Patent US3039466A successfully refreshed from Google Patents.
US2645563A
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Method of determining the end point of a titration
Assignee: Texas A&M Research Foundation
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Filing: 1946-12-06
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Granted: 1953-07-14
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Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:23
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/16; G01N31/162; G01N31/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF DETERMINING THE END-POINT OF A TITRATION WHEN A SOLUTION IS TITRATED AGAINST A REAGENT WHEREIN ONE OF SAID SOLUTION AND SAID REAGENT IS OF KNOWN CONCENTRATION WHILE THE OTHER IS OF UNKNOWN CONCENTRATION COMPRISING THE STEPS OF, SUBJECTING TO A HIGH FREQUENCY ELECTROMAGNETIC FIELD A MEASURED QUALTITY OF THE SOLUTION, ADDING TO SUCH SOLUTION THE REAGENT WHILE SUCH SOLUTION AND THE ADDED REAGENT ARE MAINTAINED WITHIN SAID FIELD, AND CONTINUOUSLY AND INSTRUMENTALLY MEASURING WITH AN ELECTRICAL INSTRUMENT THE ENERGY INPUT TO THE RESULTING SOLUTION DURING SUCH ADDING STEP TO DETERMINE A POINT AT WHICH AN ABRUPT REVERSAL OF THE AMOUNT OF CURRENT FLOWING IN THE MEASURING INSTRUMENT IS OBTAINED AS AN INDICATION THAT AN END-POINT
Claim 2
Independent Claim
118 words
THE METHOD OF DETERMINING THE END-POINT OF A TITRATION WHEN A SOLUTION IS TITRATED AGAINST A REAGENT WHEREIN ONE OF SAID SOLUTION AND SAID REAGENT IS OF KNOWN CONCENTRATION WHILE THE OTHER IS OF UNKNOWN CONCENTRATION COMPRISING THE STEPS OF, SUBJECTING TO A HIGH FREQUENCY ELECTROMAGNETIC FIELD A MEASURED QUALTITY OF THE SOLUTION, ADDING TO SUCH SOLUTION THE REAGENT WHILE SUCH SOLUTION AND THE ADDED REAGENT ARE MAINTAINED WITHIN SAID FIELD, AND CONTINUOUSLY AND INSTRUMENTALLY MEASURING WITH AN ELECTRICAL INSTRUMENT THE ENERGY INPUT TO THE RESULTING SOLUTION DURING SUCH ADDING STEP TO DETERMINE A POINT AT WHICH AN ABRUPT REVERSAL OF THE AMOUNT OF CURRENT FLOWING IN THE MEASURING INSTRUMENT IS OBTAINED AS AN INDICATION THAT AN END-POINT
References Cited (Backward Citations)
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US1898432A
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US1976904A
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US2047985A
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US2395425A
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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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |