US4211628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic bath assembly
Assignee: Kureha Corp
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Filing: 1978-09-21
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Granted: 1980-07-08
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Expires: 1998-09-21
Abstract
Abstract An electrolytic bath vessel assembly adapted for use to electrolytic treatment of salt water for the manufacture of caustic soda solution. The assembly includes a unique arrangement of bar electrodes, equidistantly positioned in parallel and at the both sides of a finely pored separating membrane.
Inventors
- 👤 Kanichiro Obata
- 👤 Yoshikazu Kokubu
- 👤 Isao Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:15
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B1/00; C25B1/01; C25B1/34; C25B1/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
An electrolytic bath vessel assembly, characterized by the provision of two electrode groups as an anode and a cathode arranged at the both sides of a fine-pored separating membrane, each of said groups comprising a number of equidistantly parallely arranged bar electrodes, preferably round bars, said two electrode groups being positioned in an opposed state relative to each other, wherein the anodic and cathodic bar electrodes are arranged in a zigzag arrangement.
Claim 2
Dependent Claim
72 words
An electrolytic bath vessel assembly, characterized by the provision of two electrode groups as an anode and a cathode arranged at the both sides of a fine-pored separating membrane, each of said groups comprising a number of equidistantly parallely arranged bar electrodes, preferably round bars, said two electrode groups being positioned in an opposed state relative to each other, wherein the anodic and cathodic bar electrodes are arranged in a zigzag arrangement.
Claim 3
Dependent Claim
18 words
The electrolytic bath vessel assembly of claim 1 characterized by that all the bar electrodes are arranged vertically.
Claim 4
Dependent Claim
18 words
The electrolytic bath vessel assembly of claim 1, characterized by that all the bar electrodes are arranged horizontally.
Claim 5
Dependent Claim
72 words
The electrolytic bath vessel assembly of claim 1, wherein the bar electrodes in each group are arranged with equal interbar distances therebetween and each group being arranged in relation to said membrane such that the apparent interpolar distance between the anode and the cathode is smaller than the thickness of said separating membrane, thereby forming said separating membrane into a wavy zigzag shape in alternate contact with said two groups of electrodes.
Claim 6
Dependent Claim
21 words
The electrolytic bath vessel assembly according to claim 1, characterized by that the membrane is composed of an ion exchange membrane.
References Cited (Backward Citations)
US653933A
Cited
GB1434334A
Cited
GB1434335A
Cited
US3804739A
Cited
US4013525A
Cited
GB1479444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |