06. International Patent Registration
Kyoung-Yong Lee, Young-Seok Choi, Jin-Hyuk Kim and Uk-Hee Jung, "Irregular-Pitch Regenerative Blower and Optimization Design Method for Same," Patent No. US10,590,938 B2, Mar. 17, 2020, United States of America.
Jin-Hyuk Kim, Young-Seok Choi and Joon-Hyung Kim, "Counter-Rotating Type Pump-Turbine, Independent Power Generation System Including Same, and Optimum Design Method for Counter-Rotating Pump Turbine," Patent No. ZL201480082122.8, July 19, 2019, The People’s Republic of China.
Jin-Hyuk Kim, Young-Seok Choi, Joon-Hyung Kim, Sung Kim and Him-Chan Lee, "Optimization Design Method of Reverse Rotation-Type Pump Turbine, Reverse Rotation-Type Pump Turbine Designed Thereby, and Self-Generation System," Patent No. ZL201580051446.X, July 30, 2019, The People’s Republic of China.