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Patent Searching and Data


Title:
LIGHT-COLORED MAGNETIC PARTICLES HAVING IMPROVED DURABILITY AND CHEMICAL RESISTANCE
Document Type and Number:
WIPO Patent Application WO/2019/132232
Kind Code:
A1
Abstract:
The present invention can provide light-colored magnetic particles having a zirconium oxide coating layer formed on a magnetic core, and having a silver coating layer formed on the zirconium oxide coating layer, and a part of the surface of the zirconium oxide coating layer is exposed to the outside, but chemical resistance is excellent, and thus the magnetic particles hardly cause a change of magnetic characteristics so as to be suitable for security elements.

Inventors:
KIM, Hong Keon (#409-1701, 32 Noeunseo-ro 210beon-gil,Yuseong-Gu, Daejeon, 34082, KR)
CHOE, Won Gyun (#103-601, 39 World Cup-daero 290beon-gil,Yuseong-Gu, Daejeon, 34198, KR)
KIM, Su Dong (#112-1503, 300 Munji-ro,Yuseong-Gu, Daejeon, 34050, KR)
KIM, Hyun Soo (#506, 51 Oncheonbuk-ro,Yuseong-Gu, Daejeon, 34185, KR)
KIM, E Den (24 Hwaun-ro 304beon-gil, Seo-Gu, Gwangju, 61915, KR)
CHOI, Hye Jun (#204, 34-16 Mannyeon-ro 67beon-gil,Seo-Gu, Daejeon, 35203, KR)
KANG, Ju Hee (#104-1504, 9 Gyeryong-ro 536beon-gil,Seo-Gu, Daejeon, 35268, KR)
Application Number:
KR2018/013521
Publication Date:
July 04, 2019
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP. (80-67, Gwahak-roYuseong-Gu, Daejeon, 34132, KR)
International Classes:
H01F3/02; B42D25/29; B42D25/369; C09D5/23; C09D11/03; H01F1/01
Foreign References:
KR101718505B12017-03-22
KR20130043410A2013-04-30
KR20060028393A2006-03-29
KR100581456B12006-05-23
JPH08138921A1996-05-31
Attorney, Agent or Firm:
PLUS INTERNATIONAL IP LAW FIRM (10F 809, Hanbat-daeroSeo-Gu, Daejeon, 35209, KR)
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