中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.009 seconds)

    Measuring system
    4.
    发明授权
    Measuring system 失效
    测量系统

    公开(公告)号：US3707455A

    公开(公告)日：1972-12-26

    申请号：US3707455D

    申请日：1968-07-15

    Applicant: IBM

    Inventor： DERR DONALD B ,  NEFF GORDON W ,  SAMBUCETTI CARLOS J

    IPC: G01N27/36 ,  G01N27/416 ,  G01N27/26 ,  G01N27/40

    CPC classification number: G01N27/36

    Abstract: A DIFFERENTIAL ION SENSITIVE MEASURING SYSTEM IS PROVIDED TO MEASURE THE CONCENTRATION OF PARTICULAR CONSTITUENTS OF A FLUID. A PAIR OF IDENTICAL ION SENSITIVE ELECTRODES OR PROBES ARE USED TO PROVIDE THE DIFFERENTIAL MEASUREMENT. ONE OF THE ELECTRODES IN SURROUNDED WITH A REGENT SELECTED TO REACT WITH THE MOLECULES OF THE FLUID CONSTITUENT UNDER TEST. UPON CONTACT WITH THE FLUID TO BE ANALYZED EACH ELECTRODE RESPONDS IN THE SAME MANNER TO IONS IN THE FLUID SO AS TO YIELD A ZERO VOLTAGE DIFFERENCE FROM THE EFFECTS THEREOF. HOWEVER, AT THE ELECTRODE SURROUNDED WITH THE REAGENT THE LATTER REACTS WITH MOLECULES OF THE CONSTITUENTS UNDER TEST TO PRODUCE AN ION CHANGE THEREAT NOT SEEN BY THE OTHER ELECTRODE. THE MAGNITUDE OF THE ION CHANGE IS INDICATIVE OF THE CONCENTRATION OF THE CONSTITUENT UNDER TEST.

    Automatic fluid sample apparatus
    7.
    发明授权
    Automatic fluid sample apparatus 失效
    自动流体样品装置

    公开(公告)号：US3607092A

    公开(公告)日：1971-09-21

    申请号：US3607092D

    申请日：1970-03-23

    Applicant: IBM

    Inventor： NEFF GORDON W ,  TOMKO JOHN E

    IPC: G01N1/38 ,  G01N33/16

    CPC classification number: G01N1/38 ,  Y10T137/86083

    Abstract: An automatic fluid sample apparatus for the chemical analysis of fluids is described. In the apparatus, a plurality of samples are substantially simultaneously precisely measured out and diluted or mixed with the proper quantity of diluent and/or reagent. A series of tubing valves, preferably of the T-type, in one position permit sample containers having the desired sample volume to be filled with samples of fluid to be analyzed from a fluid source through the action of a vacuum pump. The valves are then placed in a second position whereby the samples flow from the sample containers to recipient containers and respective proper quantities of diluent or reagent are caused to flow through the valves and the sample containers into the recipient containers.

    Glucose measuring system
    8.
    发明授权
    Glucose measuring system 失效
    葡萄糖测量系统

    公开(公告)号：US3591480A

    公开(公告)日：1971-07-06

    申请号：US3591480D

    申请日：1968-07-15

    Applicant: IBM

    Inventor： NEFF GORDON W ,  SAMBUCETTI CARLOS J ,  IOMKO JOHN E

    IPC: G01N33/66 ,  C12M1/34 ,  C12Q1/00 ,  G01N27/327 ,  G01N27/42 ,  G01N27/49 ,  G01N33/487 ,  G01N27/32 ,  G01N27/40

    CPC classification number: C12Q1/006 ,  G01N27/3271 ,  Y10T436/144444 ,  Y10T436/255

    Abstract: THEN A PLATINUM AND CALOMEL ELECTRODE, COUPLED VIA AN ELECTROLYTE SOLUTION, ACT TO CAUSE GALVANIC COULOMETRIC REDUCTION OF THE IODINE TO REGENERATE IODIDE. AT STEADY STATE THE ONLY CURRENT-REGULATING MECHANISM IS THE DIFFUSION OF GLUCOSE ACROSS THE MEMBRANE, WHICH IS A LINEAR FUNCTION OF CONCENTRATION.

    A MEASURING SYSTEM IS PROVIDED WHICH DIRECTLY MEASURES THE CONCENTRATION OF GLUCOSE IN BIOLOGICAL FLUIDS. GLUCOSE FROM A BIOLOGICAL FLUID IS DIFFUSED THROUGH A SEMIPERMEABLE MEMBRANE INTO A REACTION CHAMBER AND IS CATALYZED BY THE ENZYME GLUCOSE OXIDASE WHEREUPON GLUCONIC ACID AND HYDROGEN PEROXIDE ARE FORMED. IODIDE IONS IN THE REACTION CHAMBER THEN EFFECT THE DECOMPOSITION OF THE HYDROGEN PEROXIDE TO FORM IODINE AND WATER.

Patent Agency Ranking