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:
Dec. 12, 2006
Filed:
Aug. 22, 2003
Yoshifumi Saito, Sabae, JP;
Yoshifumi Saito, Sabae, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A composite laminate, including shrink-prevention ceramic green sheets arranged on the main surfaces of an unfired ceramic laminate and having a sintering temperature greater than the firing temperature of the unfired ceramic laminate, is fired at a temperature which is greater than the sintering temperature of the unfired ceramic laminate, and which is less than the sintering temperature of the shrink-prevention ceramic green sheet. Thereafter, the shrink-prevention ceramic green sheets are removed in a first removing step of spraying water and compressed gas against the shrink-prevention ceramic green sheets so as to remove a portion thereof that has not reacted with a glass component of the unfired ceramic laminate, and in a second removing step of ceramic powder, spraying water, and compressed air, such that a residual material not removed in the first removing step is removed, and in a third removing step of supersonic-cleaning the ceramic multi-layer substrate after the first and second steps.