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. 14, 2012
Filed:
Jul. 22, 2005
Akira Morikawa, Nagoya, JP;
Toshitaka Tanabe, Aichi, JP;
Kae Yamamura, Nagoya, JP;
Naoki Takahashi, Nagoya, JP;
Hiromasa Suzuki, Toyota, JP;
Akemi Sato, Toyota, JP;
Mamoru Ishikiriyama, Fujieda, JP;
Takaaki Kanazawa, Toyota, JP;
Oji Kuno, Toyota, JP;
Akira Morikawa, Nagoya, JP;
Toshitaka Tanabe, Aichi, JP;
Kae Yamamura, Nagoya, JP;
Naoki Takahashi, Nagoya, JP;
Hiromasa Suzuki, Toyota, JP;
Akemi Sato, Toyota, JP;
Mamoru Ishikiriyama, Fujieda, JP;
Takaaki Kanazawa, Toyota, JP;
Oji Kuno, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Kabushiki Kaisha Toyota Chuo, Aichi-gun, Aichi, JP;
Abstract
A particulate inorganic oxide containing aluminum oxide, a metal oxide forming no composite oxide with aluminum oxide, and an additional element including at least one of a rare-earth element and an alkali earth element, the inorganic oxide containing a secondary particle formed by aggregating primary particles; wherein at least a part of the secondary particle includes a plurality of first primary particles, each having a particle size of 100 nm or less, containing aluminum oxide and the additional element, and a plurality of second primary particles, each having a particle size of 100 nm or less, containing the metal oxide and the additional element; wherein at least a part of the first and second primary particles has a surface concentrated region where the additional element has a locally increased content in a surface layer part thereof.