Patent US4498225A successfully refreshed from Google Patents.
US4765798A
Expired / Lapsed
US
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Method of adding electrolyte to electrochemical cells
Assignee: Yardney Technical Products Inc
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Filing: 1987-10-20
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Granted: 1988-08-23
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Expires: 2007-10-20
Abstract
Abstract A liquid electrolyte solution is added to porous components of an electrochemical cell prior to assembly. The electrolyte solution is frozen and all the components are assembled into a sealed cell. The electrolyte solution is then allowed to melt.
Inventors
- 👤 David C. Batson
- 👤 Ronald E. Barth
- 👤 Franz Goebel
- 👤 Peter B. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:47
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
59 words
A method of adding liquid electrolyte solution to an electrochemical cell during assembly comprising the steps of: (a) providing one or more porous cell components; (b) wetting said porous cell components with a liquid electrolyte; (c) freezing said electrolyte; (d) assembling said porous cell components with other cell components into a cell; and (e) allowing said electrolyte to unfreeze.
Claim 2
Independent Claim
59 words
A method of adding liquid electrolyte solution to an electrochemical cell during assembly comprising the steps of: (a) providing one or more porous cell components; (b) wetting said porous cell components with a liquid electrolyte; (c) freezing said electrolyte; (d) assembling said porous cell components with other cell components into a cell; and (e) allowing said electrolyte to unfreeze.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein said porous cell components are a carbon cathode current collector and a glass paper separator.
Claim 4
Dependent Claim
16 words
The method of claim 2 where said liquid electrolyte solution includes lithium tetrachloraluminate and thionyl chloride.
Claim 5
Dependent Claim
26 words
The method of claim 1 which comprises the additional step of maintaining said cell components at a below the freezing point of said electrolyte during assembly.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein said porous cell components are a carbon cathode current collector and a glass paper separator.
Claim 7
Dependent Claim
16 words
The method of claim 5 where said liquid electrolyte solution includes lithium tetrachloraluminate and thionyl chloride.
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |