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:
Jun. 03, 1980
Filed:
Nov. 03, 1977
Applicant:
Inventors:
Hideya Inaba, Osaka, JP;
Kazuo Maeda, Osaka, JP;
Yasumi Kamino, Osaka, JP;
Toshio Hama, Osaka, JP;
Kenichi Nagai, Osaka, JP;
Masayoshi Ichiki, Osaka, JP;
Assignee:
Hitachi Shipbuilding & Engineering Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
252440 ; 252464 ; 252472 ; 252470 ; 2524 / ; 423239 ;
Abstract
A highly active denitrating catalyst is produced by converting the surface layer of steel material to an aluminum alloy, treating the resulting steel material with an aluminum dissolving solution to dissolve out the aluminum and to render the surface layer porous, and immersing the steel material having the porous surface layer in a solution containing a vanadium compound to cause the porous surface layer to support the vanadium compound.