US4551267A
Expired / Lapsed
US
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Electrically conductive plastic complex material
Assignee: Meidensha Corp
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Filing: 1984-01-26
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Granted: 1985-11-05
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Expires: 2004-01-26
Abstract
Abstract Described is an electrode formed from a composition consisting essentially of a base resin polymer, carbon black and graphite, with adsorptive active carbon added thereto. The electrode is capable of suppressing halogen diffusion in the metal-halogen battery for improving its energy efficiency.
Inventors
- 👤 Kazuo Fushimi
- 👤 Hirokazu Tsunakawa
- 👤 Kunio Yonahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K3/02; C08K3/04; C08K3/20; C08K3/22; C08K3/34; C08K3/36; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/668; H01M4/86; H01M4/96; C01; C01P; C01P2006/00; C01P2006/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
An electrically conductive plastic complex material for use as a halogen battery electrode, said complex material comprising base resin polymer, carbon black and graphite, said base resin polymer being selected from the group consisting of polyethylene, polypropylene and ethylene-propylene copolymer, wherein said material comprises 50 weight percent of said base resin polymer and 20 weight percent of said carbon black, and wherein a part of said graphite is substituted by adsorptive active carbon in order to control halogen diffusion through the electrode, said adsorptive active carbon being in the range of 1 to 30 weight percent of said material.
Claim 2
Dependent Claim
99 words
An electrically conductive plastic complex material for use as a halogen battery electrode, said complex material comprising base resin polymer, carbon black and graphite, said base resin polymer being selected from the group consisting of polyethylene, polypropylene and ethylene-propylene copolymer, wherein said material comprises 50 weight percent of said base resin polymer and 20 weight percent of said carbon black, and wherein a part of said graphite is substituted by adsorptive active carbon in order to control halogen diffusion through the electrode, said adsorptive active carbon being in the range of 1 to 30 weight percent of said material.
Claim 3
Dependent Claim
42 words
An electrically conductive plastic complex material according to claim 1, wherein said active carbon is a powder selected from the group consisting of pulverulent, granulated or crushed powder or spherical carbon and wherein said active carbon is activated with chemicals or steam.
Claim 4
Dependent Claim
21 words
An electrically conductive plastic complex material according to claim 1, wherein said metal halogen battery electrode is a zinc-bromide battery electrode.
Claim 5
Dependent Claim
29 words
The electrically conductive plastic complex material according to claim 1, wherein the base resin polymer, carbon black, graphite and adsorptive active carbon have a weight ratio of about 50:20:20:10.
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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |