TU

Takashi Udagawa

SD Showa Denko: 3 patents #3 of 61Top 5%
SK Showa Denko K.K.: 3 patents #4 of 112Top 4%
📍 Chichibu, JP: #3 of 17 inventorsTop 20%
Overall (2003): #5,076 of 273,478Top 2%
6
Patents 2003

Issued Patents 2003

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6664575 GaInP stacked layer structure and field-effect transistor manufactured using the same 2003-12-16
6645302 Vapor phase deposition system 2003-11-11
6541797 Group-III nitride semiconductor light-emitting device 2003-04-01
6541799 Group-III nitride semiconductor light-emitting diode 2003-04-01
6531716 Group-III nitride semiconductor light-emitting device and manufacturing method for the same 2003-03-11
6512248 Semiconductor light-emitting device, electrode for the device, method for fabricating the electrode, LED lamp using the device, and light source using the LED lamp Ryouichi Takeuchi, Kazuhiro Mitani, Wataru Nabekura, Takaharu Hoshina 2003-01-28