US4515875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic rechargeable non-aqueous cell
Assignee: Duracell Inc USA
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Filing: 1983-06-30
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Granted: 1985-05-07
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Expires: 2003-06-30
Abstract
Abstract A totally inorganic non-aqueous rechargeable cell having an alkali or alkaline earth metal anode such as of lithium, a sulfur dioxide containing electrolyte and a discharging metal halide cathode, such as of CuCl 2 , CuBr 2 and the like with said metal halide being substantially totally insoluble in SO 2 and admixed with a conductive carbon material.
Inventors
- 👤 William L. Bowden
- 👤 Arabinda N. Dey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:01
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0561; H01M10/0563; H01M10/052; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/582; H01M4/13; H01M4/136; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising, a cathode, an anode of alkali or alkaline earth metal, and an electrolyte comprised of an electrolyte salt dissolved in sulfur dioxide, with said electrolyte being free of organic solvents; characterized in that said cathode is comprised of at least 60% by weight of a cathode active metal halide insoluble in said sulfur dioxide, said metal halide being admixed with a conductive carbon material and wherein said metal halide discharges in preference to said sulfur dioxide.
Claim 2
Dependent Claim
84 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising, a cathode, an anode of alkali or alkaline earth metal, and an electrolyte comprised of an electrolyte salt dissolved in sulfur dioxide, with said electrolyte being free of organic solvents; characterized in that said cathode is comprised of at least 60% by weight of a cathode active metal halide insoluble in said sulfur dioxide, said metal halide being admixed with a conductive carbon material and wherein said metal halide discharges in preference to said sulfur dioxide.
Claim 3
Dependent Claim
16 words
The cell of claim 1 wherein said metal halide is CuCl 2 or CuBr 2 .
Claim 4
Dependent Claim
12 words
The cell of claim 1 wherein said anode is comprised of lithium.
Claim 5
Dependent Claim
14 words
The cell of claim 1 wherein said electrolyte salt is a gallium halide salt.
Claim 6
Dependent Claim
14 words
The cell of claim 1 wherein said electrolyte salt is an aluminum halide salt.
Claim 7
Dependent Claim
64 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising a lithium anode and an electrolyte consisting essentially of LiAlCl 4 dissolved in SO 2 characterized in that said cell contains a cathode comprised of at least 60% by weight of CuCl 2 with said CuCl 2 being admixed with a conductive carbon material and wherein said CuCl 2 discharges in preference to said sulfur dioxide.
Claim 8
Dependent Claim
64 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising a lithium anode and an electrolyte consisting essentially of LiAlCl 4 dissolved in SO 2 characterized in that said cell contains a cathode comprised of at least 60% by weight of CuCl 2 with said CuCl 2 being admixed with a conductive carbon material and wherein said CuCl 2 discharges in preference to said sulfur dioxide.
Claim 9
Dependent Claim
64 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising a lithium anode and an electrolyte consisting essentially of LiGaCl 4 dissolved in SO 2 characterized in that said cell contains a cathode comprised of at least 60% by weight of CuCl 2 with said CuCl 2 being admixed with a conductive carbon material and wherein said CuCl 2 discharges in preference to said sulfur dioxide.
Claim 10
Dependent Claim
64 words
A totally inorganic rechargeable non-aqueous electrochemical cell comprising a lithium anode and an electrolyte consisting essentially of LiGaCl 4 dissolved in SO 2 characterized in that said cell contains a cathode comprised of at least 60% by weight of CuCl 2 with said CuCl 2 being admixed with a conductive carbon material and wherein said CuCl 2 discharges in preference to said sulfur dioxide.
References Cited (Backward Citations)
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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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |