
Claim 3
Dependent Claim
22 words
The powder-gel anode of claim 1 wherein the consumable anodic material is zinc powder and the electrolyte solution is aqueous potassium hydroxide.
Claim 4
Dependent Claim
28 words
The powder-gel anode of claim 2 wherein the poly-N-vinyl pyrrolidone is present in an amount between about 0.5 and 6 percent based on the weight of the anode.
Claim 5
Dependent Claim
17 words
The powder-gel anode of claim 1 wherein the powder-gel anode contains a minor amount of carboxymethyl cellulose.
Claim 6
Dependent Claim
36 words
The powder-gel anode of claim 4 wherein the poly-N-vinyl pyrrolidone varies between about 1 and about 4.5 percent and the carboxymethyl cellulose between about 0.5 and about 2.5 percent based on the weight of the anode.
Claim 7
Dependent Claim
29 words
The powder-gel anode of claim 5 wherein the poly-N-vinyl pyrrolidone is about 1 percent and the carboxymethyl cellulose is about 1.5 percent based on the weight of the anode.
Claim 8
Dependent Claim
22 words
The powder-gel anode of claim 4 wherein the consumable anodic material is zinc powder and the electrolyte solution is aqueous potassium hydroxide.
Claim 9
Dependent Claim
19 words
The powder-gel anode of claim 1 for use in an alkaline-MnO 2 cell employing an aqueous potassium hydroxide electrolyte.
Claim 10
Dependent Claim
19 words
The powder-gel anode of claim 4 for use in an alkaline-MnO 2 cell employing an aqueous potassium hydroxide electrolyte.
Claim 11
Dependent Claim
24 words
A powder-gel anode comprising a major portion of a consumable anodic material, a minor amount of polymethacrylic acid and an aqueous alkaline electrolyte solution.
Claim 12
Dependent Claim
24 words
A powder-gel anode comprising a major portion of a consumable anodic material, a minor amount of polymethacrylic acid and an aqueous alkaline electrolyte solution.
Claim 13
Dependent Claim
22 words
The powder-gel anode of claim 10 wherein the consumable anodic material is zinc powder and the electrolyte solution is aqueous potassium hydroxide.
Claim 14
Dependent Claim
29 words
The powder-gel anode of claim 11 wherein the polymethacrylic acid is present in an amount between about 0.5 and about 6 percent based on the weight of the anode.
Claim 15
Dependent Claim
18 words
The powder-gel anode of the claim 10 wherein the powder-gel anode contains a minor amount of carboxymethyl cellulose.
Claim 16
Dependent Claim
36 words
The powder-gel anode of claim 13 wherein the polymethacrylic acid varies between about 1 and about 4.5 percent and the carboxymethyl cellulose between about 0.5 and about 2.5 percent based on the weight of the anode.
Claim 17
Dependent Claim
29 words
The powder-gel anode of claim 14 wherein the polymethacrylic acid is about 1.7 percent and the carboxymethyl cellulose is about 1.5 percent based on the weight of the anode.
Claim 18
Dependent Claim
22 words
The powder-gel anode of claim 13 wherein the consumable anodic material is zinc powder and the electrolyte solution is aqueous potassium hydroxide.
Claim 19
Dependent Claim
19 words
The powder-gel anode of claim 10 for use in an alkaline-MnO 2 cell employing an aqueous potassium hydroxide electrolyte.
Claim 20
Dependent Claim
19 words
The powder-gel anode of claim 13 for use in an alkaline-MnO 2 cell employing an aqueous potassium hydroxide electrolyte.
Claim 21
Dependent Claim
17 words
The powder-gel anode of claim 10 wherein the powder-gel anode contains a minor amount of poly-N-vinyl pyrrolidone.
Claim 22
Dependent Claim
17 words
The powder-gel anode of claim 13 wherein the powder-gel anode contains a minor amount of poly-N-vinyl pyrrolidone.
Claim 23
Dependent Claim
55 words
The powder-gel anode of claim 20 wherein the polymethacrylic acid and poly-N-vinyl pyrrolidone are present in an amount between about 1 and about 4.5 percent based on the weight of the anode and the carboxymethyl cellulose is present in an amount between about 0.5 and about 2.5 percent based on the weight of the anode.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |