US3630779A
Expired / Lapsed
US
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Method of making a cathode for use in a galvanic cell
Assignee: Elca Battery Co
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Filing: 1970-04-22
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Granted: 1971-12-28
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Expires: 1990-04-22
Abstract
Abstract A galvanic cell is disclosed having a cathode comprising a mercury compound to provide active cathodic electrochemical action during cell operation and conductive powders mixed with the mercury compound to provide mass electrical conductivity through the cathode during cathodic electrochemical action. The conductive powders are coated with mercury in constructing the cathode in order that mercury in liquid form reduced from the mercury compound during cell operation rapidly and uniformly wets the mercury coated powders rather than agglomerate and thereby form means which could internally short circuit the cell or contaminate the cell anode.
Inventors
- 👤 Morris Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:52
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
A method of making a cathode for use in a galvanic cell, said method comprising the steps of
Claim 2
Dependent Claim
7 words
amalgamating said coated conductive powders with mercury;
Claim 3
Dependent Claim
23 words
Mixing said mercury-coated metallic powders with a mercury compound selected from the group consisting of mercury oxides, mercury sulfides and mercury halides; and
Claim 4
Dependent Claim
14 words
Pressing the mixture of mercury-coated metallic powders and mercury compound to a conductive support.
Claim 5
Dependent Claim
24 words
mixing said amalgamated, coated, conductive powders with a mercury compound selected from the group consisting of mercury oxides, mercury sulfides and mercury halides; and
Claim 6
Dependent Claim
15 words
pressing the mixture of amalgamated coated, conductive powders and mercury compound to a conductive support.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |