US4608144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode and electrolytic cell
Assignee: Imperial Chemical Industries Ltd
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Filing: 1985-03-11
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Granted: 1986-08-26
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Expires: 2005-03-11
Abstract
Abstract An electrode comprising a base member having on at least one face thereof a plurality of first major channels closed at one end and provided at the other end thereof with means for feeding liquors thereto, a plurality of second major channels closed at one end and provided at the other end thereof with means for removing liquors therefrom, and a plurality of minor channels of smaller cross-section than the major channels and positioned between the first major channels and the second major channels and providing means for liquors to flow between the first major channels and the second major channels. Also, an electrolytic cell comprising such an electrode.
Inventors
- 👤 Brian J. Darwent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:21
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B9/00; C25B9/70; C25B9/73; C25B9/75; C25B9/77
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
100 words
An electrode comprising a base member having on at least one face thereof a plurality of first major channels closed at one end and provided at the other end thereof with means for feeding liquors thereto, a plurality of second major channels closed at one end and provided at the other end thereof with means for removing liquors therefrom, and a plurality of minor channels of smaller cross-section than said major channels and positioned between said first major channels and second major channels and providing means for liquor to flow between said first major channels and said second major channels.
Claim 2
Dependent Claim
100 words
An electrode comprising a base member having on at least one face thereof a plurality of first major channels closed at one end and provided at the other end thereof with means for feeding liquors thereto, a plurality of second major channels closed at one end and provided at the other end thereof with means for removing liquors therefrom, and a plurality of minor channels of smaller cross-section than said major channels and positioned between said first major channels and second major channels and providing means for liquor to flow between said first major channels and said second major channels.
Claim 3
Dependent Claim
28 words
An electrode as claimed in claim 1 in which each of said first major channels and each of said second major channels are closed at one end thereof.
Claim 4
Dependent Claim
31 words
An electrode as claimed in claim 1 or claim 2 in which the base member is in the form of a plate having major and minor channels on one face thereof.
Claim 5
Dependent Claim
31 words
An electrode as claimed in claim 1 or claim 2 in which the base member is in the form of a plate having major and minor channels on both faces thereof.
Claim 6
Dependent Claim
37 words
An electrode as claimed in claim 1 in which at least some of the major channels and/or at least some of the minor channels are open lengthwise thereof so as to present an open face lengthwise thereof.
Claim 7
Dependent Claim
26 words
An electrode as claimed in claim 5 in which all of the minor channels are open lengthwise thereof so as to present open faces lengthwise thereof.
Claim 8
Dependent Claim
29 words
An electrode as claimed in claim 5 or claim 6 in which all of the major channels are open lengthwise thereof so as to present open faces lengthwise thereof.
Claim 9
Dependent Claim
18 words
An electrode as claimed in claim 1 in which the major channels are substantially parallel to each other.
Claim 10
Dependent Claim
19 words
An electrode as claimed in claim 1 in which the minor channels are positioned substantially parallel to each other.
Claim 11
Dependent Claim
31 words
An electrode as claimed in claim 1 in which each first major channel is connected to at least one adjacent second major channel by means of a plurality of minor channels.
Claim 12
Dependent Claim
38 words
An electrode as claimed in claim 1 in which the electrode has a wave-like profile in which the troughs of the wave-like profile provide the major channels and the peaks of the wave-like profile separate adjacent major channels.
Claim 13
Dependent Claim
24 words
An electrode as claimed in claim 11 in which the minor channels are slots or grooves positioned at the peaks of the wave-like profile.
Claim 14
Dependent Claim
30 words
An electrode as claimed in claim 1 or 12 in which the electrode is made of a metal or alloy or has an outer surface of a metal or alloy.
Claim 15
Dependent Claim
18 words
An electrode as claimed in claim 1 or claim 13 in which the electrode comprises a plastics material.
Claim 16
Dependent Claim
143 words
An electrolytic cell, comprising: at least one anode; at least one cathode; and a separator positioned between and separating from a said cathode each said anode which adjoins a respective said cathode; at least one of said anode and cathode being provided as an electrode comprising: a base member having on at least one face thereof a plurality of first major channels closed at one end and provided at the other end thereof with means for feeding liquors thereto; a plurality of second major channels closed at one end and provided at the other end thereof with means for removing liquors therefrom; and a plurality of minor channels of smaller cross-section than said major channels and positioned between said first major channels and second major channels and providing means for liquor to flow between said first major channels and said second major channels.
Claim 17
Dependent Claim
143 words
An electrolytic cell, comprising: at least one anode; at least one cathode; and a separator positioned between and separating from a said cathode each said anode which adjoins a respective said cathode; at least one of said anode and cathode being provided as an electrode comprising: a base member having on at least one face thereof a plurality of first major channels closed at one end and provided at the other end thereof with means for feeding liquors thereto; a plurality of second major channels closed at one end and provided at the other end thereof with means for removing liquors therefrom; and a plurality of minor channels of smaller cross-section than said major channels and positioned between said first major channels and second major channels and providing means for liquor to flow between said first major channels and said second major channels.
Claim 18
Dependent Claim
93 words
An electrolytic cell as claimed in claim 15, in which: said electrolytic cell includes means for feeding liquors to said first major channels and means for removing liquors from said second major channels; and the said electrode is so positioned in an electrolytic cell that: said major channels are positioned substantially vertically, said means for feeding liquors to said first major channels is at or near the lower end of said electrode, and said means for removing liquors from the second major channels is at or near the upper end of said electrode.
Claim 19
Dependent Claim
39 words
An electrolytic cell as claimed in claim 16, in which: said electrode has a wave-like profile in which the troughs of the wave-like profile provide the major channels and the peaks of the wave-like profile separate adjacent major channels.
Claim 20
Dependent Claim
30 words
An electrolytic cell as claimed in claim 17, in which: said minor channels are provided in the form of slots or grooves connecting troughs across peaks of said wave-like profile.
Claim 21
Dependent Claim
25 words
An electrolystic cell as claimed in claim 18 in which said electrode is provided with a metallic outer surface on a core of plastics material.
Claim 22
Dependent Claim
34 words
An electrolytic cell as claimed in any one of claims 15, 16, 17, 18 or 19 in which: each said anode and each said cathode is provided in the form of a said electrode.
Claim 23
Dependent Claim
67 words
An electrolytic cell as claimed in claim 20 in which the major channels on the electrodes which serve as anodes and the major channels on the electrodes which serve as cathodes are so positioned that that part of the anode which is between and which separates adjacent major channels on the anode is positioned opposite to and mates with a major channel on the cathode adjacent thereto.
Claim 24
Dependent Claim
16 words
An electrolytic cell as claimed in claim 21 in which the separator is an ion-exchange membrane.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |