Chip resistor and method for making the same

Electrical resistors – With base extending along resistance element – Resistance element coated on base

Reexamination Certificate

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C338S314000, C338S328000

Reexamination Certificate

active

07098768

ABSTRACT:
A chip resistor includes: an insulating chip substrate11having an upper surface formed with a resistive film12and a pair of left and right upper electrodes13at two ends thereof; a cover coat14covering the resistive film; auxiliary upper electrodes15formed on upper surfaces of the upper electrodes13to overlap the cover coat14; a left and a right side electrodes16formed on a left and a right end surfaces11aof the insulating substrate11; and metal plate layers formed on surfaces of the auxiliary upper electrodes and side electrodes. The cover coat14is formed with an uppermost over coat19covering a region where the auxiliary upper electrodes15overlap the cover coat14, whereby the upper electrodes13and the auxiliary upper electrodes15are protected from migration caused by sulfur gases.

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patent: 5917403 (1999-06-01), Hashimoto et al.
patent: 5966067 (1999-10-01), Murakami et al.
patent: 6127722 (2000-10-01), Doi et al.
patent: 6492896 (2002-12-01), Yoneda
patent: 6636143 (2003-10-01), Hashimoto et al.
patent: 2001/0000215 (2001-04-01), Oh
patent: 56-148804 (1981-11-01), None
patent: 57-7915 (1982-01-01), None
patent: 8-236302 (1996-09-01), None
patent: 2001-23801 (2001-01-01), None
patent: 2001-110601 (2001-04-01), None

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