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:
May. 02, 2006
Filed:
Feb. 07, 2002
Applicants:
Naoto Miyake, Kamakura, JP;
Takuya Hasegawa, Yokohama, JP;
Inventors:
Naoto Miyake, Kamakura, JP;
Takuya Hasegawa, Yokohama, JP;
Assignee:
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A reactive liquid is coated on an ion exchange resin precursor membrane for the hydrolysis treatment. Preferably, a reactive liquid having a viscosity of not lower than 50 mPa·s or a small surface tension is used. Said precursor membrane is also subjected to the hydrolysis treatment under constraint, while the precursor membrane is maintained in a widened or a stretched state.