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:
Aug. 13, 1985
Filed:
Jun. 14, 1983
Applicant:
Inventor:
Hideaki Takehara, Yokohama, JP;
Assignee:
Victor Company of Japan, Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369173 ; 29 2542 ; 2191 / ;
Abstract
A diamond body is heated in an environment of vacuum or inert gas containing a small amount of oxygen at a predetermined elevated temperature to allow the carbon atoms of the surface areas to form a layer of graphite on the diamond body. The diamond body is then lapped so that the graphite layer is shaped into the form of a stylus electrode.