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:
Jan. 30, 2018
Filed:
Nov. 04, 2011
Yoshihiro Kitamura, Ibaraki, JP;
Ikuya Kuzuhara, Ibaraki, JP;
Hiroshi Matsuo, Ibaraki, JP;
Hirotoshi Ishizuka, Ibaraki, JP;
Ken Nishiura, Ibaraki, JP;
Yuu Takashima, Ibaraki, JP;
Atsuhito Koumoto, Ibaraki, JP;
Yoshihiro Kitamura, Ibaraki, JP;
Ikuya Kuzuhara, Ibaraki, JP;
Hiroshi Matsuo, Ibaraki, JP;
Hirotoshi Ishizuka, Ibaraki, JP;
Ken Nishiura, Ibaraki, JP;
Yuu Takashima, Ibaraki, JP;
Atsuhito Koumoto, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
Provided is a method for manufacturing a sheet-shaped separation membrane that allows a sheet-shaped separation membrane having uniform separating ability to be manufactured at a high speed, the method comprising manufacturing a sheet-shaped separation membrane by forming a microporous layer on a porous substrate, wherein the method is characterized in having: a membrane-forming solution application step of coating a porous substrate with a membrane-forming solution in which a polymer is dissolved in a solvent, a congealing liquid application step of applying a congealing liquid by a liquid membrane drop method to the porous substrate coated with the membrane-forming solution, and a solvent removal step of removing the solvent from the congealed microporous layer.