Do-Il Chang

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Dual wavelength optical fiber laser
- Patent number 6,560,247
- Issue date May 6, 2003
- Electronics and Telecommunications Research Institute
- Do-Il Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mode-locked laser stabilizing apparatus and method thereof
- Patent number 6,560,251
- Issue date May 6, 2003
- Electronics and Telecommunications Research Institute
- Min Yong Jeon
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber cascaded Raman laser scheme
- Patent number 6,426,965
- Issue date Jul 30, 2002
- Electronics and Telecommunications Research Institute
- Do Il Chang
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Dual wavelength optical fiber laser
- Publication number 20020080832
- Publication date Jun 27, 2002
- Do-Il Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical device for generating a plurality of optical signals
- Publication number 20020001125
- Publication date Jan 3, 2002
- Do-Il Chang
- H01 - BASIC ELECTRIC ELEMENTS