US3915748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum anode for biogalvanic metal-oxygen cells
Assignee: Siemens AG
•
Filing: 1974-07-15
•
Granted: 1975-10-28
•
Expires: 1994-07-15
Abstract
Abstract An aluminum anode for biogalvanic metal-oxygen calls comprising a metal screen having layers of aluminum on both sides of said screen, wherein the outer surfaces of said aluminum layers are finely ground and provided with an anodized layer on a marginal area of said outer surface sufficient to provide an active surface.
Inventors
- 👤 Erhard Weidlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:43
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/378; H01M4/00; H01M4/02; H01M4/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
AN ALUMINUM ANODE FOR BIOGALVANIC METAL-OXYGEN CELLS COMPRISING A METAL SCREEN HAVING LAYERS OF ALUMINUM ON BOTH SIDES OF SAID SCREEN WHEREIN THE OUTER SURFACE OF SAID LAYERS OF ALUMINUM ARE FINELY GROUND TO PROVIDE ACTIVE SURFACES AND PROVIDED WITH AN ANODIZED LAYER ON A MARGINAL AREAS OF SAID OUTER SURFACES.
Claim 2
Dependent Claim
51 words
AN ALUMINUM ANODE FOR BIOGALVANIC METAL-OXYGEN CELLS COMPRISING A METAL SCREEN HAVING LAYERS OF ALUMINUM ON BOTH SIDES OF SAID SCREEN WHEREIN THE OUTER SURFACE OF SAID LAYERS OF ALUMINUM ARE FINELY GROUND TO PROVIDE ACTIVE SURFACES AND PROVIDED WITH AN ANODIZED LAYER ON A MARGINAL AREAS OF SAID OUTER SURFACES.
Claim 3
Dependent Claim
14 words
The aluminum anode of claim 1 wherein said metal screen is a silver screen.
Claim 4
Dependent Claim
19 words
The aluminum anode of claim 1 wherein said layers of aluminum are provided with openings extending through said layers.
Claim 5
Dependent Claim
14 words
The aluminum anode of claim 1 wherein said anode is enclosed with a membrane.
Claim 6
Dependent Claim
22 words
The aluminum anode of claim 4 wherein said membrane is made from polyvinyl alcohol or a polyvinyl alcohol and polyacrylic acid mixture.
Claim 7
Dependent Claim
14 words
A metal/oxygen cell containing as an anode therefor, the aluminum anode of claim 1.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |