US4230604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric electrical conductance dependent upon electrical potential
Assignee: Vista Chemical Co
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Filing: 1978-10-30
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Granted: 1980-10-28
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Expires: 1998-10-30
Abstract
Abstract Polymers can be made semi-conductors by incorporating ionic metallic salts into said polymers, such that conductance levels rise more rapidly than normal as electrical potential increases. These salts are useful at levels of at least 0.007% by weight based on the total compound weight, said salts imparting a geometrically increased level of conductance as the applied electrical potential proportionally increases.
Inventors
- 👤 James A. Wingrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122; H01B1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
A method for imparting increased electrical conductance to organic resins and polymers comprising incorporating into said resins and polymers at least 0.007% by weight of an inorganic highly ionic monovalent metallic salt, 0.035% by weight of an inorganic highly ionic bivalent metallic salt or .07% by weight of an inorganic highly ionic trivalent metallic salt, said salt imparting a geometrically increased rate of conductance as the applied electrical potential proportionately increases.
Claim 2
Independent Claim
71 words
A method for imparting increased electrical conductance to organic resins and polymers comprising incorporating into said resins and polymers at least 0.007% by weight of an inorganic highly ionic monovalent metallic salt, 0.035% by weight of an inorganic highly ionic bivalent metallic salt or .07% by weight of an inorganic highly ionic trivalent metallic salt, said salt imparting a geometrically increased rate of conductance as the applied electrical potential proportionately increases.
Claim 3
Independent Claim
66 words
A method for forming a polyvinyl chloride semi-conductor by incorporating into the polyvinyl chloride at least 0.007% by weight of an inorganic highly ionic monovalent metallic salt, 0.035% by weight of an inorganic highly ionic bivalent metallic salt, or 0.07% by weight of an inorganic highly ionic trivalent metallic salt, said salt imparting a geometrically increased rate of conductance as the applied electrical potential proportionately increases.
Claim 4
Independent Claim
66 words
A method for forming a polyvinyl chloride semi-conductor by incorporating into the polyvinyl chloride at least 0.007% by weight of an inorganic highly ionic monovalent metallic salt, 0.035% by weight of an inorganic highly ionic bivalent metallic salt, or 0.07% by weight of an inorganic highly ionic trivalent metallic salt, said salt imparting a geometrically increased rate of conductance as the applied electrical potential proportionately increases.
Claim 5
Dependent Claim
20 words
A method as described in claim 1 wherein the inorganic highly ionic metallic salt is a sulfate or halide salt.
Claim 6
Dependent Claim
24 words
A method as described in claim 3 wherein the resin or polymer is selected from the group consisting of polyvinyl chloride homopolymers and copolymers.
Claim 7
Dependent Claim
28 words
A method as described in claim 4 wherein the salt is selected from the group consisting of sodium chloride, zinc chloride, ferric sulfate, zinc sulfate and sodium sulfate.
Claim 8
Dependent Claim
25 words
A method as described in claim 5 wherein the salt concentration in the polymer is from about .007% by weight to about 5% by weight.
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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |