US4310404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic bath vessel elements
Assignee: Kureha Corp
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Filing: 1979-11-15
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Granted: 1982-01-12
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Expires: 1999-11-15
Abstract
Abstract The invention resides in an electrolytic cell element representing a frame structure defining partially an anode chamber and a cathode chamber. The frame is composed of a carbon fiber-high polymer composite material.
Inventors
- 👤 Hiroaki Satoh
- 👤 Yoshikazu Kokubu
- 👤 Kiyoshi Kitagawa
- 👤 Isao Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:17
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
An electrolytic cell element comprising a frame structure partially defining an anode chamber and a cathode chamber, said frame structure being composed of a carbon fiber-polymer composite material wherein said polymer is polypropylene or a copolymer of polypropylene, the polymer being chemically modified with an organo-carboxylic acid to improve the affinity of said carbon fiber to said polymer.
Claim 2
Dependent Claim
58 words
An electrolytic cell element comprising a frame structure partially defining an anode chamber and a cathode chamber, said frame structure being composed of a carbon fiber-polymer composite material wherein said polymer is polypropylene or a copolymer of polypropylene, the polymer being chemically modified with an organo-carboxylic acid to improve the affinity of said carbon fiber to said polymer.
Claim 3
Dependent Claim
18 words
The cell element of claim 1, wherein the cell element is a sodium chloride aqueous solution electrolysis cell.
Claim 4
Dependent Claim
15 words
The cell element of claim 1, wherein said carbon fiber content is 5-60 weight percent.
Claim 5
Dependent Claim
15 words
The cell element of claim 1, wherein said carbon fiber content is 10-40 weight percent.
Claim 6
Dependent Claim
56 words
An electrolytic cell element comprising a frame structure partially defining an anode chamber and a cathode chamber, said frame structure being composed of a carbon fiber-polymer composite material wherein said polymer is polypropylene or a copolymer of polypropylene, wherein said carbon fiber is surface treated to improve the affinity of said carbon fibers to said polymer.
Claim 7
Dependent Claim
56 words
An electrolytic cell element comprising a frame structure partially defining an anode chamber and a cathode chamber, said frame structure being composed of a carbon fiber-polymer composite material wherein said polymer is polypropylene or a copolymer of polypropylene, wherein said carbon fiber is surface treated to improve the affinity of said carbon fibers to said polymer.
Claim 8
Dependent Claim
14 words
The cell element of claim 5, wherein the carbon fiber content is 5-60 wt.%.
Claim 9
Dependent Claim
15 words
The cell element of claim 5, wherein said carbon fiber is surface-treated with a silane.
Claim 10
Dependent Claim
13 words
The cell element of claim 7, wherein said silane is aminopropyltrioxysilane or vinylethoxysilane.
Claim 11
Dependent Claim
31 words
The cell element of claim 5, wherein said composite material further includes a chemically modified polypropylene or its copolymer to further improve the affinity of said carbon fiber to said polymer.
Claim 12
Dependent Claim
18 words
The cell element of claim 9, wherein said chemically modified polymer is chemically modified with an organo-carboxylic acid.
Claim 13
Dependent Claim
42 words
The electrolytic cell element of claims 9 or 1, wherein said frame structure composite material is further composed of a blend of said chemically modified polymer, with a polymer selected from the group consisting of polypropylene, copolymers of polypropylene, and blends thereof.
Claim 14
Dependent Claim
15 words
The cell element of claim 5, wherein said carbon fiber content is 5-60 weight percent.
Claim 15
Dependent Claim
14 words
The cell element of claim 5, wherein said carbon fiber content is 10-40 percent.
Claim 16
Dependent Claim
25 words
The cell element of claims 1 or 5, wherein said carbon fiber has a diameter of 1-30 microns and an aspect ratio larger than 10.
References Cited (Backward Citations)
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Cited
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Cited
GB1251641A
Cited
GB1330485A
Cited
US3752757A
Cited
GB1539987A
Cited
US4053385A
Cited
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Cited
US4124478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |