Patent US4388809A successfully refreshed from Google Patents.
Patent US3569847A successfully refreshed from Google Patents.
Patent US3764484A successfully refreshed from Google Patents.
US3764484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for determining concentration of an element in a sample
Assignee: Corning Glass Works
•
Filing: 1971-10-26
•
Granted: 1973-10-09
•
Expires: 1991-10-26
Abstract
Abstract DISCLOSED IS A METHOD FOR AUTOMATICALLY DETERMINING THE WEIGHT OR CONCENTRATION OF A COMPOUND OR ELEMENT IN A SOLUTION. A SENSING CHAMBER CONTAINING AT LEAST ONE ION-SENSING ELECTRODE IS PROVIDED WITH A CONTINUOUS FLOW OF CARRIER FLUID. THE SOLUTION IS MIXED WITH THE CARRIER FLUID AND THE RESULTANT MIXTURE FLOWS TO THE SENSING CHAMBER. THE ELECTRICAL OUTPUT OF THE ION SENSING ELECTRODE CONTINUOUSLY INDICATES THE CONCENTRATION OF A SPECIFIC ION IN THE LIQUID MIXTURE REACHING THE CHAMBER. AFTER THE ELECTRICAL OUTPUT OF THE ELECTRODE BEGINS TO INCREASE, THIS OUTPUT IS INTEGRATED FOR A PREDETERMINED PERIOD OF TIME WHILE THE MIXTURE FLOWS THROUGH THE SENSING CHAMBER.
Inventors
- 👤 D Platt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0656
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |