US4000048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel cathode
Assignee: Diamond Shamrock Technologies SA
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Filing: 1975-10-30
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Granted: 1976-12-28
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Expires: 1995-10-30
Abstract
Abstract A cathode for electrolysis reactions comprising an electrically conductive electrode base having an outer coating on at least a portion of its exterior of an alloy of palladium and either silver or lead, process for the preparation of said cathodes and a method of electrolysis using said cathode.
Inventors
- 👤 Giuseppe Bianchi
- 👤 Antonio Nidola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:40
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C25B1/04; C25B11/00; C25B11/04; C25B11/051; C25B11/073; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A bipolar electrode comprising a valve metal base having on one portion thereof a cathodic coating of an alloy of palladium and a member of the group consisting of silver and lead and on a second portion thereof an anodic coating consisting of a member of the group consisting of a platinum group metal, a platinum group metal oxide and a mixed crystal material of a valve metal oxide and a platinum group metal oxide.
Claim 2
Dependent Claim
75 words
A bipolar electrode comprising a valve metal base having on one portion thereof a cathodic coating of an alloy of palladium and a member of the group consisting of silver and lead and on a second portion thereof an anodic coating consisting of a member of the group consisting of a platinum group metal, a platinum group metal oxide and a mixed crystal material of a valve metal oxide and a platinum group metal oxide.
Claim 3
Dependent Claim
17 words
The electrode of claim 1 wherein the palladium alloy contains 20 to 43% by weight of silver.
Claim 4
Dependent Claim
17 words
The electrode of claim 1 wherein the palladium alloy contains 10 to 35% by weight of lead.
Claim 5
Dependent Claim
12 words
The electrode of claim 1 wherein the valve metal base is titanium.
Claim 6
Dependent Claim
40 words
A method of electrolysis of a sea water electrolyte comprising passing an electrolysis current from an outside source through an electrolysis cell containing the electrolyte and having an anode, at least one bipolar electrode of claim 1 and a cathode.
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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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |