US4798664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion sensor
Assignee: Terumo Corp
•
Filing: 1986-12-24
•
Granted: 1989-01-17
•
Expires: 2006-12-24
Abstract
Abstract Disclosed is a solid-type ion sensor which does not have an internal liquid chamber. The ion sensor has a laminated structure basically includes an electrically conductive substrate, a redox layer having a redox function covering the surface of the electrically conductive substrate, and an ion-selective layer covering the surface of the redox layer. Also provided is an ion sensor of this type having an insulated thermister imbedded so as to contact the redox layer.
Inventors
- 👤 Shuichiro Yamaguchi
- 👤 Norihiko Ushizawa
- 👤 Takeshi Shimomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
82 words
An ion sensor comprising: an electrically conductive substrate; an electrically polymerized redox layer having a redox function covering a surface of said electrically conductive substrate; and an ion-selective layer exhibiting ion selectivity covering a surface of said redox layer wherein said ion selective layer contains the following ingredients (a) - (d): ______________________________________
(a) a polyvinyl chloride
100 parts by weight
(b) ion carrier material
6-30 parts by weight
(c) electrolytic salt
0-3.6 parts by weight
(d) plasticizers 40-665 parts by weight.
______________________________________
Claim 2
Dependent Claim
82 words
An ion sensor comprising: an electrically conductive substrate; an electrically polymerized redox layer having a redox function covering a surface of said electrically conductive substrate; and an ion-selective layer exhibiting ion selectivity covering a surface of said redox layer wherein said ion selective layer contains the following ingredients (a) - (d): ______________________________________
(a) a polyvinyl chloride
100 parts by weight
(b) ion carrier material
6-30 parts by weight
(c) electrolytic salt
0-3.6 parts by weight
(d) plasticizers 40-665 parts by weight.
______________________________________
Claim 3
Dependent Claim
40 words
The ion sensor according to claim 1, wherein said electrically conductive substrate is selected from a group consisting of an electrically conductive carbon material, a metal, and a composite obtained by coating the surface of said metal with a semiconductor.
Claim 4
Dependent Claim
40 words
An ion sensor according to claim 2, wherein said metal comprises gold, platinum, copper, silver, palladium, nickel or iron, said conductive carbon material comprises basal plane pyrolytic graphite or glassy carbon and said semiconductor comprises indium oxide or tin oxide.
Claim 5
Dependent Claim
25 words
The ion sensor according to claim 1, wherein said redox layer is selected from the group of materials which undergo a quinone-hydroquinone type redox reaction.
Claim 6
Dependent Claim
25 words
The ion sensor according to claim 1, wherein said redox layer is selected from the group of materials which undergo an amine-quinoid type redox reaction.
Claim 7
Dependent Claim
27 words
The ion sensor according to claim 1, wherein said redox layer is selected from the group of electrically conductive materials consisting of poly (pyrrole) and poly (thionylene).
Claim 8
Dependent Claim
21 words
The ion sensor according to claim 1, wherein said redox layer has a thickness of from 0.01 μm to 1.0 mm.
Claim 9
Dependent Claim
21 words
The ion sensor according to claim 1, wherein said ion-sensitive layer has a thickness of from 1 μm to 10 mm.
Claim 10
Dependent Claim
64 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is a compound expressed by the formula ##STR12## where R 1 , R 2 , R 3 represent the same or different alkyl groups, among which at least two alkyl groups have a carbon number of 8-18, and is selective to hydrogen ion.
Claim 11
Dependent Claim
24 words
The ion sensor according to claim 1, wherein said ion selective layer has an electrode resistance of no more than 50MΩ at 10° C.
Claim 12
Dependent Claim
49 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises an organic polymeric membrane containing an ion carrier material, which is a compound expressed by the formula ##STR13## where R 4 represents an alkyl group having a carbon number of 8-18, and is selective to hydrogen ion.
Claim 13
Dependent Claim
42 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of crown ether compounds including valinonycin, nonactin and monactin, and is selective to potassium ion.
Claim 14
Dependent Claim
15 words
An ion sensor according to claim 12 wherein said crown ether compounds comprise dicyclohexyl-18-crown-6,naphtho-15-crown-5,bis (15-crown-5).
Claim 15
Dependent Claim
45 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of aromatic amides or diamides, aliphatic amides or diamides, and crown compounds, and is selective to sodium ion.
Claim 16
Dependent Claim
80 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of the quaternary ammonium salts expressed by the formula ##STR14## where R 7 , R 8 , R 9 represent the same or different alkyl groups which have a carbon number of 8-10, and R 10 represents hydrogen or an alkyl group having a carbon number of 1-8, and is selective to chlorine ion.
Claim 17
Dependent Claim
33 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is expressed by the formula ##STR15## and is selective to chlorine ion.
Claim 18
Dependent Claim
45 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of calcium bis(di-(n-octylphenyl) phosphate , (-)-(R,R)-N,N'-bis((11-ethoxy carbonyl) undecyl)-N,N',4,5-tetramethyl-3,6-dioxaoctane-diamide and calcium bis(di(n-decyl) phosphate), and is selective to calcium ion.
Claim 19
Dependent Claim
91 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of quaternary ammonium salts expressed by the formula ##STR16## where R 11 , R 12 , R 13 represent the same or different alkyl groups having a carbon number of 8-18, R 14 represents hydrogen atom or an alkyl group having a carbon number of 1-4, and X - represents Cl - , Br - or OH - , and is selective to hydrogencarbonate ion.
Claim 20
Dependent Claim
41 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of tertiary amine compounds expressed by the formulae ##STR17## and is selective to hydrogencarbonate ion.
Claim 21
Dependent Claim
39 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of nonacting consisting of monactin and tetranactine, and is selective to ammonium ion.
Claim 22
Dependent Claim
25 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises an organic polymeric membrane containing an ion carrier material selective to magnesium ion.
Claim 23
Dependent Claim
16 words
An ion sensor according to claim 21, wherein the ion carrier material is N, N'-diheptyl-N,N'-dimethyl-1,4-butane diamine.
Claim 24
Dependent Claim
30 words
The ion sensor according to claim 1, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is a tertiary amine compound selective to hydrogencarbonate ion.
Claim 25
Dependent Claim
71 words
An ion sensor comprising: an electrically conductive substrate having a tip; a redox layer having a redox function covering a surface of said electrically conductive substrate; and a thermister coated with an insulating membrane and imbedded adjacent the tip of said electrically conductive substrate so as to contact said redox layer; and an ion-selective layer covering a surface of said redox layer and of said insulating membrane which covers said thermister.
Claim 26
Dependent Claim
71 words
An ion sensor comprising: an electrically conductive substrate having a tip; a redox layer having a redox function covering a surface of said electrically conductive substrate; and a thermister coated with an insulating membrane and imbedded adjacent the tip of said electrically conductive substrate so as to contact said redox layer; and an ion-selective layer covering a surface of said redox layer and of said insulating membrane which covers said thermister.
Claim 27
Dependent Claim
41 words
The ion sensor according to claim 24, wherein said electrically conductive substrate is selected from a group which consists of an electrically conductive carbon material, a metal, and a composite obtained by coating the surface of said metal with a semiconductor.
Claim 28
Dependent Claim
40 words
An ion sensor according to claim 25, wherein said metal comprises gold, platinum, copper, silver, palladium, nickel or iron, said conductive carbon material comprises basal plane pyrolytic graphite or glassy carbon and said semiconductor comprises indium oxide or tin oxide.
Claim 29
Dependent Claim
25 words
The ion sensor according to claim 24, wherein said redox layer is selected from the group of materials which undergo a quinone-hydroquinone type redox reaction.
Claim 30
Dependent Claim
25 words
The ion sensor according to claim 24, wherein said redox layer is selected from the group of materials which undergo an amine-quinoid type redox reaction.
Claim 31
Dependent Claim
27 words
The ion sensor according to claim 24, wherein said redox layer is selected from the group of electrically conductive materials consisting of poly (pyrrole) and poly (thionylene).
