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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 11723279 B1

PDFFull Text
Date of Patent:
Aug. 08, 2023

Filed:

Jun. 05, 2017

Piezoelectric substrate, piezoelectric woven fabric, piezoelectric knitted fabric, piezoelectric device, force sensor, and actuator

Applicants:

Mitsui Chemicals, Inc., Tokyo, JP;

Murata Manufacturing Co., Ltd., Nagaokakyo, JP;

Inventors:

Mitsunobu Yoshida, Nagoya, JP;

Kazuhiro Tanimoto, Nagoya, JP;

Katsuki Onishi, Nagoya, JP;

Shigeo Nishikawa, Chiba, JP;

Masamichi Ando, Nagaokakyo, JP;

Assignees:

MITSUI CHEMICALS, INC., Tokyo, JP;

MURATA MANUFACTURING CO., LTD., Nagaokakyo, JP;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Shawki S Ismail

Assistant Examiner:

Monica Mata

Int. Cl.
CPC ...
H01L 41/193 (2006.01); H01L 41/08 (2006.01); H01L 41/113 (2006.01); D01F 6/62 (2006.01); H10N 30/857 (2023.01); C08G 63/08 (2006.01); C08L 67/04 (2006.01); G01L 1/16 (2006.01); H10N 30/08 (2023.01); H10N 30/20 (2023.01); H10N 30/30 (2023.01); H10N 30/60 (2023.01); H10N 30/072 (2023.01); H10N 30/084 (2023.01); H10N 30/088 (2023.01); H10N 30/098 (2023.01); H10N 30/00 (2023.01);
U.S. Cl.
CPC ...
H10N 30/857 (2023.02); C08G 63/08 (2013.01); C08L 67/04 (2013.01); D01F 6/625 (2013.01); G01L 1/16 (2013.01); H10N 30/072 (2023.02); H10N 30/08 (2023.02); H10N 30/084 (2023.02); H10N 30/088 (2023.02); H10N 30/098 (2023.02); H10N 30/1061 (2023.02); H10N 30/20 (2023.02); H10N 30/30 (2023.02); H10N 30/302 (2023.02); H10N 30/60 (2023.02);
Abstract

The present invention provides: a piezoelectric substrate which includes a first piezoelectric body having an elongated shape and helically wound in one direction, and which does not include a core material, in which the first piezoelectric body includes a helical chiral polymer (A) having an optical activity; in which the length direction of the first piezoelectric body is substantially parallel to the main direction of orientation of the helical chiral polymer (A) included in the first piezoelectric body; and in which the first piezoelectric body has a degree of orientation F, as measured by X-ray diffraction according to the following Equation (a), within the range of 0.5 or more but less than 1.0:degree of orientation=(180°−α)/180°  (a)(in which α represents the half-value width of the peak derived from the orientation).

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