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:
May. 01, 2001
Filed:
Jan. 07, 1999
Kozo Yamasaki, Gifu, JP;
Hideshi Matsubara, Nagoya, JP;
Kazuo Kimura, Aichi, JP;
Motohiko Itai, Gifu, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A method of making a laminate ceramic substrate with domed pads is provided. In the method, a ceramic green sheet is prepared which has a pair of first and second opposite main surfaces and a plurality of through holes extending between the first and second main surfaces. The ceramic green sheet is placed upon a flat elastic sheet in such a manner that the first main surface of the ceramic green sheet is in contact with the flat elastic sheet. Metallizing ink is filled into the through hole so that a portion of the ink protrudes beyond the first main surface to form domed protruded portions by elastic deformation of the elastic sheet. The green sheet (optionally placed upon at least one other green sheet in such a manner that the second main surface is in contact with the other green sheet) is then sintered, thereby forming the domed, protruded portions of the metallizing ink into domed pads.