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:
May. 26, 2015
Filed:
Sep. 10, 2010
Kenichi Miyaki, Otake, JP;
Motoo Yanagita, Yokohama, JP;
Hirokazu Watanabe, Yokohama, JP;
Takashi Karasuda, Yokohama, JP;
Kenichi Miyaki, Otake, JP;
Motoo Yanagita, Yokohama, JP;
Hirokazu Watanabe, Yokohama, JP;
Takashi Karasuda, Yokohama, JP;
Dia-Nitrix Co., Ltd., Tokyo, JP;
Abstract
A process for producing a composite oxide catalyst which includes a step of preparing an aqueous slurry containing at least iron and antimony and composed of a liquid phase and a solid phase, a step of drying the aqueous slurry to obtain a dried material, and a step of calcining the obtained dried material, wherein of the precipitated particles having a particle size of not less than 1 μm but less than 150 μm contained within the aqueous slurry, the proportion of precipitated particles having a particle size of not less than 1 μm but less than 10 μm is within a range from 40 to 90% by volume, and the proportion of precipitated particles having a particle size of not less than 10 μm but less than 150 μm is within a range from 10 to 60% by volume.