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. 03, 2007
Filed:
May. 30, 2001
Yasuhiko Sawada, Settsu, JP;
Toshinari Tanaka, Settsu, JP;
Kazuhiko Shimada, Settsu, JP;
Kazuhiro Mishima, Settsu, JP;
Yasuhiko Sawada, Settsu, JP;
Toshinari Tanaka, Settsu, JP;
Kazuhiko Shimada, Settsu, JP;
Kazuhiro Mishima, Settsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A process for preparing ground resin particles is provided by modifying a jet mill with opposed fluidized bed. By using a jet mill having a plurality of jet nozzles disposed at predetermined positions in a barrel of a grinding chamber toward the injection point of the grinding chamber and a bottom wall having a flat surface in part or in whole, parallel to the jet nozzles, or having a conical projection immediately below the injection point, resin particles to be ground are jetted with or without water, thereby being ground to obtain ground resin particles of an intended particle size.