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. 21, 2020
Filed:
May. 03, 2015
Applicant:
Kaijo Corporation, Tokyo, JP;
Inventor:
Yusuke Sakurai, Tokyo, JP;
Assignee:
KAIJO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/00 (2006.01); B23K 11/24 (2006.01); B23K 101/40 (2006.01);
U.S. Cl.
CPC ...
H01L 24/78 (2013.01); B23K 11/241 (2013.01); B23K 2101/40 (2018.08); H01L 2224/78 (2013.01); H01L 2224/78271 (2013.01); H01L 2224/78301 (2013.01); H01L 2224/85045 (2013.01); H01L 2924/00014 (2013.01);
Abstract
A ball forming device includes a first current control circuit to control discharge current arranged between a leading end of a wire and one electrode of a discharge continuing power source for causing discharge current to flow after dielectric breakdown, a second current control circuit to control shunting of discharge current arranged between a discharge electrode and the other electrode of the discharge continuing power source, and a fixed resistor connected to the second current control circuit in parallel as a shunt and controls current flowing through the second current control circuit, thereby a discharge voltage value is adequately changed.