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:
Apr. 24, 2007
Filed:
Sep. 17, 2003
Masahito Tada, Fukushima, JP;
Takumi Katsurao, Fukushima, JP;
Tsukasa Ikeda, Fukushima, JP;
Kazuyuki Suzuki, Fukushima, JP;
Masahito Tada, Fukushima, JP;
Takumi Katsurao, Fukushima, JP;
Tsukasa Ikeda, Fukushima, JP;
Kazuyuki Suzuki, Fukushima, JP;
Kureha Chemical Industry Company, Limited, Tokyo, JP;
Abstract
The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is characterized in that the ratio of the scattered-light intensity (I) for a 15% solution of the polyvinylidene fluoride copolymer in dimethylformamide solvent to the scattered-light intensity (I) for dimethylformamide, (I/I), is 10 or lower. The polyvinylidene fluoride copolymer solution comprises the polyvinylidene fluoride copolymer and an organic solvent capable of dissolving the copolymer.