US4310608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator incorporating liquid layer
Assignee: Fuelcell Energy Inc
•
Filing: 1980-11-06
•
Granted: 1982-01-12
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Expires: 2000-11-06
Abstract
Abstract A separator for an electrochemical cell comprising a container having opposing sides each formed from a layer of solid microporous material and a liquid polymer solution disposed within the container between said layers.
Inventors
- 👤 Mark G. Dodin
- 👤 Allen Charkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:03
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/489; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
31 words
An electrochemical cell comprising: positive and negative electrodes; a separator for separating said electrodes comprising: a container comprised of a microporous material; and a liquid polymer solution disposed in said container.
Claim 2
Dependent Claim
31 words
An electrochemical cell comprising: positive and negative electrodes; a separator for separating said electrodes comprising: a container comprised of a microporous material; and a liquid polymer solution disposed in said container.
Claim 3
Dependent Claim
22 words
An electrochemical cell in accordance with claim 1 wherein: said container has opposing sides each comprised of a layer of said material.
Claim 4
Dependent Claim
20 words
An electrochemical cell in accordance with claim 2 wherein: said container is in adjacent relationship to one of said electrodes.
Claim 5
Dependent Claim
20 words
An electrochemical cell in accordance with claim 3 wherein: said one electrode is disposed within said container between said layers.
Claim 6
Dependent Claim
32 words
An electrochemical cell in accordance with claim 3 wherein: said one electrode is disposed exterior of said container, a layer of said container being connected to the periphery of said one electrode.
Claim 7
Dependent Claim
15 words
An electrochemical cell in accordance with 1 further comprising: an electrolyte disposed between said electrodes.
Claim 8
Dependent Claim
15 words
An electrochemical cell in accordance with 1 further comprising: an electrolyte disposed between said electrodes.
Claim 9
Dependent Claim
17 words
An electrochemical cell in accordance with claim 6 wherein: said polymer solution is insoluble in said electrolyte.
Claim 10
Dependent Claim
18 words
An electrochemical cell in accordance with claim 6 wherein: said polymer solution is non-oxidizable when in said cell.
Claim 11
Dependent Claim
18 words
An electrochemical cell in accordance with claim 6 wherein: said polymer solution is non-precipitating when in said cell.
Claim 12
Dependent Claim
15 words
An electrochemical cell in accordance with 6 wherein: said material is stable in said electrolyte.
Claim 13
Dependent Claim
15 words
An electrochemical cell in accordance with 6 wherein: said material is stable in said electrolyte.
Claim 14
Dependent Claim
22 words
An electrochemical cell in accordance with claim 6 wherein: said polymer solution contains as a solvent the solvent contained in said electrolyte.
Claim 15
Dependent Claim
13 words
An electrochemical cell in accordance with claim 11 wherein: said solvent is water.
Claim 16
Dependent Claim
31 words
An electrochemical cell in accordance with claim 1 wherein: said polymer in said polymer solution is selected from the group consisting of cellulosic polymers, vinyl acetate, polyvinyl alcohol, and polyethylene oxide.
Claim 17
Dependent Claim
16 words
An electrochemical cell in accordance with claim 1 wherein: said material is a polymer based film.
Claim 18
Dependent Claim
24 words
An electrochemical cell in accordance with claim 1 wherein: said film is selected from the group consisting of nylon, polyethylene, polypropylene and polyvinyl chloride.
Claim 19
Dependent Claim
22 words
An electrochemical cell in accordance with claim 1 further comprising: a porous support containing said polymer solution and disposed in said container.
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) | 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 |