US4395322A
Expired / Lapsed
US
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Catalytic electrode
Assignee: General Electric Co
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Filing: 1981-11-18
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Granted: 1983-07-26
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Expires: 2001-11-18
Abstract
Abstract A catalytic electrode is produced by sputter etching the surface of a conductor with ions of an inert gas to remove oxide therefrom and introduce disorder into the surface making it chemically reactive and depositing a catalytic metal on the etched surface of the conductor in at least a catalytic amount.
Inventors
- 👤 Lawrence A. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/92; C; C25; C25B; C25B11/00; C25B11/04; H01M10/00; H01M10/42; H01M10/52; H01M4/88; H01M4/8817; H01M4/8825; H01M4/8867; H01M4/8871; H01M8/00; H01M8/02; H01M8/0202; H01M8/023; H01M8/0232; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
68 words
A catalytic electrode consisting essentially of a supporting electrical conductor carrying an adherent catalytic metal in a thickness of at least about 10 Angstroms and in at least a catalytic amount on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, and said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium.
Claim 2
Dependent Claim
68 words
A catalytic electrode consisting essentially of a supporting electrical conductor carrying an adherent catalytic metal in a thickness of at least about 10 Angstroms and in at least a catalytic amount on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, and said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium.
Claim 3
Dependent Claim
18 words
A catalytic electrode according to claim 1 wherein said catalytic metal is in the form of discrete islands.
Claim 4
Dependent Claim
20 words
A catalytic electrode according to claim 1 wherein said catalytic metal is in the form of a continuous interconnected network.
Claim 5
Dependent Claim
30 words
A catalytic electrode according to claim 1 wherein said catalytic metal has a thickness of at least about 20 Angstroms and is in the form of a continuous solid film.
Claim 6
Dependent Claim
39 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting adherent platinum on a predetermined surface thereof, said platinum being present in at least a catalytic amount and having a thickness of at least about 10 Angstroms.
Claim 7
Dependent Claim
39 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting adherent platinum on a predetermined surface thereof, said platinum being present in at least a catalytic amount and having a thickness of at least about 10 Angstroms.
Claim 8
Dependent Claim
17 words
A catalytic electrode according to claim 5 wherein said platinum is in the form of discrete islands.
Claim 9
Dependent Claim
19 words
A catalytic electrode according to claim 5 wherein said platinum is in the form of a continuous interconnecting network.
Claim 10
Dependent Claim
35 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting an adherent continuous film of platinum on a predetermined surface thereof, said platinum film having a thickness of at least about 20 Angstroms.
Claim 11
Dependent Claim
35 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting an adherent continuous film of platinum on a predetermined surface thereof, said platinum film having a thickness of at least about 20 Angstroms.
Claim 12
Dependent Claim
79 words
A catalytic electrode consisting essentially of an electrical conductor supporting an adherent catalytic metal in a thickness of at least about 10 Angstroms and in at least a catalytic amount on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium, and any exposed surface of said electrical conductor having a protective oxide thereon.
Claim 13
Dependent Claim
79 words
A catalytic electrode consisting essentially of an electrical conductor supporting an adherent catalytic metal in a thickness of at least about 10 Angstroms and in at least a catalytic amount on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium, and any exposed surface of said electrical conductor having a protective oxide thereon.
Claim 14
Dependent Claim
76 words
A catalytic electrode consisting essentially of an electrical conductor supporting an adherent continuous film of a catalytic metal in a thickness of at least about 20 Angstroms on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium, and any exposed surface of said electrical conductor having a protective oxide thereon.
Claim 15
Dependent Claim
76 words
A catalytic electrode consisting essentially of an electrical conductor supporting an adherent continuous film of a catalytic metal in a thickness of at least about 20 Angstroms on a predetermined surface thereof, said electrical conductor being selected from the group consisting of silicon, titanium, tantalum, and niobium, said catalytic metal being selected from the group consisting of platinum, palladium, nickel, rhodium, and iridium, and any exposed surface of said electrical conductor having a protective oxide thereon.
Claim 16
Dependent Claim
51 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting adherent platinum on a predetermined surface thereof, said platinum being present in at least a catalytic amount and having a thickness of at least about 10 Angstroms, and any exposed surface of said silicon having a protective oxide thereon.
Claim 17
Dependent Claim
51 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting adherent platinum on a predetermined surface thereof, said platinum being present in at least a catalytic amount and having a thickness of at least about 10 Angstroms, and any exposed surface of said silicon having a protective oxide thereon.
Claim 18
Dependent Claim
47 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting an adherent continuous film of platinum on a predetermined surface thereof, said platinum film having a thickness of at least about 20 Angstroms, and any exposed surface of said silicon having a protective oxide thereon.
Claim 19
Dependent Claim
47 words
A catalytic electrode consisting essentially of an electrical conductor of silicon supporting an adherent continuous film of platinum on a predetermined surface thereof, said platinum film having a thickness of at least about 20 Angstroms, and any exposed surface of said silicon having a protective oxide thereon.
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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) | 1986-07-25 | 1987-01-24 | 1987-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-25 | 1991-01-24 | 1991-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-25 | 1995-01-24 | 1995-07-26 | $7700.00 | Window Closed / Lapsed |