US3732157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell including titanium hydride cathodes and noble-metal coated titanium hydride anodes
Assignee: NORA INTER CO
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Filing: 1971-02-17
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Granted: 1973-05-08
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Expires: 1991-02-17
Abstract
Abstract Electrolytic cells for the electrolysis of aqueous alkali metal chlorides are disclosed. Further disclosed are electrodes for use in combination with said cells, the said electrodes having titanium hydride cathodic members and noble metal coated titanium hydride anodic members. The noble metal coatings on the anodic members are gold, silver, platinum, palladium, iridium, ruthenium, osmium, and rhodium. In one exemplification, the electrolytic cell is of bipolar configuration and has a bipolar electrode of titanium hydride with a titanium hydride cathodic surface, and a noble metal anodic surface.
Inventors
- 👤 B Dewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/055; C25B11/057; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B1/265; C25B11/02; C25B11/036; C25B11/067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
21 words
The alkali metal chloride electrolytic cell of claim 1 wherein the anode comprises titanium hydride having a noble metal coating thereon.
Claim 2
Dependent Claim
30 words
The alkali metal chloride electrolytic cell of claim 2 wherein the noble metal coating is selected from the group consisting of platinum, ruthenium, rhodium, palladium, osmium, iridium, and oxides thereof.
Claim 3
Dependent Claim
34 words
The alkali metal chloride electrolytic cell of claim 2 wherein the said noble metal coating comprises a mixture of at least one noble metal oxide and at least one oxide of a non-noble metal.
Claim 4
Dependent Claim
37 words
The alkali metal chloride electrolytic cell of claim 2 wherein the noble metal coating has dispersed therein an oxide of a metal chosen from the group consisting of chromium, manganese, iron, cobalt, nickel, molybdenum, and mixtures thereof.
Claim 5
Dependent Claim
39 words
The alkali metal chloride electrolytic cell of claim 2 wherein the said noble metal coating has disposed above it an oxide of a metal chosen from the group consisting of chromium, manganese, iron, cobalt, nickel, molybdenum, and mixtures thereof.
Claim 6
Dependent Claim
38 words
In an alkali metal chloride electrolytic cell having an anode, a cathode, and a means for imposing an electromotive force therebetween, the improvement wherein the anode comprises a titanium hydride substrate having an electroconductive, chemically resistant coating thereon.
Claim 7
Dependent Claim
19 words
The alkali metal chloride cell of claim 7 wherein the electroconductive, chemically resistant coating comprises a noble metal coating.
Claim 8
Dependent Claim
31 words
The alkali metal chloride electrolytic cell of claim 7 wherein the electroconductive, chemically resistant coating is selected from the group consisting of platinum, ruthenium, rhodium, palladium, osmium, iridium, and oxides thereof.
Claim 9
Dependent Claim
35 words
The alkali metal chloride electrolytic cell of claim 7 wherein the said electroconductive, chemically resistant coating comprises a mixture of at least one noble metal oxide and at least one oxide of a non-noble metal.
Claim 10
Dependent Claim
38 words
The alkali metal chloride electrolytic cell of claim 7 wherein the electroconductive, chemically resistant coating has dispersed therein an oxide of a metal chosen frOm the group consisting of chromium, manganese, iron, cobalt, nickel, molybdenum, and mixtures thereof.
Claim 11
Dependent Claim
39 words
The alkali metal chloride electrolytic cell of claim 7 wherein the electroconductive, chemically resistant coating has disposed above it an oxide of a metal chosen from the group consisting of chromium, manganese, iron, cobalt, nickel, molybdenum, and mixtures thereof.
References Cited (Backward Citations)
US3410784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |