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:
Aug. 17, 2004
Filed:
Sep. 25, 2000
Applicant:
Inventors:
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 2/370 ; B01J 2/374 ; B01J 2/300 ; B01J 2/340 ; B01J 2/342 ;
U.S. Cl.
CPC ...
B01J 2/370 ; B01J 2/374 ; B01J 2/300 ; B01J 2/340 ; B01J 2/342 ;
Abstract
A method for producing a hydrocyanic acid synthesis catalyst is disclosed which comprises sequential exposure of an iron surface, such as, for example, pig iron, to sequential oxidative and reductive atmospheres, preferably using repetitive cycles, the oxidative atmosphere preferably containing 5% to 3% by volume oxygen and the reductive atmosphere preferably containing 1% to 99% hydrogen.