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:
Aug. 05, 2003
Filed:
Mar. 01, 2002
Robert G. Garber, San Jose, CA (US);
InFlos Designs, Santa Clara, CA (US);
Abstract
A single cartridge filter housing assembly for the filtration of etching liquids, deionized water, slurries and other liquids used in the semiconductor, pharmaceutical and chemical industries. It comprises a bottom housing and a top housing with an O-ring in between and a nut ring engaging top and bottom housings in order to compress the O-ring thus forming a sealed cavity for the cartridge. The bottom housing holds the nose of the cartridge in a concentric recess and holds the cartridge top centered by several radial protrusions in its mouth. An inlet and an outlet at the bottom of the bottom housing for the liquid to be filtered are coaxial for easy plumbing connections. The top housing carries a vent tube to use the air within to stabilize the liquid level in spite of pressure variations because of pump action.