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:
Apr. 09, 2013
Filed:
Sep. 21, 2009
Applicants:
Hiroshi Kishi, Akita, JP;
Masanori Fukui, Akita, JP;
Masaki Morikawa, Akita, JP;
Inventors:
Assignee:
Japan Super Quartz Corporation, Akita-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 5/027 (2006.01); C03B 19/01 (2006.01); C03B 19/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An arc discharge method includes the steps of heating and melting a non-conductive object by arc discharge using a plurality of carbon electrodes in a output range of 300 to 12,000 kVA; and setting a ratio of the distance between a contact position at which the carbon electrodes come in contact with each other and a front end to the diameter of the carbon electrode during the start of the arc discharge to be in the range of 0.001 and 0.9.