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. 30, 2010
Filed:
Nov. 27, 2007
Yohei Ono, Kiyosu, JP;
Satoshi Yamazaki, Nagoya, JP;
Yuji Katsuda, Tsushima, JP;
Shuji Ueda, Nagoya, JP;
Yohei Ono, Kiyosu, JP;
Satoshi Yamazaki, Nagoya, JP;
Yuji Katsuda, Tsushima, JP;
Shuji Ueda, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A cordierite ceramic is provided, which includes at least zirconium oxide or hafnium oxide, and also includes titanium oxide. The molar ratio of zirconium (Zr), hafnium (Hf) and titanium (Ti) in terms of the moles in the form of the dioxides, respectively which is given by the formula [(ZrO+HfO)/TiO] is in a range of 0.1 to 5. In this cordierite ceramic, the phases of the components are contained mainly as zirconium titanate or hafnium titanate, and no heterogeneity in appearance, caused by change in color and generation of spots occurs. A honeycomb structure made of the cordierite ceramic is also provided.