RK

Ryota Kitagawa

KT Kabushiki Kaisha Toshiba: 79 patents #137 of 21,451Top 1%
TS Toshiba Energy Systems & Solutions: 4 patents #70 of 569Top 15%
AE Asahi Kasei E-Materials: 1 patents #57 of 141Top 45%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Overall (All Time): #22,439 of 4,157,543Top 1%
80
Patents All Time

Issued Patents All Time

Showing 76–80 of 80 patents

Patent #TitleCo-InventorsDate
8450768 Semiconductor light-emitting element and process for production thereof Koji Asakawa, Akira Fujimoto, Tsutomu Nakanishi, Eishi Tsutsumi 2013-05-28
8357557 Semiconductor light-emitting device and process for production thereof Akira Fujimoto, Koji Asakawa, Hidefumi Yasuda, Yasuhiko Akaike, Takeyuki Suzuki 2013-01-22
8101964 Semiconductor light-emitting element and process for production thereof Koji Asakawa, Akira Fujimoto, Tsutomu Nakanishi, Eishi Tsutsumi 2012-01-24
8089081 Semiconductor light emitting device Akira Fujimoto, Koji Asakawa, Takeyuki Suzuki 2012-01-03
7928353 Displaying device and lighting device employing organic electroluminescence element Akira Fujimoto, Koji Asakawa, Tsutomu Nakanishi, Eishi Tsutsumi 2011-04-19