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:
Sep. 30, 2003
Filed:
Feb. 21, 2001
Applicant:
Inventors:
Makoto Oonishi, Chiyoda-ku, JP;
Naoki Ohkuma, Chiyoda-ku, JP;
Yutaka Okuno, Chiyoda-ku, JP;
Yukio Murai, Chiyoda-ku, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 6/316 ; B01D 6/308 ; B01D 6/500 ;
U.S. Cl.
CPC ...
B01D 6/316 ; B01D 6/308 ; B01D 6/500 ;
Abstract
The rotary flat membrane disk is constructed in which circular membranes are stretched at both sides of a disk. The disk and the membrane are bonded to each other over the entire periphery by a peripheral bonding part, and they are also bonded to each other by a plurality of partial bonding parts arranged inside the peripheral bonding part. The partial bonding parts are formed like dots of 10 mm in diameter, and are arranged at every 30 degrees on circles of 500 mm and 600 mm in diameter.