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. 15, 1999
Filed:
Oct. 17, 1995
Naoto Miyoshi, Nagoya, JP;
Shinichi Matsumoto, Aichi-gun, JP;
Tsuneyuki Tanizawa, Toyota, JP;
Satoshi Iguchi, Mishima, JP;
Toshiaki Tanaka, Numazu, JP;
Shinichi Takeshima, Susono, JP;
Takaaki Kanazawa, Setagaya-ku, JP;
Takahiro Hayashi, Toyota, JP;
Motohisa Saiki, Aichi-gun, JP;
Kazuhiko Dohmae, Aichi-gun, JP;
Kiyoshi Yamazaki, Aichi-gun, JP;
Tadashi Suzuki, Seto, JP;
Koichi Kasahara, Ogasa-gun, JP;
Syuji Tateishi, Ogasa-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-ken, JP;
Cataler Industrial Co., Ltd., Shizuoka-ken, JP;
Abstract
A catalyst for purifying exhaust gases includes a porous support, at least one catalyst ingredient selected from Pt and Pd, and additional ingredients including (1) at least two rare-earth elements including La, (2) at least one rare-earth element including La and at least one transition element selected from Fe, Ni, Co and Mn, (3) at least two alkali metals, (4) at least one alkali metal and at least one rare-earth element including La, (5) at least one alkali metal and at least one transition element selected from Fe, Ni, Co and Mn, (6) at least two alkaline-earth metals, (7) at least one alkaline-earth metal and at least one rare-earth element including La, or (8) Ba, Li, La, Ce and Zr. A process for purifying an exhaust gas, by contacting the catalyst with an exhaust gas, is also provided.