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.:

US 7968043 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 28, 2011

Filed:

Sep. 27, 2007
Applicants:

Yuki Ito, Takatsuki, JP;

Osamu Chikagawa, Yasu, JP;

Tetsuya Ikeda, Kyoto, JP;

Inventors:

Yuki Ito, Takatsuki, JP;

Osamu Chikagawa, Yasu, JP;

Tetsuya Ikeda, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 33/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

An auxiliary-layer-lined unfired ceramic body, having a step portion in a principal surface thereof, has an unfired ceramic body and an auxiliary layer which is adhered to one principal surface of the unfired ceramic body and which is made of a material that is substantially unsinterable at a temperature at which the unfired ceramic body is fired. The auxiliary-layer-lined unfired ceramic body is fired at a temperature at which the unfired ceramic body is sinterable but the auxiliary layer is substantially unsinterable, while the auxiliary layer remains adhered to the unfired ceramic body. A pressing operation is performed using a die having a projection placed on the side of the auxiliary-layer-lined unfired ceramic body retaining the auxiliary layer, so that the step portion, having a shape corresponding to the outer shape of the die projection, is formed in the side of the auxiliary-layer-lined unfired ceramic body retaining the auxiliary layer.


Find Patent Forward Citations

Ito, Yuki. (2011). Ceramic substrate production process and ceramic substrate produced using the process (U.S. Patent No. 7968043). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7968043

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