Electrochemical electrode liquid junction structure and method for producing same
Abstract
Abstract AN ELECTROCHEMICAL ELECTRODE FOR USE IN MAKING ION POTENTIAL MEASUREMENTS OF SOLUTIONS. THE ELECTRODE EMBODIES A LIQUID JUNCTION STRUTURE WHICH IS FORMED BY COATING THE OUTER SURFACE OF A FIRST GLASS TUBE WITH A MATERIAL CONTAINING EITHER A CERAMIC OR AN ADMIXTURE OF PARTICLES OF GLASS AND INERT PARTICLES. THE COATED TUBE IS MOUNTED WITHIN AN OPENING IN A SECOND GLASS TUBE AND HEAT IS APPLIED TO THE TWO TUBES IN THE REGION OF THE COATING UNTIL THE COATING PARTIALLY FUSES AND ADHERES BY FUSION TO THE FIRST TUBE AND THE SECOND TUBE IS FUSED TO THE COATING. THE PARTIALLY FUSED COATING PROVIDES AN ANNULAR POROUS LIQUID JUNCTION STRUCTURE THROUGH WHICH SALT BRIDGE SOLUTION MAY FLOW TO CONTACT A SAMPL.
Inventors
- 👤 M Deushane
- 👤 D Rohrer
Bibliographic Details
Claims Analysis
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |