US4324680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver-silver chloride electrode and manufacturing method thereof
Assignee: Totoku Electric Co Ltd
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Filing: 1980-08-22
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Granted: 1982-04-13
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Expires: 2000-08-22
Abstract
Abstract A silver-silver chloride electrode used for medical measurement etc. and its manufacturing method are disclosed. A method of manufacturing a silver-silver chloride electrode by chemically reacting silver powder with chlorine in a solution containing chlorine ions or in a gas mixture containing chlorine or a chlorine compound to form silver chloride on the surface of the silver powder, followed by compression-forming of said powder is disclosed together with the silver-silver chloride electrode obtained by said method.
Inventors
- 👤 Misao Kubota
- 👤 Yoshitada Hanai
- 👤 Toshiaki Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:00
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/12; G01R31/16; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/301; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/582; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A silver-silver chloride electrode characterized in that said electrode is obtainable by forming silver chloride on the surface of silver powder particles in a proportion of 0.05 to 80% by weight and compression-forming the resultant compound powder.
Claim 2
Dependent Claim
37 words
A silver-silver chloride electrode characterized in that said electrode is obtainable by forming silver chloride on the surface of silver powder particles in a proportion of 0.05 to 80% by weight and compression-forming the resultant compound powder.
Claim 3
Dependent Claim
21 words
A silver-silver chloride electrode according to claim 1 wherein the particle size of said silver powder is smaller than 250 mesh.
Claim 4
Dependent Claim
22 words
A silver-silver chloride electrode according to claim 1 wherein the weight proportion of said silver chloride is 40 to 50% by weight.
Claim 5
Independent Claim
60 words
A method of manufacturing a silver-silver chloride electrode comprising the steps of chemically reacting silver powder particles with chlorine in a solution containing chlorine ions or in a gas mixture containing chlorine or a chlorine compound to form silver chloride on the surface of the silver powder particles, and compression-forming the resultant silver-silver chloride compound powder into a desired shape.
Claim 6
Independent Claim
60 words
A method of manufacturing a silver-silver chloride electrode comprising the steps of chemically reacting silver powder particles with chlorine in a solution containing chlorine ions or in a gas mixture containing chlorine or a chlorine compound to form silver chloride on the surface of the silver powder particles, and compression-forming the resultant silver-silver chloride compound powder into a desired shape.
Claim 7
Dependent Claim
39 words
A method of manufacturing a silver-silver chloride electrode according to claim 4 wherein the proportion of said silver chloride formed on the surface of said silver powder particles is 0.05 to 80% by weight relative to said silver powder.
Claim 8
Dependent Claim
25 words
A method of manufacturing a silver-silver chloride electrode according to claim 5 wherein the particle size of said silver powder is smaller than 250 mesh.
Claim 9
Dependent Claim
30 words
A method of manufacturing a silver-silver chloride electrode according to claim 5 wherein said solution containing chlorine ions is either an aqueous HCl solution or aqueous solution of sodium hypochlorite.
Claim 10
Dependent Claim
19 words
A method of manufacturing a silver-silver chloride electrode according to claim 5 wherein said chlorine gas compound is HCl.
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) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |