The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 1981
Filed:
May. 22, 1980
Applicant:
Inventors:
Motohiko Hikuma, Yokohama, JP;
Tatsuru Kubo, Yokohama, JP;
Takeo Yasuda, Yokohama, JP;
Isao Karube, Tachikawa, JP;
Shuichi Suzuki, Tokyo, JP;
Assignee:
Ajinomoto Company, Incorporated, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ; G01N / ;
U.S. Cl.
CPC ...
204 / ; 2323 / ; 2041 / ; 2041 / ; 422 68 ; 435 29 ; 435 37 ; 435182 ; 435288 ; 435817 ;
Abstract
The concentration of ammonia in an aqueous liquid is determined by contacting a sample of the liquid with dissolved oxygen and with a microbial electrode comprising an oxygen-sensitive electrode, a porous membrane, and nitrifying bacteria confined or immobilised by the membrane which are in direct or close contact with the diaphragm of the electrode. The rate of oxygen consumption under otherwise uniform conditions is as precise a measure of concentration of ammonia as a conventional colorimetric method and distillation-titration method.