Do IL Chang

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Daejeon, KR

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for generating an optical fiber laser capable of tuning a...
- Patent number 6,556,596
- Issue date Apr 29, 2003
- Electronics and Telecommunications Research Institute
- Ho Young Kim
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Planar waveguide-type optical amplifier switch
- Patent number 6,538,804
- Issue date Mar 25, 2003
- Electronics and Telecommunications Research Institute
- Kyong Hon Kim
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber mode-locked laser
- Patent number 6,385,216
- Issue date May 7, 2002
- Electronics and Telecommunications Research Institute
- Do Il Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber raman laser
- Patent number 6,163,554
- Issue date Dec 19, 2000
- Electronics and Telecommunications Research Institute
- Do IL Chang
- H01 - BASIC ELECTRIC ELEMENTS