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. 08, 2025
Filed:
Aug. 05, 2019
Applicant:
Korea Minting, Security Printing & Idcard Operating Corp., Daejeon, KR;
Inventors:
Soo Dong Kim, Daejeon, KR;
Won Kyun Choe, Daejeon, KR;
Sung Hyun Joo, Sejong, KR;
Hong Keon Kim, Daejeon, KR;
Hyun Soo Kim, Daejeon, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/047 (2006.01); B41M 3/14 (2006.01); C09D 11/03 (2014.01); C22C 30/02 (2006.01); C23C 18/16 (2006.01); C23C 18/44 (2006.01); H01F 1/06 (2006.01);
U.S. Cl.
CPC ...
H01F 1/047 (2013.01); B41M 3/14 (2013.01); C09D 11/03 (2013.01); C22C 30/02 (2013.01); C23C 18/1637 (2013.01); C23C 18/1651 (2013.01); C23C 18/44 (2013.01); H01F 1/06 (2013.01);
Abstract
Disclosed is an AlNiCo-based hard magnetic particle containing Al, Ni, Co, Cu, Ti, and the balance of Fe. The AlNiCo-based hard magnetic particle contains Co in an amount of 10 to 17 wt %, has a coercive force of 250-450 Oe, and has a residual magnetization/coercive force rate of 0.06 or more. The AlNiCo-based hard magnetic particle according to the present invention can advantageously guarantee magnetic properties suitable for being detected by a magnetic reluctance device due to a low content of Co.