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. 02, 1977
Filed:
Apr. 16, 1975
Applicant:
Inventors:
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
252464 ; 252463 ; 252465 ; 2524 / ;
Abstract
The present invention relates to a catalyst carrier characterized by the fact that it comprises a substance which promotes a transition to .alpha.-alumina, which substance is located near the surface of a carrier composed mainly of alumina and which carrier is subjected to a heat treatment under appropriate conditions, thereby causing the transition of said alumina to .alpha.-alumina, with those pores near the surface made larger in diameter than those pores located more deeply within the carrier. The invention also includes a method of manufacturing said catalyst carrier.