Patent US2921447A successfully refreshed from Google Patents.
Patent US4619754A successfully refreshed from Google Patents.
US4619754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically modified electrodes and their uses
Assignee: Ajinomoto Co Inc
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Filing: 1983-03-08
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Granted: 1986-10-28
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Expires: 2003-03-08
Abstract
Abstract An electrically conducting solid electrode having a surface on which a nitrogen-containing electron mediator and a strong acidic cation exchange resin containing aromatic groups are immobilized is disclosed along with methods for producing this electrode and uses therefor.
Inventors
- 👤 Katsumi Niki
- 👤 Katsuyoshi Kobayashi
- 👤 Hiroo Inoguchi
- 👤 Tatsuhiko Yagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:29
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/327; G01N27/3275; G01N27/3277; Y; Y10; Y10S; Y10S348/00; Y10S348/902; Y10S435/00; Y10S435/817
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
28 words
An electrically conducting solid electrode having a surface on which a monomeric nitrogen-containing electron mediator and a strong acidic cation exchange resin containing sulfonated, aromatic groups are immobilized.
Claim 2
Dependent Claim
28 words
An electrically conducting solid electrode having a surface on which a monomeric nitrogen-containing electron mediator and a strong acidic cation exchange resin containing sulfonated, aromatic groups are immobilized.
Claim 3
Dependent Claim
21 words
The electrically conducting solid electrode as set forth in claim 1, where said strong acidic cation exchange resin is polystyrenesulfonic acid.
Claim 4
Dependent Claim
61 words
The electrically conducting solid electrode as set forth in claim 1, where said electron mediator is a viologen, cytochrome C 3 , nicotinamide-adenine dinucleotide (NAD), a ferredoxin, or a methyl-substituted phenylenediamine or a metal complex composed of a metal selected from the group consisting of ruthenium, iron and osmium and a ligand selected from the group consisting of 2,2'-bipyridine and 1,10-phenanathroline.
Claim 5
Dependent Claim
63 words
The electrically conducting solid electrode as said forth in claim 1, wherein said resin is immobilized on said surface by plasma-polymerization or by coating said surface with a mixture of said resin and either poly-vinyl alcohol or collodin solution and in a second step said mediator is coated on said surface in combination with said resin and either poly-vinyl alcohol, collodin, or acetylcellulose.
Claim 6
Dependent Claim
30 words
The electrically conducting solid electrode as set forth in claim 1, wherein the nitrogen-containing electron mediator is present in an amount less than the capacity of the cation exchange resin.
Claim 7
Dependent Claim
33 words
The electrically conducting solid electrode as set forth in claim 5, wherein the nitrogen-containing electron mediator is present in an amount at least one tenth of the capacity of the cation exchange resin.
Claim 8
Dependent Claim
59 words
A hydrogen electrode which comprises (a) an electrically conducting solid electrode on the surface of which a monomeric nitrogen-containing electron mediator and a strong acidic cation exchange resin containing aromatic groups are immobilized and (b) a redox system which is coupled to said electron mediator on the electrode, where the redox system is hydrogenase, nitrogenase, bacterium, ferrodoxin or NADH.
Claim 9
Dependent Claim
59 words
A hydrogen electrode which comprises (a) an electrically conducting solid electrode on the surface of which a monomeric nitrogen-containing electron mediator and a strong acidic cation exchange resin containing aromatic groups are immobilized and (b) a redox system which is coupled to said electron mediator on the electrode, where the redox system is hydrogenase, nitrogenase, bacterium, ferrodoxin or NADH.
Claim 10
Dependent Claim
32 words
An oxygen electrode, which comprises an electrically conducting solid electrode on the surface of which a strong acidic cation exchange resin containing aromatic groups, a monomeric viologen and a chloroplast are immobilized.
Claim 11
Dependent Claim
32 words
An oxygen electrode, which comprises an electrically conducting solid electrode on the surface of which a strong acidic cation exchange resin containing aromatic groups, a monomeric viologen and a chloroplast are immobilized.
Claim 12
Dependent Claim
36 words
A voltammetric detector of biologically active substances comprising an electrically conducting solid electrode on which a strong acidic cation exchange resin containing aromatic groups, a monomeric nitrogen-containing electron mediator and a biologically active substance are immobilized.
Claim 13
Dependent Claim
36 words
A voltammetric detector of biologically active substances comprising an electrically conducting solid electrode on which a strong acidic cation exchange resin containing aromatic groups, a monomeric nitrogen-containing electron mediator and a biologically active substance are immobilized.
Claim 14
Dependent Claim
41 words
A photochromic display element, comprising an electrically conducting solid electrode on the surface of which a composition comprising (a) a strong acidic cation exchange resin containing aromatic groups and (b) a monomeric nitrogen-containing electron mediator and (c) a chloroplast are immobilized.
Claim 15
Dependent Claim
41 words
A photochromic display element, comprising an electrically conducting solid electrode on the surface of which a composition comprising (a) a strong acidic cation exchange resin containing aromatic groups and (b) a monomeric nitrogen-containing electron mediator and (c) a chloroplast are immobilized.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |