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:
Oct. 20, 2009
Filed:
Dec. 18, 2006
Kiyokazu Takemura, Chiyoda-ku, JP;
Kazuhiko Noto, Chiyoda-ku, JP;
Mitsuru Hatanaka, Matsudo, JP;
Takashi Fujimoto, Matsudo, JP;
Tatsuaki Tagashira, Matsudo, JP;
Kiyokazu Takemura, Chiyoda-ku, JP;
Kazuhiko Noto, Chiyoda-ku, JP;
Mitsuru Hatanaka, Matsudo, JP;
Takashi Fujimoto, Matsudo, JP;
Tatsuaki Tagashira, Matsudo, JP;
Hitachi Plant Technologies, Ltd., Tokyo, JP;
Abstract
To reuse support plate and to fix a membrane sheet by the same method both in a new product manufacturing and in regeneration. In a flat membrane element including a deposit fixed portion formed by lapping a membrane sheet performing solid-liquid separation onto a support plate supporting the membrane sheet and by emitting a laser to a circumferential edge of the membrane sheet to deposit fix the member sheet onto the support plate, and making an inside of the membrane sheet surrounded by the deposit fixed portion be a solid-liquid separating area; an embrocation having laser absorption property is applied on the surface of the membrane sheet of the deposit fixed portion. At the time of regeneration, such a portion of the membrane sheet that corresponds to the solid-liquid separating area is cut off and, after that, a new membrane sheet is lapped on the embrocation and the new membrane sheet and the embrocation are deposit fixed by a laser.