Patent US3960600A successfully refreshed from Google Patents.
US3960600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode construction
Assignee: Leesona Corp
•
Filing: 1971-03-09
•
Granted: 1976-06-01
•
Expires: 1991-03-09
Abstract
Abstract An improved anode primarily for use in a metal/air or metal/oxygen cell is described. The anode comprises a porous metal body wrapped in first and second layers of different and distinct materials, the first layer being hydrophilic and gas-impermeable, when in contact with an aqueous electrolyte such as the cellulosic membranes; and the second layer, preferably in bag form, being gas-permeable, hydrophilic, dimensionally stable, and heat sealable such as co-polymers of vinyl chloride and acrylonitrile. Superior cell performance is obtained.
Inventors
- 👤 Stewart M. Chodosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:39
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
An anode for an electrochemical cell comprising a porous anodic metal body wrapped in first and second layers of different and distinct materials, said first layer being gas-impermeable when in contact with an aqueous electrolyte, hydrophilic, and ion-permeable; and said second layer being gas-permeable when in contact with an aqueous electrolyte, hydrophilic, dimensionally stable, and heat sealable.
Claim 2
Dependent Claim
57 words
An anode for an electrochemical cell comprising a porous anodic metal body wrapped in first and second layers of different and distinct materials, said first layer being gas-impermeable when in contact with an aqueous electrolyte, hydrophilic, and ion-permeable; and said second layer being gas-permeable when in contact with an aqueous electrolyte, hydrophilic, dimensionally stable, and heat sealable.
Claim 3
Dependent Claim
19 words
The anode of claim 1 wherein the second layer is in bag form and heat sealed at the top.
Claim 4
Dependent Claim
25 words
The anode of claim 2 wherein the metal body includes a metal selected from the group consisting of lead, zinc, iron, cadmium, aluminum, and magnesium.
Claim 5
Dependent Claim
12 words
The anode of claim 2 wherein the anodic metal body includes zinc.
Claim 6
Dependent Claim
40 words
The anode of claim 1 wherein the anodic metal body includes zinc, the first layer is composed of unglycerinated desulfurized fibrous cellulose and the second layer is in bag form and is composed of a co-polymer of vinylchloride and acrylonitrile.
Claim 7
Dependent Claim
83 words
An anode comprising a porous anodic metal body wrapped in first and second layers of different and distinct materials, said first layer being gas-impermeable when in contact with an aqueous electrolyte, hydrophilic, and ion-permeable; and said second layer being gas-permeable when in contact with an aqueous electrolyte, hydrophilic, dimensionally stable, and heat sealable, disposed in a metal/air cell comprising an anode, a cathode, and an electrolyte between said anode and cathode, said cathode comprising a hydrophobic membrane in contact with a catalyst layer.
Claim 8
Dependent Claim
83 words
An anode comprising a porous anodic metal body wrapped in first and second layers of different and distinct materials, said first layer being gas-impermeable when in contact with an aqueous electrolyte, hydrophilic, and ion-permeable; and said second layer being gas-permeable when in contact with an aqueous electrolyte, hydrophilic, dimensionally stable, and heat sealable, disposed in a metal/air cell comprising an anode, a cathode, and an electrolyte between said anode and cathode, said cathode comprising a hydrophobic membrane in contact with a catalyst layer.
Claim 9
Dependent Claim
19 words
The structure of claim 6 wherein the second layer is in bag form and heat sealed at the top.
Claim 10
Dependent Claim
25 words
The structure of claim 7 wherein the anodic metal body includes a member of the group consisting of lead, zinc, iron, cadmium, aluminum, and magnesium.
Claim 11
Dependent Claim
12 words
The structure of claim 7 wherein the anodic metal body includes zinc.
Claim 12
Dependent Claim
36 words
The structure of claim 6 wherein the anodic metal body includes zinc, the first layer is unglycerinated desulfurized fibrous cellulose, and the second layer is in bag form and is a co-polymer of vinylchloride and acrylonitrile.
References Cited (Backward Citations)
US1990976A
Cited
US2490630A
Cited
US2647157A
Cited
US2610219A
Cited
US2870235A
Cited
US3253954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |