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. 18, 1990
Filed:
Apr. 27, 1989
Applicant:
Inventors:
Yoshihisa Katoh, Toyota, JP;
Takashi Ogawa, Kariya, JP;
Mitsumasa Hasegawa, Kariya, JP;
Masashi Fujimoto, Tokoake, JP;
Masaaki Hayashi, Anjyo, JP;
Assignee:
Toshiba Ceramics Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210119 ; 210123 ; 2103232 ; 21033301 ; 210335 ; 210411 ; 210450 ; 2105101 ;
Abstract
An apparatus for filtering a liquid, includes supplying a starting liquid from a container to a passage of a pipe-like filter set in a filter casing, passing the starting liquid through the passage of the filter thereby to produce the filtrate, sending back the unfiltered liquid to the container, and back washing the filter by means of a hydraulic pressure device having a piston movable in a cylinder in such a manner that the filtrate is moved by the piston of the hydraulic device.