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:
Apr. 05, 2016
Filed:
Feb. 19, 2012
Mitsuhiro Oura, Tokyo, JP;
Teruo Okano, Tokyo, JP;
Tatsuya Shimizu, Tokyo, JP;
Hirotsugu Kubo, Tokyo, JP;
Sunao Takeda, Tokyo, JP;
Shinji Yamamori, Tokyo, JP;
Mitsuhiro Oura, Tokyo, JP;
Teruo Okano, Tokyo, JP;
Tatsuya Shimizu, Tokyo, JP;
Hirotsugu Kubo, Tokyo, JP;
Sunao Takeda, Tokyo, JP;
Shinji Yamamori, Tokyo, JP;
NIHON KOHDEN CORPORATION, Tokyo, JP;
TOKYO WOMEN'S MEDICAL UNIVERSITY, Tokyo, JP;
Abstract
A method of measuring a pH of a solution includes: emitting light beams of two wavelengths from one side of a measuring region of a solution into which an indicator is mixed, while pulsating the solution in the measuring region; receiving at least one of transmitted light beams and reflected light beams of the emitted light beams on the other side of the measuring region, while pulsating the solution in the measuring region; obtaining absorbances of the two wavelengths based on the received at least one of the transmitted light beams and the reflected light beams; obtaining an absorbance ratio from the obtained absorbances; and calculating a pH value of the solution based on the obtained absorbance ratio and an absorbance ratio/pH value correspondence database which is previously stored.