Electrical resistors – With base extending along resistance element – Resistance element coated on base
Reexamination Certificate
2008-04-01
2008-04-01
Lee, K. Richard (Department: 2832)
Electrical resistors
With base extending along resistance element
Resistance element coated on base
C338S307000
Reexamination Certificate
active
07352273
ABSTRACT:
The invention relates to a method of making a chip resistor using a material substrate for which are set a plurality of first cutting lines extending in a first direction and a plurality of second cutting lines extending in a second direction perpendicular to the first direction. The method includes an upper electrode forming step A for forming a thick upper conductor layer on the upper surface of the substrate by printing and baking a metal organic paste, a lower electrode forming step B for forming a thick lower conductor layer on the lower surface of the substrate by printing and baking metal organic paste, and a resistor element forming step C for forming a thin resistor layer by depositing a resistor material on the upper surface of the substrate. Preferably, the upper and the lower surfaces of the material substrate are flat.
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Hamre Schumann Mueller & Larson P.C.
Lee K. Richard
Rohm & Co., Ltd.
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