US4652356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange membrane and electrolytic cell using thereof
Assignee: AGC Inc
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Filing: 1982-03-05
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Granted: 1987-03-24
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Expires: 2002-03-05
Abstract
Abstract A cation exchange membrane comprising a gas and liquid permeable porous non-electrode layer on at least one surface of said membrane and an electrolytic cell using thereof, wherein said porous layer is formed by many conductive or non-conductive particles or particle groups which are partially or wholly discontinuously bonded on said membrane.
Inventors
- 👤 Yoshio Oda
- 👤 Takeshi Morimoto
- 👤 Kohji Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:41
CPC Classifications
C; C25; C25B; C25B13/00; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2275; C08J5/2281; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
49 words
A cation exchange membrane for electrolysis which comprises a gas and liquid permeable porous non-electrode layer on at least one surface of said membrane wherein said porous layer is formed by many conductive or non-conductive particles or particle groups which are partially or wholly discontinuously bonded on said membrane.
Claim 2
Dependent Claim
49 words
A cation exchange membrane for electrolysis which comprises a gas and liquid permeable porous non-electrode layer on at least one surface of said membrane wherein said porous layer is formed by many conductive or non-conductive particles or particle groups which are partially or wholly discontinuously bonded on said membrane.
Claim 3
Dependent Claim
24 words
The cation exchange membrane according to claim 1 wherein said particles and particle groups are discontinuously bonded in a continuous pattern on said membrane.
Claim 4
Dependent Claim
30 words
The cation exchange membrane according to claim 1 or 2 wherein said particles or particle groups are bonded at a rate of 0.001 to 5 mg/cm 2 on said membrane.
Claim 5
Dependent Claim
37 words
The cation exchange membrane according to claim 1 or 2 wherein said conductive or non-conductive particles are made of an inorganic or organic material having corrosion resistance to an electrolyte and an evolved gas at an electrode.
Claim 6
Dependent Claim
34 words
The cation exchange membrane according to claim 1, 2, 3 or 4 wherein said particles or particle groups are bonded in the presence of a binder made of a fluorinated polymer on said membrane.
Claim 7
Dependent Claim
51 words
The cation exchange membrane according to claim 1, 2 or 3 wherein said conductive or non-conductive particles are made of a metal in IV-A Group, IV-B Group, V-B Group, ion Group or chromium, manganese or boron or an alloy, an oxide, a hydroxide, a nitride or a carbide of said metal.
Claim 8
Dependent Claim
36 words
The cation exchange membrane according to claim 1, 2, 3, 4 or 5 wherein said membrane has cation exchange groups selected from the group consisting of sulfonic acid groups, carboxylic acid groups and phosphoric acid groups.
Claim 9
Dependent Claim
54 words
An ion exchange membrane cell which comprises an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane which has a gas and liquid permeable porous non-electrode layer formed by many conductive and non-conductive particles or particle groups which are discontinuously bonded on at least one surface of said membrane.
Claim 10
Dependent Claim
54 words
An ion exchange membrane cell which comprises an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane which has a gas and liquid permeable porous non-electrode layer formed by many conductive and non-conductive particles or particle groups which are discontinuously bonded on at least one surface of said membrane.
Claim 11
Dependent Claim
25 words
The ion exchange membrane cell according to claim 8 wherein said particles or particle groups are discontinuously bonded in a continuous pattern on said membrane.
Claim 12
Dependent Claim
31 words
The ion exchange membrane cell according to claim 8 or 9 wherein said particles or particle groups are bonded at a rate of 0.001 to 5 mg/cm 2 on said membrane.
Claim 13
Dependent Claim
32 words
The ion exchange membrane cell according to claim 8, 9 or 10 wherein said conductive or non-conductive particles are made of an inorganic or organic material having corrosion resistance to an electrolyte.
Claim 14
Dependent Claim
37 words
The ion exchange membrane cell according to claim 8, 9, 10, 11 or 12 wherein said membrane has cation exchange groups selected from the group consisting of sulfonic acid groups, carboxylic acid groups and phosphoric acid groups.
Claim 15
Dependent Claim
29 words
The ion exchange membrane cell according to claim 8, 9, 10, 11, 12 or 13 wherein at least one electrode is brought into contact with said ion exchange membrane.
Claim 16
Dependent Claim
40 words
The ion exchange membrane cell according to claim 8 or 13 wherein said electrode is an expanded metal having a major length of 1.0-10 mm and a minor length of 0.5-10 mm and a ratio of opening area of 30-90%.
Claim 17
Dependent Claim
38 words
The ion exchange membrane cell according to claim 8, 13 or 14 wherein plural foraminous electrodes having different ratio of opening area are used and an electrode having smaller ratio of opening area is placed near said membrane.
Claim 18
Dependent Claim
37 words
The ion exchange membrane cell according to claim 8, 9, 10, 11, 12, 12, 13 or 14 which is suitable for electrolysis of water, an acid, a base, an alkali metal halide or an alkali metal carbonate.
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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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |