US4115238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium- and tellurium-coated metal electrodes
Assignee: Honeywell International Inc
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Filing: 1977-04-11
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Granted: 1978-09-19
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Expires: 1997-04-11
Abstract
Abstract Electrodes of a metal selected from the group consisting of iron, cobalt, nickel, manganese, chromium and alloys thereof having a conductive coating of selenium and/or tellurium, in oxidized form, are suitable for use as oxygen electrodes and have enhanced catalytic activity for oxygen evolution in neutral, acidic and alkaline media.
Inventors
- 👤 Divna Cipris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:12
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/077; H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
An electrode for use in electrochemical processes comprising a metallic base comprising a metal selected from the group consisting of iron, cobalt, nickel, manganese, chromium and alloys thereof with each other, having deposited thereon and in direct contact therewith a surface coating of selenium, tellurium or mixtures thereof, each in oxidized form.
Claim 2
Dependent Claim
52 words
An electrode for use in electrochemical processes comprising a metallic base comprising a metal selected from the group consisting of iron, cobalt, nickel, manganese, chromium and alloys thereof with each other, having deposited thereon and in direct contact therewith a surface coating of selenium, tellurium or mixtures thereof, each in oxidized form.
Claim 3
Dependent Claim
14 words
An electrode according to claim 1 wherein the metallic base is comprised of nickel.
Claim 4
Dependent Claim
15 words
An electrode according to claim 1 wherein the metallic base is comprised of stainless steel.
Claim 5
Dependent Claim
17 words
An electrode according to claim 1 wherein the surface coating is comprised of selenium in oxidized form.
Claim 6
Dependent Claim
14 words
An electrode according to claim 4 wherein the metallic base is comprised of nickel.
Claim 7
Dependent Claim
15 words
An electrode according to claim 4 wherein the metallic base is comprised of stainless steel.
Claim 8
Dependent Claim
17 words
An electrode according to claim 1 wherein the surface coating is comprised of tellurium in oxidized form.
Claim 9
Dependent Claim
14 words
An electrode according to claim 7 wherein the metallic base is comprised of nickel.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |