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:
Jul. 29, 2008
Filed:
Mar. 23, 2005
Fumio Nozaki, Tokyo, JP;
Fumio Nozaki, Tokyo, JP;
Entegris, Inc., Chaska, MN (US);
Abstract
The present invention provides a filter that can minimize the amount of residual liquid within the housing or container with a simplified construction. The article includes a cylinder portion having a cylindrical internal space with both ends open, a cylindrically formed pleated filterinserted in the internal space of the cylinder portionin contact with the inner wall of the cylinder portionand having upper and lower edges liquid-tightly sealed. A perforate inner coresupports the inner surface of the pleated filter, lower and upper end capsare liquid-tightly bonded to the respective ends of the cylinder portion. A liquid distribution passagecommunicates with gaps between the pleats of the pleated filterfrom the lower portion of the cylinder portion. A liquid feed inletcommunicates with the liquid distribution passageformed between the periphery of the pleated filter and a tapered inner wall surfaceof the cylinder portion. A filtrate liquid withdrawal passagecommunicates with an internal passageof the perforate core, and a filtrate outletcommunicates with the withdrawal passage.