US4407908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode for an electrolyser
Assignee: Alcatel Lucent SAS
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Filing: 1979-02-01
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Granted: 1983-10-04
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Expires: 1999-02-01
Abstract
Abstract A cathode for an electrolyser. It comprises porous conductive material which includes sintered nickel impregnated with a catalyst, characterized in that said catalyst is a molybdate of nickel or iron or mixtures thereof. The invention is used for manufacturing hydrogen by electrolysing an aqueous alkaline solution.
Inventors
- 👤 Anthony J. Appleby
- 👤 Gilles Crepy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:04
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A cathode for an electrolyser, said cathode comprising a porous conductive material which includes sintered nickel impregnated with a catalyst, said catalyst comprising a molybdate of at least one metal chosen from the group consisting of nickel, iron and mixtures thereof, wherein the ratio of weight between the molybdate and the sintered nickel lies substantially between 20 and 40%.
Claim 2
Dependent Claim
59 words
A cathode for an electrolyser, said cathode comprising a porous conductive material which includes sintered nickel impregnated with a catalyst, said catalyst comprising a molybdate of at least one metal chosen from the group consisting of nickel, iron and mixtures thereof, wherein the ratio of weight between the molybdate and the sintered nickel lies substantially between 20 and 40%.
Claim 3
Dependent Claim
20 words
A cathode according to claim 1, wherein the porosity of the porous conductive material lies substantially between 30 and 50%.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |