US3853731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state junction glass electrode and method of making said electrode
Assignee: OI Glass Inc
•
Filing: 1973-03-12
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Granted: 1974-12-10
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Expires: 1993-03-12
Abstract
Abstract An ion selective glass electrode having a solid state junction which does not require an internal filling solution is fabricated by applying a film of a mixture of silver oxide and a silver salt of a hologen oxy acid to the inside surface of a glass electrode and firing at an elevated temperature. The mixture is thereby converted to a composite of silver and silver halide and fused to the ion selective glass surface. Attachment of a wire to the surface of the resulting composite establishes electrical contact with the inside of the electrode.
Inventors
- 👤 D Gray
- 👤 C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:49
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
102 words
A GLASS ELECTRODE HAVING A SOLID-STATE JUNCTION WHICH COMPRISES AN ELECTRODE BODY, A MEMBRANE OF ION-SELECTIVE GLASS CLOSING ONE END OF SAID BODY, A SILVER-SILVER HALIDE COMPOSITE DIRECTLY FUSED TO THE INSIDE SURFACE OF SAID MEMBRANE, THE COMPOSITE BEING A REACTION PRODUCT OF A MIXTURE OF: A. AT LEAST ABOUT 0.1 PERCENT BY WEIGHT OF THE MIXTURE OF SILVER OXIDE; AND B. AT LEAST ABOUT 0.1 PERCENT BY WEIGHT OF THE MIXTURE OF A SILVER SALT OF A HALOGEN OXY ACID, THE MIXTURE BEING HEATED TO A TEMPERATURE OF ABOUT 400*-650*C., AND MEANS FOR CONNECTING SAID COMPOSITE TO AN EXTERNAL ELECTRICAL CIRCUIT.
Claim 2
Dependent Claim
102 words
A GLASS ELECTRODE HAVING A SOLID-STATE JUNCTION WHICH COMPRISES AN ELECTRODE BODY, A MEMBRANE OF ION-SELECTIVE GLASS CLOSING ONE END OF SAID BODY, A SILVER-SILVER HALIDE COMPOSITE DIRECTLY FUSED TO THE INSIDE SURFACE OF SAID MEMBRANE, THE COMPOSITE BEING A REACTION PRODUCT OF A MIXTURE OF: A. AT LEAST ABOUT 0.1 PERCENT BY WEIGHT OF THE MIXTURE OF SILVER OXIDE; AND B. AT LEAST ABOUT 0.1 PERCENT BY WEIGHT OF THE MIXTURE OF A SILVER SALT OF A HALOGEN OXY ACID, THE MIXTURE BEING HEATED TO A TEMPERATURE OF ABOUT 400*-650*C., AND MEANS FOR CONNECTING SAID COMPOSITE TO AN EXTERNAL ELECTRICAL CIRCUIT.
Claim 3
Dependent Claim
14 words
An electrode according to claim 1 wherein said composite is a silver-silver chloride composite.
Claim 4
Dependent Claim
14 words
An electrode according to claim 1 wherein said composite is a silver-silver bromide composite.
Claim 5
Dependent Claim
14 words
An electrode according to claim 1 wherein said composite is a silver-silver iodide composite.
Claim 6
Dependent Claim
23 words
An electrode according to claim 1 wherein the composite contains about 10-50 percent by the weight of the mixture of a glass binder.
Claim 7
Dependent Claim
13 words
An electrode according to claim 1 wherein said means is a metal conductor.
Claim 8
Dependent Claim
19 words
An electrode according to claim 1 wherein said means is attached to said composite by an electrically conductive adhesive.
Claim 9
Dependent Claim
23 words
An electrode according to claim 1 wherein said means is a copper wire that is attached to said composite by silver epoxy cement.
Claim 10
Dependent Claim
22 words
An electrode according to claim 1 in which the composite contains a glass having the following formulation in approximate weight by percent:
Claim 11
Dependent Claim
88 words
A process for producing a glass electrode having a solid state junction which comprises applying to the inside surface of an ion selective glass membrane closing one end of an electrode body a paste comprising a mixture of silver oxide and a silver salt of a halogen oxy acid in an inert vehicle therefor, firing at a temperature and for a period sufficient to convert the paste to a silver-silver halide composite and to fuse said composite to said membrane and attaching electrical connection means to said composite.
Claim 12
Dependent Claim
88 words
A process for producing a glass electrode having a solid state junction which comprises applying to the inside surface of an ion selective glass membrane closing one end of an electrode body a paste comprising a mixture of silver oxide and a silver salt of a halogen oxy acid in an inert vehicle therefor, firing at a temperature and for a period sufficient to convert the paste to a silver-silver halide composite and to fuse said composite to said membrane and attaching electrical connection means to said composite.
Claim 13
Dependent Claim
12 words
A process according to claim 10 wherein said salt is silver chlorate.
Claim 14
Dependent Claim
12 words
A process according to claim 10 wherein said salt is silver perchlorate.
Claim 15
Dependent Claim
12 words
A process according to claim 10 wherein said salt is silver bromate.
Claim 16
Dependent Claim
12 words
A process according to claim 10 wherein said salt is silver iodate.
Claim 17
Dependent Claim
16 words
A process according to claim 10 wherein said vehicle comprises a solution of an acrylic resin.
Claim 18
Dependent Claim
12 words
A process according to claim 10 wherein said paste contains powdered glass.
Claim 19
Dependent Claim
30 words
A process according to claim 10 wherein firing is accomplished at a temperature of about 400*C. to 650*C. for a period of time of about 1/4 hour to 1 hour.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |