Hyek-Bok Lee

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Suwon, KR

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Patents Grantslast 30 patents

Information Patent Grant
Cathode material including rare earth metal used as electron emissi...
- Patent number 6,800,990
- Issue date Oct 5, 2004
- Samsung SDI Co., Ltd.
- Jong-Seo Choi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Cathode material for electron beam apparatus
- Publication number 20010009348
- Publication date Jul 26, 2001
- Jong-Seo Choi
- H01 - BASIC ELECTRIC ELEMENTS