US3658685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination electrode
Assignee: Phillips Petroleum Co
•
Filing: 1970-02-09
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Granted: 1972-04-25
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Expires: 1990-02-09
Abstract
Abstract A combination electrode comprising a porous element, e.g., porous carbon, and a metal element in contact with an outer exposed surface of said porous element.
Inventors
- 👤 William V Childs
- 👤 Forrest N Ruehlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/27; C25B3/28; C25B3/01; C25B3/11
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
An electrode in accordance with claim 1 wherein: said porous element is generally cylindrical in shape; said metal element surrounds and is in contact with the major portion of the outer wall of said cylinder; and said conduit means extends into and together with said wall of said chamber defines said chamber in one end portion of said porous element.
Claim 2
Dependent Claim
100 words
An electrode in accordance with claim 1 wherein: said porous element is generally triangular in shape; said chamber is a first chamber formed in a first end of said porous element; said conduit means comprises a first conduit connected to said first end of said porous element; a second chamber is formed in a second end of said porous element; a second conduit means is connected to said second end of said porous element in communication with said second chamber; and said metal element is in contact with the outer exposed surface of at least one side of said triangle.
Claim 3
Dependent Claim
17 words
An electrode in accordance with claim 1 wherein said porous element comprises porous carbon impregnated with nickel.
Claim 4
Dependent Claim
43 words
An electrode in accordance with claim 1 wherein said metal element comprises a metal selected from the group consisting of nickel, iron, cobalt, carbon steel, stainless steel, and alloys of nickel with other metals which contain at least 5 weight per cent nickel.
Claim 5
Dependent Claim
53 words
An electrode in accordance with claim 1 wherein: said porous carbon element has the general shape of a cylinder; said metal element comprises a metal screen surrounding and in contact with the outer wall of said cylinder; and means are provided for holding said metal element in contact with said porous carbon elemenT.
Claim 6
Dependent Claim
53 words
An electrode in accordance with claim 1 wherein said porous carbon element comprises a generally rectangular-shaped plate of porous carbon; said metal element comprises a metal screen in contact with an outer exposed surface of said plate; and means are provided for holding said metal element in contact with said porous carbon element.
Claim 7
Dependent Claim
57 words
An electrode in accordance with claim 1 wherein said porous carbon element has the general shape of a triangle; said metal element comprises a metal screen in contact with the outer exposed surface of at least one side of said triangle; and means are provided for holding said metal element in contact with said porous carbon element.
Claim 8
Dependent Claim
37 words
An electrode in accordance with claim 1 wherein said porous carbon element has a permeability within the range of from 0.5 to 75 darcys and average pore diameters within the range of from 1 to 150 microns.
Claim 9
Dependent Claim
39 words
An electrode in accordance with claim 9 wherein said permeability is within the range of from about 2 to about 30 darcys and said average pore diameter is within the range of from about 20 to about 75 microns.
References Cited (Backward Citations)
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US2358419A
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US3017336A
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US3298940A
Cited
US3236759A
Cited
US3393249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |