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:
Dec. 29, 1998
Filed:
Mar. 19, 1997
Applicant:
Inventors:
Kazuharu Ogasawara, Tokyo, JP;
Tomio Kato, Tokyo, JP;
Norikazu Okuda, Tokyo, JP;
Tetsuya Konishi, Ibaraki-ken, JP;
Kenji Kato, Tokyo, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423588 ; 423589 ; 423590 ; 502243 ; 502262 ;
Abstract
A method for preparing hydrogen peroxide in accordance with an anthraquinone method, comprising hydrogenating at least one anthraquinone with a hydrogenation catalyst comprising palladium and at least one alkali metal, supported on a silica carrier, wherein the at least one alkali metal is in an amount of 0.1% to 5 wt % based on the weight of the silica carrier.