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. 02, 2003
Filed:
Sep. 18, 2002
Applicant:
Inventors:
Toshihiko Ujita, Kanagawa, JP;
Junji Shimoda, Kanagawa, JP;
Akira Tsujimoto, Kanagawa, JP;
Yasuo Kotaki, Kanagawa, JP;
Kiyomitsu Kudo, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 5/322 ; B01D 1/900 ;
U.S. Cl.
CPC ...
B01D 5/322 ; B01D 1/900 ;
Abstract
A gas-liquid separation membrane is provided with high reliability and performance while having gas-permeable pores formed independently of each other in even pore size and in uniform distribution. The gas-liquid separation membrane has a plurality of gas-permeable pores that permit permeation of gas and that prevent permeation of liquid by capillary force, and the plurality of gas-permeable pores are formed independently of each other and in even pore size by laser machining.