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:
Feb. 06, 1990
Filed:
Jul. 25, 1988
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for fabricating a hybrid IC substrate comprises the steps of baking a conductor of a first group on an insulating ceramic substrate, forming an insulating porous active layer including a glass component and a small amount of a metal component having a catalytic action for electroless plating, forming a resist pattern on the active layer by using a photomask, and forming a conductor of a second group by electroless plating on a portion of the active layer not covered with the resist, whereby a portion of the active layer sandwiched between the conductors of the first and second groups is rendered conductive and a portion of the active layer in direct contact with the insulating substrate is maintained as an insulator.