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:
Apr. 03, 2012
Filed:
Jun. 08, 2011
Atsushi Sudo, Takasaki, JP;
Tatsuhiko Kurakami, Sanyoonoda, JP;
Toshitake Kojima, Takasaki, JP;
Shigeo Hayashimoto, Tokyo, JP;
Yasushi Kobayashi, Sanyoonoda, JP;
Atsushi Sudo, Takasaki, JP;
Tatsuhiko Kurakami, Sanyoonoda, JP;
Toshitake Kojima, Takasaki, JP;
Shigeo Hayashimoto, Tokyo, JP;
Yasushi Kobayashi, Sanyoonoda, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
It is an object of the present invention to provide a catalyst having excellent performance and high mechanical strength for use in the production of methacrylic acid. A method for manufacturing a catalyst comprising essential active components of molybdenum, phosphorus, vanadium, cesium, ammonia, copper, and antimony for use in the production of methacrylic acid, comprising drying a slurry prepared by mixing a compound(s) containing the essential active components with water and then calcining the resulting dry powder and molding the calcined powder.