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US4276362A
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US
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Depolarizers for lithium halide batteries
Assignee: MSA Safety Inc
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Filing: 1979-09-07
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Granted: 1981-06-30
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Expires: 1999-09-07
Abstract
Abstract The present invention relates to a depolarizer for use in a lithium halide battery which comprises a halogen and a charge transfer complex consisting of the halogen and an organic component of (a) quaternary amine halide selected from the group consisting of (i) polyvinylalkylpyridinium halide or polyvinylalkylquinolinium halide and (ii) poly [N,N'-dialkyl 1,2 bis (4-pyridinium halide)] ethylene or poly [N-alkyl 1,2 bis (4-pyridinium halide) ethylene] and (b) phenyl methane dyes wherein said halogen is present in an amount of from about 3 to 50 parts by weight for each part of organic component.
Inventors
- 👤 Marilyn J. Harney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:49
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
65 words
A depolarizer for use in a lithium halide battery comprising a charge transfer complex consisting of an organic component and a halogen, the halogen being present in excess of stoichiometric, the organic component being selected from the group consisting of phenyl methane dyes and said halogen being present in an amount of from 3:1 to 50:1 parts (by weight) for each part of organic component.
Claim 2
Dependent Claim
65 words
A depolarizer for use in a lithium halide battery comprising a charge transfer complex consisting of an organic component and a halogen, the halogen being present in excess of stoichiometric, the organic component being selected from the group consisting of phenyl methane dyes and said halogen being present in an amount of from 3:1 to 50:1 parts (by weight) for each part of organic component.
Claim 3
Dependent Claim
81 words
A depolarizer for use in a lithium halide battery comprising a charge transfer complex of an organic component, an absorbent and a halogen, said halogen being present in an amount of from 3:1 to 50:1 parts (by weight) for each part of organic component, and said organic component being selected from the group consisting of polyquaternary amine halides consisting of: (i) polyvinylalkylpyridinium halides or polyvinylalkylquinoline halides and (ii) poly[N-alkyl 1,2 bis (4-pyridinium halide) ethylene] or poly[N,N' dialkyl 1,2 (4-pyridinium halide) ethylene].
Claim 4
Dependent Claim
81 words
A depolarizer for use in a lithium halide battery comprising a charge transfer complex of an organic component, an absorbent and a halogen, said halogen being present in an amount of from 3:1 to 50:1 parts (by weight) for each part of organic component, and said organic component being selected from the group consisting of polyquaternary amine halides consisting of: (i) polyvinylalkylpyridinium halides or polyvinylalkylquinoline halides and (ii) poly[N-alkyl 1,2 bis (4-pyridinium halide) ethylene] or poly[N,N' dialkyl 1,2 (4-pyridinium halide) ethylene].
Claim 5
Dependent Claim
15 words
A depolarizer as set forth in claim 2 wherein said organic component is polyvinylpropylpyridinium iodide.
Claim 6
Dependent Claim
15 words
A depolarizer as set forth in claim 2 wherein said organic component is polyvinylbutylpyridinium iodide.
Claim 7
Dependent Claim
15 words
A depolarizer as set forth in claim 2 wherein said organic component is polyvinylethylpyridinium bromide.
Claim 8
Dependent Claim
15 words
A depolarizer as set forth in claim 2 wherein said organic component is polyvinylethylpyridinium iodide.
Claim 9
Dependent Claim
15 words
A depolarizer as set forth in claim 1 wherein said organic component is crystal violet.
Claim 10
Dependent Claim
15 words
A depolarizer as set forth in claim 1 wherein said organic component is auramine 0.
Claim 11
Dependent Claim
15 words
A depolarizer as set forth in claim 1 wherein said organic component is methyl violet.
Claim 12
Dependent Claim
15 words
A depolarizer as set forth in claim 1 wherein said organic component is brilliant green.
Claim 13
Dependent Claim
23 words
A depolarizer as set forth in claim 2 including from 10 to 18% by weight of absorbent consisting of magnesium oxide and polyvinylpyridine.
Claim 14
Dependent Claim
45 words
A depolarizer as set forth in claim 2 wherein said absorbent consists of from 5 to 8% (by weight of the depolarizer) magnesium oxide and 5 to 10% (by weight of the depolarizer) of a compound selected from the group consisting of polyvinylpyrollidine and polyvinylpyridine.
Claim 15
Dependent Claim
44 words
A depolarizer as set forth in claim 1 wherein said organic is a phenyl methane dye, said depolarizer including an absorbent consisting of from 2 to 4% (by weight of depolarizer) magnesium oxide and from about 10 to 12% (by weight of depolarizer) polyvinylpyridine.
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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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |