Youngkun Lee

Person

Hachioji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical module and transmitting device
- Patent number 9,523,830
- Issue date Dec 20, 2016
- Hitachi, Ltd.
- Yasunobu Matsuoka
- G02 - OPTICS
Information Patent Grant
Semiconductor photodiode device and manufacturing method thereof
- Patent number 8,350,301
- Issue date Jan 8, 2013
- Hitachi, Ltd.
- Makoto Miura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Semiconductor photodiode device and manufacturing method thereof
- Patent number 8,294,213
- Issue date Oct 23, 2012
- Hitachi, Ltd.
- Makoto Miura
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Optical waveguides and optical devices with optical waveguides
- Patent number 6,931,189
- Issue date Aug 16, 2005
- Hitachi, Ltd.
- Youngkun Lee
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Broad band semiconductor optical amplifier module having optical am...
- Patent number 6,400,864
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Youngkun Lee
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL MODULE AND TRANSMITTING DEVICE
- Publication number 20150277071
- Publication date Oct 1, 2015
- Hitachi, Ltd
- Yasunobu Matsuoka
- G02 - OPTICS
Information Patent Application
GERMANIUM LIGHT-EMITTING ELEMENT
- Publication number 20120287959
- Publication date Nov 15, 2012
- Kazuki Tani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR PHOTODIODE DEVICE AND MANUFACTURING METHOD THEREOF
- Publication number 20110031578
- Publication date Feb 10, 2011
- Hitachi, Ltd.
- Makoto MIURA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
SEMICONDUCTOR PHOTODIODE DEVICE AND MANUFACTURING METHOD THEREOF
- Publication number 20110031529
- Publication date Feb 10, 2011
- Hitachi, Ltd.
- Makoto MIURA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
OPTICAL MODULE AND WAVELENGTH DIVISION MULTIPLEXING OPTICAL MODULE
- Publication number 20100247043
- Publication date Sep 30, 2010
- Hitachi, Ltd
- Toshiki SUGAWARA
- G02 - OPTICS
Information Patent Application
Optical waveguides and optical devices with optical waveguides
- Publication number 20030202764
- Publication date Oct 30, 2003
- Youngkun Lee
- G02 - OPTICS
Information Patent Application
Optical functional device and fabrication process for the same
- Publication number 20030185532
- Publication date Oct 2, 2003
- Kazuhiko Hosomi
- G02 - OPTICS

Youngkun Lee

Person

Patents Grantslast 30 patents

Optical module and transmitting device

Semiconductor photodiode device and manufacturing method thereof

Semiconductor photodiode device and manufacturing method thereof

Optical waveguides and optical devices with optical waveguides

Broad band semiconductor optical amplifier module having optical am...

Patents Applicationslast 30 patents

OPTICAL MODULE AND TRANSMITTING DEVICE

GERMANIUM LIGHT-EMITTING ELEMENT

SEMICONDUCTOR PHOTODIODE DEVICE AND MANUFACTURING METHOD THEREOF

SEMICONDUCTOR PHOTODIODE DEVICE AND MANUFACTURING METHOD THEREOF

OPTICAL MODULE AND WAVELENGTH DIVISION MULTIPLEXING OPTICAL MODULE

Optical waveguides and optical devices with optical waveguides

Optical functional device and fabrication process for the same