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, 2004
Filed:
Jun. 24, 2002
Koji Hattori, Shiga-ken, JP;
Shinsei Okabe, Takatsuki, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A method for making a raw ceramic powder includes the steps of mixing and pulverizing a basic powder, a first organic metal compound containing a metallic element for modifying the electrical characteristics of the basic powder, a second organic metal compound containing a metallic element for improving the sinterability of the basic powder, and an organic solvent, to form a slurry, the first organic metal compound and the second organic metal compound being soluble in the organic solvent; removing the organic solvent from the slurry to obtain the basic powder, the surfaces of the particles of the basic powder being coated with the first organic metal compound and the second organic metal compound; and heat-treating the basic powder at a temperature higher than the decomposition temperature of the first organic metal compound and lower than the decomposition temperature of the second organic metal compound.