Choi Young-do (Inventor 1), “Jig and fixture for assembling and disassembling a performance testing device for a scaled-down hydraulic machine model,” Application No. 10-2024-0196468, Domestic, Republic of Korea, Application Date Dec. 26, 2024.
Choi Young-do (Inventor 1), “Multi-swirl type ultrafine bubble generating device,” Application No. 10-2024-0005434, Domestic, Republic of Korea, Application Date 2024.01.12.
Choi Young-do (Inventor 1), “Shaft sleeve for improving performance of multi-stage centrifugal pump and multi-stage centrifugal pump including the same,” Application, 10-2024-0004242, Domestic, Republic of Korea, Application Date 2024.01.10.
Choi Young-do (5 inventors), “Cross-flow water wheel device,” registered, Japanese Patent No. 7222473, Japan, registration date 2023.02.07.
Choi Young-do (Inventor 1), “Jet pump for improving suction performance,” Registration No. 10-2436034, Domestic, Republic of Korea, Registration Date 2022.08.19.
Choi Young-do (3 inventors), “Performance testing apparatus for Francis turbines,” Registration No. 10-1510599, Domestic, Republic of Korea, April 2, 2015.
Choi Young-do (3 inventors), “Method for manufacturing a runner for a high-performance cross-flow water turbine,” Registration No. 10-1418442, Domestic, Republic of Korea, Registration Date 2014.07.04.
Choi Young-do (Inventor 1), “Hydraulic machine equipped with an improved suction tube,” Registration No. 10-1406180, Domestic, Republic of Korea, Registration Date 2014.06.03.
Choi Young-do (Inventor 1), “Hydraulic machine equipped with an integrated casing system,” Registration No. 10-1389054, Domestic, Republic of Korea, Registration Date April 18, 2014.
Choi Young-do (4 inventors), “Cross-flow Waterwheel,” Registration No. 10-1387141, Domestic, Republic of Korea, Registration Date 2014.04.14.
Choi Young-do (5 inventors), “Ice box using solar cells and thermoelectric elements,” Application No. 10-2012-0017166, Domestic, Republic of Korea, Application Date 2012.02.20.
Choi Young-do (3 inventors), “Variable layout system for wind power plant,” Application No. 10-2011-0145358, Domestic, Republic of Korea, Application Date Dec. 29, 2011.
Choi Young-do (6 inventors), “Method for manufacturing a small horizontal-axis wind turbine through the development of a standard process,” Application No. 10-2011-0027092, Domestic, Republic of Korea, Application Date: March 25, 2011.