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US3623960A Expired / Lapsed US ⏱️ 0.0 years remaining

Glucose determination method

Assignee: Monsanto Research Corp
•
Filing: 1970-04-07
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Granted: 1971-11-30
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Expires: 1990-04-07
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Abstract

Abstract An electrochemical apparatus especially applicable for clinical use in determining glucose concentrations in solutions thereof comprising (1) a sample reservoir, (2) a glucose oxidase member consisting essentially of a well closed at the bottom by a dialysis membrane and containing an anode, glucose oxidase and a buffer solution, (3) a reference member consisting essentially of a well closed at the bottom by a dialysis membrane and containing an anode and buffer solution, (4) a cathode, (5) means for positioning the members and the cathode in the sample reservoir, (6) means for applying a voltage between the cathode and the anodes, and (7) means for measuring the electrical currents produced. The process for using the apparatus comprises adding a buffered glucose solution to the sample reservoir, immersing the cathode and the members into the solution, adding a quinone either to the members or to the glucose solution, applying a voltage between the cathode and the anodes and measuring the currents produced.

Inventors

  • 👤 David L Williams

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 20:59
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/005; C12Q1/006

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 11 words
A process as in claim 1 wherein the quinone is benzoquinone.
Claim 2
Dependent Claim 12 words
A process as in claim 1 wherein the dialysis membrane is cellulose.
Claim 3
Dependent Claim 13 words
A process as in claim 1 wherein the glucose solution is whole blood.

References Cited (Backward Citations)

US3380905A Cited
US3479255A Cited
US3367849A Cited
US3539455A Cited
US3542662A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-11-29 1975-05-31 1975-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-29 1979-05-31 1979-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-29 1983-05-31 1983-11-30 $7700.00 Window Closed / Lapsed

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