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:
Feb. 11, 2014
Filed:
Mar. 15, 2010
Mitsunobu Yoshida, Icihara, JP;
Masanobu Ajioka, Chiba, JP;
Kenichi Goto, Chiba, JP;
Ichiro Fujio, Nagaokakyo, JP;
Takaharu Isaki, Chiba, JP;
Takayuki Onogi, Chiba, JP;
Yoshiro Tajitsu, Suita, JP;
Shinichi Usugi, Chiba, JP;
Takeshi Karino, Ichihara, JP;
Yoshiaki Aso, Mobara, JP;
Mitsunobu Yoshida, Icihara, JP;
Masanobu Ajioka, Chiba, JP;
Kenichi Goto, Chiba, JP;
Ichiro Fujio, Nagaokakyo, JP;
Takaharu Isaki, Chiba, JP;
Takayuki Onogi, Chiba, JP;
Yoshiro Tajitsu, Suita, JP;
Shinichi Usugi, Chiba, JP;
Takeshi Karino, Ichihara, JP;
Yoshiaki Aso, Mobara, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
A School Corporation Kansai University, Suita-Shi, Osaka, JP;
Abstract
The invention provides a piezoelectric polymer material including a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and having optical activity, the piezoelectric polymer material having a piezoelectric constant dat 25° C. of 10 pC/N or more, a degree of crystallinity obtained by X-ray diffraction of from 40% to 80%, and a haze of from 0.5 to 30.