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US4739018A
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Polycarbon sulphide polymers
Assignee: NATIONALE ELF AQUITAINE TOUR AQUITAINE 92400 COURBEVOIE FRANCE Ste
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Filing: 1984-09-18
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Granted: 1988-04-19
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Expires: 2004-09-18
Abstract
Abstract Polycarbon sulphide derivatives comprise units (R x CS m ) n in which R represents hydrogen, an alkali metal or a transition metal, x is the degree to which R is present in the carbon-sulphur structure, m is the degree of substitution with sulphur and n is the number of units in the polymer chain. As shown by the single figure of the drawing, the insertion of R is reversible.
Inventors
- 👤 Michel Armand
- 👤 Mireille Fouletier
- 👤 Pierre Degott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; C; C08; C08F; C08F8/00; C08F8/34; H01M10/056; H01M10/0564; H01M10/0565; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A polycarbon sulphide compound consisting essentially of units of the formula (R.sub.x CS.sub.m).sub.n (I) of the basic structure ##STR3## wherein: R represents a metal selected from the group consisting of lithium, sodium, potassium, silver, copper, zinc and cobalt; x represents the degree to which R is present in the carbon-sulphur structure and has a value from 0 to m/valency of the metal, these values being inclusive; m represents the degree of substitution with sulphur, with 0≦m≦1 and n represents the number of units in the polymeric carbon chain.
Claim 2
Dependent Claim
88 words
A polycarbon sulphide compound consisting essentially of units of the formula (R.sub.x CS.sub.m).sub.n (I) of the basic structure ##STR3## wherein: R represents a metal selected from the group consisting of lithium, sodium, potassium, silver, copper, zinc and cobalt; x represents the degree to which R is present in the carbon-sulphur structure and has a value from 0 to m/valency of the metal, these values being inclusive; m represents the degree of substitution with sulphur, with 0≦m≦1 and n represents the number of units in the polymeric carbon chain.
Claim 3
Dependent Claim
21 words
A compound according to claim 1, wherein R is a metal selected from the group consisting of lithium, sodium and potassium.
Claim 4
Dependent Claim
22 words
A compound according to claim 1, wherein R is a metal selected from the group consisting of silver, cooper, zinc and cobalt.
Claim 5
Dependent Claim
14 words
A compound according to claim 1, wherein x has a value greater than 0.5.
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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |