US3041252A
Expired / Lapsed
US
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Glass electrode for measuring potassium ion
Assignee: COMMONWEALTH MENTAL HEALTH RESEARCH FOUNDATION
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Filing: 1959-11-19
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Granted: 1962-06-26
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Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Eisenman George
- 👤 Donald O Rudin
- 👤 James U Casby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:15
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/18; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36; Y; Y10; Y10S; Y10S65/00; Y10S65/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A PROCESS OF SELECTIVELY MEASURING POTASSIUM ION ACTIVITY IN AN IONIC MIXTURE INCLUDING THE SODIUM AND HYDROGEN IONS COMPRISING PROVIDING AN ELECTRODE WHOSE ACTIVE PORTION IS MADE OF A COMPOSITION CONSISTING ESSENTIALLY OF POTASSIUM OXIDE, ALUMINUM OXIDE AND A NETWORK FORMING OXIDE SELECTED FROM THE CLASS CONSISTING OF SI02 AND GE02 IN WHICH THE RATIO OF THE MOLE PERCENT OF K20 TO A1203 IS AT LEAST SUNSTANTIALLY 1.5 TO 1, SUBJECTING THE MIXTURE TO SAID ELECTRODE AND TO A STANDARD REFERENCE HALF-CELL AND OPERATIVELY CONNECTING THE GLASS ELECTRODE AND REFERENCE HALF-CELL TO A HIGH IMPEDANCE ELECTROMETRIC AMPLIFER.
References Cited (Backward Citations)
US2462843A
Cited
US2829090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |