Patent US4090931A successfully refreshed from Google Patents.
US4090931A
Expired / Lapsed
US
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Anode-structure for electrolysis
Assignee: Tokuyama Corp
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Filing: 1976-07-01
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Granted: 1978-05-23
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Expires: 1996-07-01
Abstract
Abstract An anode-structure for liquid-phase electrolysis comprising an anode and a polymer containing a cation exchange group, said polymer being laminated in the form of a film on one surface of said anode.
Inventors
- 👤 Kensuke Motani
- 👤 Toshikatsu Sata
- 👤 Masakatsu Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:52
CPC Classifications
C; C25; C25B; C25B11/00; C25B1/00; C25B1/01; C25B1/34; C25B1/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
An anode-structure for liquid-phase electrolysis of an aqueous solution of an alkali metal salt comprising an anode having a curved surface and a polymer containing cation exchange groups, said polymer being laminated in the form of a film on the curved surface of said anode.
Claim 2
Dependent Claim
45 words
An anode-structure for liquid-phase electrolysis of an aqueous solution of an alkali metal salt comprising an anode having a curved surface and a polymer containing cation exchange groups, said polymer being laminated in the form of a film on the curved surface of said anode.
Claim 3
Dependent Claim
14 words
The anode-structure of claim 1 wherein said polymer is a fluorine-containing ion exchange resin.
Claim 4
Dependent Claim
12 words
The anode-structure of claim 1 wherein the anode is a finger-type electrode.
Claim 5
Dependent Claim
33 words
The anode-structure of claim 1 wherein the curved surface of the anode is electrochemically inactive and the polymer is laminated in the form of a film on the inactive surface of said anode.
Claim 6
Dependent Claim
18 words
The anode-structure of claim 1 wherein the polymer is laminated on the anode by melt-adhesion of the polymer.
Claim 7
Dependent Claim
24 words
The anode-structure of claim 1 wherein the polymer is laminated by directly forming a film of the polymer on one surface of the anode.
Claim 8
Dependent Claim
32 words
In an electrolytic cell equipped with an anode, a cathode and a cation exchange membrane completely separating the anode and cathode, the improvement comprising as said anode, the anode-structure of claim 1.
Claim 9
Dependent Claim
25 words
In a process for electrolysis of an aqueous solution of an alkali metal salt, the improvement using the anode-structure of claim 1 as the anode.
References Cited (Backward Citations)
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Cited
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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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |