Patent US3830718A successfully refreshed from Google Patents.
US3830718A
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Ammonia sensor
Assignee: Thermo Orion Inc
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Filing: 1973-03-22
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Granted: 1974-08-20
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Expires: 1993-03-22
Abstract
Abstract AN AMMONIA ELECTRODE HAS A STANDARD ELECTROLYTE SOLUTION COMPRISING A SATURATED AQUEOUS SOLUTION OF AN AMMONIUM SALT OF A STRONG ACID ANION (E.G., PICRATE) HAVING A PK NOT MORE THAN 3, THE SALT HAVING AN AQUEOUS SOLU- BILITY AT ROOM TEMPERATURE SUCH THAT THE AMMONIUM ION CONCENTRATION IS ABOUT 0.001 M TO 1 M.
Inventors
- 👤 M Frant
- 👤 J Riseman
- 👤 J Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:39
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |