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:
Sep. 12, 2006
Filed:
Apr. 16, 2004
Daisaku Yano, Tokyo, JP;
Toshiharu Wake, Tokyo, JP;
Kiyotaka Yamamura, Tokyo, JP;
Hiro Yoshikawa, Tokyo, JP;
Daisaku Yano, Tokyo, JP;
Toshiharu Wake, Tokyo, JP;
Kiyotaka Yamamura, Tokyo, JP;
Hiro Yoshikawa, Tokyo, JP;
Organo Corporation, Tokyo, JP;
Abstract
A water-soluble lithium salt is added as a tracer substance along with a water treatment chemical to water to be treated. The concentration of lithium ions is electrochemically or optically measured using a lithium ion sensitive substance, so as to perform concentration control of the water treatment chemical added to water to be treated. An ion selective electrode, ion selective field effect transistor, or ion optode may be employed to perform the electrochemical or optical measurement using a lithium ion sensitive substance.