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:
Sep. 13, 2011
Filed:
Sep. 13, 2007
Masahide Shima, Himeji, JP;
Tadashi Sento, Himeji, JP;
Masatsugu Mikawa, Kawasaki, JP;
Hiroyuki Hirota, Kawasaki, JP;
Masahide Shima, Himeji, JP;
Tadashi Sento, Himeji, JP;
Masatsugu Mikawa, Kawasaki, JP;
Hiroyuki Hirota, Kawasaki, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A catalyst for producing alkylene oxide including fine metal silver particles dispersed and supported on a carrier, wherein not less than 90% of the fine metal silver particles have silver particle diameters of 2 to 100 nm, is disclosed. The catalyst can be produced by impregnating a carrier with a liquid containing a silver compound or a silver ion; drying the carrier; and then irradiating the carrier with microwave to form fine metal silver particles in dispersed state on the carrier. This catalyst is used for producing olefin oxide by contact gas-phase oxidation of olefin by a molecular-oxygen-containing gas.