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:
Nov. 11, 1997
Filed:
Jan. 16, 1996
Kouji Banno, Nagoya, JP;
Masahiro Sugiura, Aichi-ken, JP;
Yoko Kumai, Nagaoya, JP;
Haruo Doi, Nagoya, JP;
Tetsuo Nagami, Nagoya, JP;
Norihiko Aono, Shizuoka-ken, JP;
Koichi Kasahara, Shizuoka-ken, JP;
Shigeji Matsumoto, Shizuoka-ken, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Cataler Industrial Co., Ltd., Shizuoka-ken, JP;
Abstract
A catalyst for purifying exhaust gases comprises a catalyst carrier made of potassium titanate and a noble metal loaded on the catalyst carrier. The catalyst carrier is substantially free from alumina. This catalyst can oxidize at least hydrocarbons in exhaust gases at a high catalytic activity even at low temperatures, and at the same time can suppress SO.sub.2 from converting into sulfates. This catalyst does not employ substance like alumina exhibiting solid acidity as a catalyst carrier. Further, this catalyst can be used for purifying exhaust gases from diesel engines to suppress particulates and sulfates from being emitted, and to improve conversions of hydrocarbons and carbon monoxide.