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:
May. 15, 2012
Filed:
Oct. 28, 2009
Applicant:
Jun Tarui, Kariya, JP;
Inventor:
Jun Tarui, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 15/06 (2006.01); G01N 33/00 (2006.01); G01N 33/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid property detecting device includes a switch portion switching an electrode to charge with a standard voltage generated by a generator, or discharge through a grounding. An operation signal output portion outputs an operation signal to the switch portion so as to switch in a predetermined switch period. A voltage of the electrode is output as a detection signal, when the standard voltage is applied to the electrode. A signal process portion calculates liquid property based on the detection signals. A gain of the signal process portion relative to the detection signal is increased, as the detection signal is decreased.