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:
Jul. 11, 2023
Filed:
Apr. 06, 2018
Panasonic Corporation, Kadoma, JP;
Whirlpool Corporation, Benton Harbor, MI (US);
Yoshihiro Sakamoto, Kyoto, JP;
Fumitaka Ogasawara, Hyogo, JP;
PANASONIC HOLDINGS CORPORATION, Osaka, JP;
Abstract
A dielectric constant estimation device which can estimate a dielectric constant of an object with high accuracy in a non-contact state even when a shape of the object is indefinite, and a microwave heating device equipped with the dielectric constant estimation device. The dielectric constant estimation device includes a transmitting antenna and a receiving antenna which can switch a polarized wave of an electromagnetic wave between a TE wave and a TM wave. Based on a reflected wave of the TE wave and a reflected wave of the TM wave from the object, the dielectric constant estimation device calculates a TM/TE reflection ratio, and compares the calculated TM/TE reflection ratio and dielectric constant data of theoretical values stored in a memory part in advance in the form of database with each other so that a dielectric constant of the object is estimated.