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:
Mar. 05, 2013
Filed:
Jun. 18, 2009
Kazuhiko Koike, Okazaki, JP;
Masayuki Kobayashi, Kuwana, JP;
Kazuhiko Koike, Okazaki, JP;
Masayuki Kobayashi, Kuwana, JP;
Nippon Soken, Inc., Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A composite ceramic body with increased strength is disclosed. The composite ceramic body, composed of a matrix of alumina particles with a mean particle diameter ranging from 0.7 to 1.8 μm and nano-zirconia particles with a particle diameter of 0.15 μm or less, wherein the alumina particles and the nano-zirconia particles fall in a respective weight percentage ratio ranging from 80:20 to 95:5 with a relative density of 93% or more and wherein in a cross section, a total sum of surface areas of pores, having cross-sectional areas equal to or greater than surface areas of circles having the same diameters as a mean particle diameter of the alumina particles, falls in a value of 2.2% or less based on a whole of the cross-sectional areas.