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:
Jan. 31, 2017
Filed:
Sep. 10, 2010
Kimitoshi Sato, Inazawa, JP;
Kae Yamamura, Nagoya, JP;
Akira Morikawa, Nagoya, JP;
Akihiko Suda, Seto, JP;
Kimitoshi Sato, Inazawa, JP;
Kae Yamamura, Nagoya, JP;
Akira Morikawa, Nagoya, JP;
Akihiko Suda, Seto, JP;
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute, JP;
Abstract
A porous composite metal oxide, including a mixture of first ultrafine particles containing alumina and second ultrafine particles containing zirconia, wherein the first ultrafine particles and the second ultrafine particles are uniformly dispersed in such a way as to satisfy a condition that standard deviations of content ratios (% by mass) of all metal elements contained in the porous composite metal oxide at 0.1% by mass or more are each 10 or less, the standard deviations being obtained by measuring content ratios of the metal elements at 100 measurement points within a minute analysis region of 20 nm square by energy dispersive X-ray spectroscopy using a scanning transmission electron microscope equipped with a spherical aberration correction function.