Hirofumi Yoshida

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mn-Zn-co ferrite
- Patent number 8,668,839
- Issue date Mar 11, 2014
- JFE Chemical Corporation
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Mn-Zn-Co ferrite core and method for producing the same
- Patent number 8,518,289
- Issue date Aug 27, 2013
- JFE Chemical Corporation
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Mn—Zn ferrite core and method for producing the same
- Patent number 8,512,589
- Issue date Aug 20, 2013
- JFE Chemical Corporation
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
MnZn ferrite and a transformer magnetic core
- Patent number 8,404,142
- Issue date Mar 26, 2013
- JFE Chemical Corporation
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
MN-ZN-CO FERRITE CORE AND METHOD FOR PRODUCING THE SAME
- Publication number 20110279216
- Publication date Nov 17, 2011
- JFE CHEMICAL CORPORATION
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
MN-ZN-CO FERRITE
- Publication number 20110278491
- Publication date Nov 17, 2011
- JFE CHEMICAL CORPORATION
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
MN-ZN FERRITE CORE AND METHOD FOR PRODUCING THE SAME
- Publication number 20110279217
- Publication date Nov 17, 2011
- JFE CHEMICAL CORPORATION
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
MnZn FERRITE AND A TRANSFORMER MAGNETIC CORE
- Publication number 20110012702
- Publication date Jan 20, 2011
- JFE CHEMICAL CORPORATION
- Hirofumi Yoshida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES