US4278741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous cell
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1980-05-30
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Granted: 1981-07-14
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Expires: 2000-05-30
Abstract
Abstract A nonaqueous cell comprising a liquid cathode-electrolyte an active metal anode, such as lithium, a cathode collector, such as carbon, and a separator disposed between said anode and said cathode collector and wherein the surface of the separator facing the anode is coated with a vinyl polymer film.
Inventors
- 👤 Tibor Kalnoki-Kis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:25
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M50/00; H01M50/40; H01M50/46; H01M2300/00; H01M2300/0017
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
54 words
A nonaqueous cell comprising an ionically conductive cathode-electrolyte solution comprising a solute dissolved in an active liquid cathode; an active metal anode; a cathode collector; a separator disposed between the anode and the cathode collector; and wherein at least a portion of the surface of the separator is coated with a vinyl polymer film.
Claim 2
Dependent Claim
54 words
A nonaqueous cell comprising an ionically conductive cathode-electrolyte solution comprising a solute dissolved in an active liquid cathode; an active metal anode; a cathode collector; a separator disposed between the anode and the cathode collector; and wherein at least a portion of the surface of the separator is coated with a vinyl polymer film.
Claim 3
Dependent Claim
57 words
The nonaqueous cell of claim 1 wherein the vinyl polymer is selected from the group consisting of homopolymers of vinyl or vinylidene chloride, and copolymers containing vinyl chloride or vinylidene chloride having at least one monomer copolymerized therein selected from the group consisting of vinyl esters, dibasic acids, diesters of dibasic acids and monoesters of dibasic acids.
Claim 4
Dependent Claim
30 words
The nonaqueous cell of claim 1 wherein the vinyl polymer is selected from the group consisting of vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinyl acetate-dibasic acid copolymers and vinyl chloride homopolymers.
Claim 5
Dependent Claim
35 words
The nonaqueous cell of claim 1, 2 or 3 wherein the amount of the vinyl polymer film on the separator ranges from about 0.7 to about 3.5 grams per square meter of projected unifacial area.
Claim 6
Dependent Claim
34 words
The nonaqueous cell of claim 1, 2 or 3 wherein the amount of the vinyl polymer film on the separator ranges from about 1.5 to 1.8 grams per square meter of projected unifacial area.
Claim 7
Dependent Claim
31 words
The nonaqueous cell of claim 1, 2 or 3 wherein the cathode electrolyte contains a material selected from the the group consisting of lithium sulfide and sulfur monochloride and mixtures thereof.
Claim 8
Dependent Claim
38 words
The nonaqueous cell of claim 1, 2 or 3 wherein cathode-electrolyte contains at least one liquid oxyhalide selected from the group consisting of thionyl chloride, sulfuryl chloride, phosphorous oxychloride, thionyl bromide, chromyl chloride, vanadyl tribromide and selenium oxychloride.
Claim 9
Dependent Claim
25 words
The nonaqueous cell of claim 7 wherein the at least one liquid oxyhalide is selected from the group consisting of thionyl chloride and sulfuryl chloride.
Claim 10
Dependent Claim
13 words
The nonaqueous cell of claim 7 wherein the cathode-electrolyte contains an inorganic cosolvent.
Claim 11
Dependent Claim
13 words
The nonaqueous cell of claim 7 wherein the cathode-electrolyte contains an organic cosolvent.
Claim 12
Dependent Claim
18 words
The nonaqueous cell of claim 7 wherein the anode is lithium and the liquid oxyhalide is thionyl chloride.
Claim 13
Dependent Claim
18 words
The nonaqueous cell of claim 7 wherein the anode is lithium and the liquid oxyhalide is sulfuryl chloride.
Claim 14
Dependent Claim
25 words
The nonaqueous cell of claim 1, 2 or 3 wherein the anode is selected from the group consisting of lithium, sodium, calcium, potassium and aluminum.
Claim 15
Dependent Claim
24 words
The nonaqueous cell of claim 1, 2 or 3 wherein solute is a complex salt of a Lewis acid and an inorganic ionizable salt.
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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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |