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:
Jun. 26, 1990
Filed:
Jul. 25, 1988
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A manufacturing method for a ceramic capacitor superior in breakdown voltage ability, comprising a process of baking opposite electrode on the surface of ceramic dielectric composed mainly of metal oxide and that, simultaneous with or after the above process, of baking in a ring-like shape insulating layers for air cutoff on at least the edges of an electrode. The opposite electrodes are formed by baking on the ceramic dielectric an electrode material composed mainly of metal of oxidization property more intense than that of the metal oxide at the ceramic dielectric material, in which, when the insulating layers on the electrode are baked, parts covered with the insulating layers at the opposite electrodes are cutoff from air, so that the ceramic dielectrics just below the parts are deprived by the opposite electrodes of inner oxygen so as to be intensively reduced and the reduced areas each become a semiconductor to largely decrease an insulating resistance value, thereby relaxing a potential gradient at the edge of the electrode and improving the breakdown voltage ability.