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.:

US 9335287 B1

PDF
Full Text
Expired
Date of Patent:
May. 10, 2016

Filed:

Jun. 14, 2011
Applicants:

Masato Futagawa, Toyohashi, JP;

Kazuaki Sawada, Toyohashi, JP;

Inventors:

Masato Futagawa, Toyohashi, JP;

Kazuaki Sawada, Toyohashi, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/04 (2006.01); G01N 33/24 (2006.01);
U.S. Cl.
CPC ...
G01N 27/048 (2013.01); G01N 33/246 (2013.01);
Abstract

Contacting a pair of electrodes with soil, applying an alternate current input electric signal to one of the pair of electrodes, comparing a phase of an output electric signal from the other of the pair electrodes with a phase of the input electric signal; and determining the concentration of the ionic solute included in the solvent according to a difference of the phases. The difference of the phases is not dependent on the water content. An electrical conductivity is proportional to a water content and ion concentration, thereby, the water content of soil is available according to the measured electrical conductivity, while determining the ion concentration.


Find Patent Forward Citations

Futagawa, Masato. (2016). Specification device for water status of soil, and method for same (U.S. Patent No. 9335287). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9335287

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