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:
Jan. 30, 1990
Filed:
Apr. 18, 1988
Shoichi Iwaya, Tokyo, JP;
Hitoshi Masumura, Tokyo, JP;
Hiroki Takahashi, Tokyo, JP;
Masaaki Ohkawara, Yokohama, JP;
Katsumi Kobayashi, Yokohama, JP;
Takashi Ito, Yokohama, JP;
TDK Corporation, Tokyo, JP;
Ohkawara Kakohki Co., Ltd., Yokohama, JP;
Abstract
The spray drying process and the apparatus therefor, of the present invention use a spray drying chamber formed by a heat-resistant porous membrane. Said porous membrane enables rapid separation of a discharge gas and a produced powder and accordingly total recovery of the produced powder from the spray drying chamber. Therefore, there occurs no nonuniformity in product composition; cleaning and blowing-off of adhered fine powder can be conducted rapidly and easily even in frequent product changes inevitable with a less grade larger quantity production system; as a result, a fine powder of higher quality and higher purity can be produced.