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:
Sep. 09, 2014
Filed:
Feb. 09, 2012
Mitsunobu Yoshida, Ichihara, JP;
Shunsuke Fujii, Ichihara, JP;
Hitoshi Onishi, Chiba, JP;
Yoshiro Tajitsu, Suita, JP;
Taizo Nishimoto, Chiba, JP;
Kazuhiro Tanimoto, Chiba, JP;
Kenichi Goto, Chiba, JP;
Mitsunobu Yoshida, Ichihara, JP;
Shunsuke Fujii, Ichihara, JP;
Hitoshi Onishi, Chiba, JP;
Yoshiro Tajitsu, Suita, JP;
Taizo Nishimoto, Chiba, JP;
Kazuhiro Tanimoto, Chiba, JP;
Kenichi Goto, Chiba, 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 comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 20% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 μm, of from 40 to 700.