Hwack Joo Lee

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Daejeon, KR

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Patents Grantslast 30 patents

Information Patent Grant
Dielectric ceramic compositions
- Patent number 6,613,707
- Issue date Sep 2, 2003
- Amotech Co., Ltd.
- Chang Hak Choi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for preparing dielectric ceramic compositions
- Patent number 6,593,263
- Issue date Jul 15, 2003
- Amotech Co., Ltd.
- Sahn Nahm
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
Dielectric ceramic compositions
- Publication number 20020119886
- Publication date Aug 29, 2002
- Chang Hak Choi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Method for preparing dielectric ceramic compositions
- Publication number 20020025902
- Publication date Feb 28, 2002
- Sahn Nahm
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES