US4101395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-structure for electrolysis
Assignee: Tokuyama Corp
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Filing: 1976-08-30
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Granted: 1978-07-18
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Expires: 1996-08-30
Abstract
Abstract A cathode-structure for liquid-phase electrolysis comprises a cathode and a polymer containing a cation exchange group, with the polymer being laminated in the form of a film on one surface of the cathode.
Inventors
- 👤 Kensuke Motani
- 👤 Toshikatsu Sata
- 👤 Masakatsu Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:03
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
A cathode-structure for liquid-phase electrolysis of an aqueous solution of an alkali metal salt comprising a perforated cathode and a polymer containing cation exchange groups in its molecule, said cathode being electrochemically inactivated on one surface, thereof said polymer being laminated in the form of a film on said electrochemically inactivated surface of said cathode.
Claim 2
Dependent Claim
55 words
A cathode-structure for liquid-phase electrolysis of an aqueous solution of an alkali metal salt comprising a perforated cathode and a polymer containing cation exchange groups in its molecule, said cathode being electrochemically inactivated on one surface, thereof said polymer being laminated in the form of a film on said electrochemically inactivated surface of said cathode.
Claim 3
Dependent Claim
14 words
The cathode-structure of claim 1 wherein said polymer is a fluorine-containing ion exchange resin.
Claim 4
Dependent Claim
13 words
The cathode-structure of claim 1 wherein the surface of the cathode is curved.
Claim 5
Dependent Claim
12 words
The cathode-structure of claim 1 wherein the cathode is a finger-type electrode.
Claim 6
Dependent Claim
23 words
The cathode-structure of claim 1 wherein the polymer is laminated on the electrochemically inactivated surface of the cathode by melt-adhesion of the polymer.
Claim 7
Dependent Claim
26 words
The cathode-structure of claim 1 wherein the polymer is laminated by directly forming a film of the polymer on said electrochemically inactivated surface of the cathode.
Claim 8
Dependent Claim
10 words
An electrolytic cell equipped with the cathode-structure of claim 1.
Claim 9
Dependent Claim
20 words
A process for electrolysis of an aqueous solution of an alkali metal salt using the cathode structure of claim 1.
Claim 10
Dependent Claim
29 words
The cathode structure of claim 1 wherein said electrochemically inactivated surface of the cathode is formed by coating said one surface of the cathode with a resin or paint.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |