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:
Mar. 18, 2003
Filed:
Jan. 15, 2002
Toshihiro Teramae, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A chip resistor reveals a crack for permitting easy detection of it in the inspection process, suffers from minimum variation of the resistance during calcination of a protection film, and is not prone to defects such as pinholes that do not come to the surface. This chip resistor is produced by forming a resistive layer on the surface of an insulating substrate, providing electrodes at both ends of the resistive layer, forming a resistive-layer protection film on the surface of the resistive layer, forming an intermediate protection film on the surface of the resistive-layer protection film, and forming a surface protection film on the surface of the intermediate protection film. In addition, in this chip resistor, the resistive-layer protection film, intermediate protection film, and surface protection film are all made of an identical material.