US3740326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloride selective electrode
Assignee: DS MEDICAL PRODUCTS Co A CORP
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Filing: 1971-06-18
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Granted: 1973-06-19
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Expires: 1991-06-18
Abstract
Abstract AN ANION-SELECTIVE ELECTRODE HAS AN OPEN ENDED NONION-SELECTIVE TUBE, AN ANION-SELECTIVE NYLON DISC SEALED TO ONE OPEN END OF THE TUBE, A SILVER WIRE WITH A SILVER CHLORIDE PORTION POSITIONED WITHIN THE TUBE, A CHLORIDE SOLUTION WITHIN THE TUBE AND IN CONTACT WITH THE SILVER CHLORIDE PORTION OF THE SILVER WIRE, A CLOSURE OVER THE OPPOSITE ENDOF THE TUBE WITH AN APERTURE THEREIN, AND A PORTION OF THE SILVER WIRE EXTENDING THROUGH THE APERTURE IN THE CLOSURE TO THE EXTERIOR OF THE TUBE.
Inventors
- 👤 W Grubb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:01
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |