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:
Nov. 17, 2015
Filed:
Oct. 23, 2009
Noriaki Harada, Ibaraki, JP;
Atsushi Hiro, Ibaraki, JP;
Katsumi Ishii, Ibaraki, JP;
Yoshihide Kawaguchi, Ibaraki, JP;
Atsuko Mizuike, Ibaraki, JP;
Osamu Hayashi, Ibaraki, JP;
Noriaki Harada, Ibaraki, JP;
Atsushi Hiro, Ibaraki, JP;
Katsumi Ishii, Ibaraki, JP;
Yoshihide Kawaguchi, Ibaraki, JP;
Atsuko Mizuike, Ibaraki, JP;
Osamu Hayashi, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
Disclosed is a method for easily producing a long porous thermosetting resin sheet which has no resin coating film on the surface. Also disclosed are a porous thermosetting resin sheet produced by the method, and a composite semipermeable membrane having excellent chemical resistance and practical water permeability and salt-blocking property. The porous thermosetting resin sheet can be produced by forming a cylindrical or columnar resin block which is composed of a cured product of a thermosetting resin composition containing a thermosetting resin, a curing agent and a porogen; then forming a long thermosetting resin sheet by cutting the surface of the resin block at a certain thickness; and then removing the porogen from the thermosetting resin sheet.