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:
Mar. 13, 2012
Filed:
Jul. 05, 2007
Yuzuru Ishibashi, Tokyo, JP;
Akihiro Watanabe, Tokyo, JP;
Yuzuru Ishibashi, Tokyo, JP;
Akihiro Watanabe, Tokyo, JP;
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Abstract
The present invention relates to a method of producing a hollow fiber membrane bundle having an end fixed with a casting material wherein the ends of hollow fiber membranes are fixed with the casting material in a condition that an insert is placed inside a hollow fiber membrane bundle at a position inner than a region where a fixing portion is formed, and then the insert is removed from the inside of the hollow fiber membrane bundle; and relates to a method of producing a hollow fiber membrane filter element through this method. The hollow fiber membrane bundle produced by the method of the present invention can be used in various types of filtration treatment such as external pressure filtration.