Claim 32
Dependent Claim
21 words
The ion sensor according to claim 24, wherein said redox layer has a thickness of from 0.01 μm to 1.0 mm.
Claim 33
Dependent Claim
21 words
The ion sensor according to claim 24, wherein said ion-sensitive layer has a thickness of from 1 μm to 10 mm.
Claim 34
Dependent Claim
64 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is a compound expressed by the formula ##STR18## where R 1 , R 2 , R 3 represent the same or different alkyl groups, among which at least two alkyl groups have a carbon number of 8-18, and is selective to hydrogen ion.
Claim 35
Dependent Claim
25 words
The ion sensor according to claim 24, wherein said ion selective layer has an electrode resistance of no more than 50 MΩ at 10° C.
Claim 36
Dependent Claim
48 words
The ion sensor according to claim 24, wherein said ion selective layer contains the following ingredients (A) ______________________________________
(D):
(A) polyvinyl chloride:
100 parts by weight
(B) ion carrier material:
6-30 parts by weight
(C) electrolytic salt
0-3.6 parts by weight
(D) plasticizer 40-665 parts by weight
______________________________________
Claim 37
Dependent Claim
48 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is a compound expressed by the formula ##STR19## where R 4 represents an alkyl group having a carbon number of 8-18, and is selective to hydrogen ion.
Claim 38
Dependent Claim
42 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of crown ether compounds including valinomycin, nonactin and monactin, and is selective to potassium ion.
Claim 39
Dependent Claim
15 words
An ion sensor according to claim 36 wherein said crown ether compounds comprise dicyclohexyl-18-crown-6,naphtho-15-crown-5,bis (15-crown-5).
Claim 40
Dependent Claim
45 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of aromatic amides or diamides, aliphatic amides or diamides, and crown compounds, and is selective to sodium ion.
Claim 41
Dependent Claim
80 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of the quaternary ammonium salts expressed by the formula ##STR20## where R 7 , R 8 , R 9 represent the same or different alkyl groups which have a carbon number of 8-10, and R 10 represents hydrogen or an alkyl group having a carbon number of 1-8, and is selective to chlorine ion.
Claim 42
Dependent Claim
33 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is expressed by the formula ##STR21## and is selective to chlorine ion.
Claim 43
Dependent Claim
44 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group consisting of calcium bis(di-(n-octylphenyl) phosphate), (-)-(R,R)-N,N'-bis(11-ethoxy carbonyl) undecyl)-N,N',4,5-tetramethyl-3,6-dioxaoctane-diamide and calcium bis(di(n-decyl) phosphate), and is selective to calcium ion.
Claim 44
Dependent Claim
92 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of quaternary ammonium salts expressed by the formula ##STR22## where R 11 , R 12 , R 13 represent the same or different alkyl groups having a carbon number of 8-18, R 14 represents hydrogen atom or an alkyl group having a carbon number of 1-4 , and X - represents Cl - , Br - or OH - , and is selective to hydrogencarbonate ion.
Claim 45
Dependent Claim
41 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of tertiary amine compounds expressed by the formulae ##STR23## and is selective to hydrogencarbonate ion.
Claim 46
Dependent Claim
39 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is selected from the group of nonactins consisting of monactin and tetranactine, and is selective to ammonium ion.
Claim 47
Dependent Claim
24 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material selective to magnesium ion.
Claim 48
Dependent Claim
30 words
The ion sensor according to claim 24, wherein said ion-sensitive layer comprises a polymeric membrane containing an ion carrier material, which is a tertiary amine compound selective to hydrogencarbonate ion.
Claim 49
Dependent Claim
43 words
An ion sensor comprising: an electrically conductive substrate; a redox layer electrolytically polymerized at about -20° C. having a redox function covering a surface of said electrically conductive substrate; and an ion-selective layer exhibiting ion selectivity covering a surface of said redox layer.
Claim 50
Dependent Claim
43 words
An ion sensor comprising: an electrically conductive substrate; a redox layer electrolytically polymerized at about -20° C. having a redox function covering a surface of said electrically conductive substrate; and an ion-selective layer exhibiting ion selectivity covering a surface of said redox layer.
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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) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |