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. 27, 2009
Filed:
Mar. 15, 2006
Wataru Kotani, Nagoya, JP;
Takehiko Watanabe, Nagoya, JP;
Wataru Kotani, Nagoya, JP;
Takehiko Watanabe, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
There are newly provided an index which quantitatively indicates shapes of kaolin particles, and a method of measuring the index. There is also provided a method of manufacturing a low-thermal-expansion honeycomb structure suitable for an application such as a car exhaust gas purifying catalyst carrier by use of the kaolin particles whose index is not less than a predetermined value. A certain amount of kaolin particlesare pressed and filled into a container, peak intensities of the kaolin particlesin (200), (020), and (002) faces are measured by X-ray diffraction, respectively, and a cleavage index of the kaolin particlesis calculated from the resultant measured values by the following equation (1):Cleavage index=(002)/[(200)+(020)+(002)]  (Equation 1),wherein (200), (020), and (002) denote values of the peak intensities of the kaolin particles measured in the (200), (020), and (002) faces by the X-ray diffraction, respectively.