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:
Dec. 18, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventor:
Yutaka Yamamoto, Nango, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 2191 / ; 338195 ;
Abstract
A resistance element manufacturing method which forms on the surface of an electrically insulating base layer including an organic material to be carbonized by irradiation of a laser beam a laser beam transmitting electrically insulating film not carbonized by the irradiation of the laser beam, and irradiates the laser beam on the base layer through the film from one side thereof, thereby carbonizing the irradiated portion of the base layer to form a resistance layer.