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:
Nov. 30, 1999
Filed:
Jun. 11, 1997
Applicant:
Inventors:
Yoshinori Terui, Shibukawa, JP;
Katsuyoshi Tsunoda, Shibukawa, JP;
Assignee:
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; C25F / ; H01L / ; H05K / ;
U.S. Cl.
CPC ...
205640 ; 205660 ; 205644 ; 205645 ; 295921 ;
Abstract
A method of making a needle electrode is such that a neck portion is formed in a thin wire made of a tungsten single crystal and the thin wire is cut at the neck portion by feeding an electric current in electrolyte.