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:
Mar. 22, 2016
Filed:
Sep. 14, 2010
Yoshihito Yoshizawa, Mishima-gun, JP;
Naoki Ito, Mishima-gun, JP;
Shinichi Kazui, Kumagaya, JP;
Makoto Sasaki, Kumagaya, JP;
Yoshihito Yoshizawa, Mishima-gun, JP;
Naoki Ito, Mishima-gun, JP;
Shinichi Kazui, Kumagaya, JP;
Makoto Sasaki, Kumagaya, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
A soft-magnetic, amorphous alloy ribbon produced by a rapid quenching method, having transverse lines of recesses formed on its surface by laser beams with predetermined longitudinal intervals, with a doughnut-shaped projection formed around each recess; doughnut-shaped projections having smooth surfaces substantially free from splashes of the alloy melted by the irradiation of laser beams, and a height tof 2 μm or less; and a ratio t/T of the depth tof the recesses to the thickness T of the ribbon being in a range of 0.025-0.18, thereby having low iron loss and low apparent power.