Doohwan Lee

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Gyonggi-do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Optical attenuator using multi-mode interference
- Patent number 6,728,463
- Issue date Apr 27, 2004
- Doohwan Lee
- G02 - OPTICS
Information Patent Grant
Optical waveguide filter using multi-mode interference
- Patent number 6,690,856
- Issue date Feb 10, 2004
- Hanbit Information & Communication Co.
- Doohwan Lee
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical waveguide filter using multi-mode interference
- Publication number 20030077033
- Publication date Apr 24, 2003
- Doohwan LEE
- Doohwan Lee
- G02 - OPTICS
Information Patent Application
Optical attenuator using multi-mode interference
- Publication number 20030053788
- Publication date Mar 20, 2003
- Doohwan LEE
- Doohwan Lee
- G02 - OPTICS