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. 02, 2007
Filed:
Jan. 31, 2003
Hideaki Ninomiya, Tokyo, JP;
Haruo Nishino, Tokyo, JP;
Kiyoshi Hatanaka, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A method for producing a multilayer ceramic substrate having a cavity formed therein includes punching a through opening corresponding to the cavity in green sheets constituting a laminate, and printing a conductor at a predetermined position of the green sheets, laminating the green sheets to constitute a green sheet laminate, and applying a pressure to the green sheet laminate by using a compression member having a projection at a position corresponding to the cavity to thereby compress the green sheet laminate. The projection has a height which is equal to the depth of the cavity multiplied by compression ratio of the green sheet laminate, and the green sheet laminate is compressed by applying the pressure such that compression ratio of the bottom of the cavity is identical with the compression ratio of other parts of the green sheet laminate.