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:
Nov. 14, 2000
Filed:
Feb. 06, 1998
Kiyoko Takamura, Yokohama, JP;
Fumiyo Kusu, Hachiouji, JP;
Takeshi Nishida, Ogohri, JP;
Hideaki Hashimoto, Miyaki-gun, JP;
Hidefumi Yabu, Ohnojou, JP;
Kazuyoshi Mori, Kasuga, JP;
Yuji Hiraishi, Chikushino, JP;
Yasuyuki Hanada, Kasuga, JP;
Tetsuji Soeda, Kumamoto, JP;
Tsuyoshi Kusakabe, Chikushi-gun, JP;
Tetsuya Nishio, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An acidity measuring apparatus includes a measuring container for accommodating an electrolyte solution including one of a 1,2-benzoquinone derivative and a 1,4-benzoquinone derivative, an organic solvent, an electrolyte and an acid-containing subject for measurement; a working electrode, a counter electrode and a reference electrode section provided in the measuring container and immersed in the electrolyte solution; and a control section for sweeping a potential of the working electrode within a prescribed range and for detecting a value of a pre-peak current generated by the acid and flowing between the working electrode and the counter electrode.