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.

公开(公告)号：US3244139A

公开(公告)日：1966-04-05

申请号：US31216463

申请日：1963-09-27

Applicant: IBM

Inventor： BROWN ROBERT J ,  DERR DONALD B ,  GUT FREDERICK C

IPC: B21C51/00 ,  B41K3/12

CPC classification number: B41K3/12 ,  B21C51/005

公开(公告)号：US3141403A

公开(公告)日：1964-07-21

申请号：US28346263

申请日：1963-05-27

Applicant: IBM

Inventor： BROWN ROBERT J ,  DERR DONALD B ,  GUT FREDERICK C

IPC: B41J7/48 ,  B41K3/10

CPC classification number: B41J7/48 ,  B41K3/102

公开(公告)号：CA698785A

公开(公告)日：1964-11-24

申请号：CA698785D

Applicant: IBM

Inventor： GUT FREDERICK C ,  BROWN ROBERT J ,  DERR DONALD B

公开(公告)号：CA868011A

公开(公告)日：1971-04-06

申请号：CA868011D

Applicant: IBM

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