Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10794308 | Apparatus and method for controlling deactivation of cylinders in engine | Ki Seon Sim, Gee Wook Shin, Myung-Sik Choi, Won Gyu Kim, Kyoung Seok Park | 2020-10-06 |
| 10344630 | Variable valve control system having common valve and engine system having the same | Myung-Sik Choi | 2019-07-09 |
| 10273837 | System for controlling variable valve apparatus and oil control valve for the same | Myung-Sik Choi | 2019-04-30 |
| 9874121 | Variable valve lift apparatus | Myungsik Choi | 2018-01-23 |
| 9816409 | Variable valve lift apparatus | Myungsik Choi, Gee Wook Shin, Won Gyu Kim, Gyu Han Hwang, Yoonsik Woo | 2017-11-14 |
| 9689282 | Variable valve lift apparatus | Myungsik Choi, Won Gyu Kim, Gee Wook Shin | 2017-06-27 |
| 9670848 | Variable compression ratio engine | Myungsik Choi | 2017-06-06 |
| 9587531 | Variable valve lift apparatus | Myungsik Choi, Won Gyu Kim | 2017-03-07 |
| 9556763 | Variable valve lift apparatus | Won Gyu Kim, Gyu Han Hwang, Jin Hwa Kim, Gee Wook Shin, Myungsik Choi +1 more | 2017-01-31 |
| 9447739 | Variable compression ratio engine | Won Gyu Kim, Eun Ho Lee, Myungsik Choi, Yoonsik Woo | 2016-09-20 |
| 9399932 | Variable valve device that varies lift amount of valve | Gyu Han Hwang, Jin Kook Kong, Gee Wook Shin, Won Gyu Kim, Myungsik Choi | 2016-07-26 |
| 9267402 | Multistage variable valve lift apparatus, system and engine | Soo Hyung Woo, Jong Hyeok Choi, Byong Young Choi, Jin Kook Kong, Gee Wook Shin | 2016-02-23 |
| 9140147 | Multiple variable valve lift apparatus | Soo Hyung Woo, Jei Choon Yang, Byong Young Choi, Jin Kook Kong, Gee Wook Shin | 2015-09-22 |
| 9115652 | Oil control valve and variable valve lift system provided with the same | Byong Young Choi, Gee Wook Shin, Jin Kook Kong, Soo Hyung Woo, Chang-Hoon Lee | 2015-08-25 |
| 9074499 | Multiple variable valve lift apparatus and engine provided with the same | Soo Hyung Woo, Chang Ho Yang, Byong Young Choi, Jin Kook Kong, Gee Wook Shin | 2015-07-07 |
| 8910601 | Cylinder air volume difference adjuster and continuous variable valve lifter including the same | Byong Young Choi, Jin Kook Kong, Soo Hyung Woo, Gee Wook Shin | 2014-12-16 |
| 8899195 | Electro-hydraulic variable valve lift apparatus | Soo Hyung Woo, Byong Young Choi, Jin Kook Kong, Wonjun Lee | 2014-12-02 |
| 8726861 | Variable valve lift apparatus | Byong Young Choi, Jin Kook Kong, Soo Hyung Woo, Gee Wook Shin, Jei Choon Yang +1 more | 2014-05-20 |
| 8607751 | Electro-hydraulic variable valve lift system | Jei Choon Yang, Byong Young Choi, Wonjun Lee, Jin Kook Kong, Soo Hyung Woo | 2013-12-17 |
| 8573168 | Hydraulic pressure valve apparatus | Jei Choon Yang, Chang Ho Yang, Byong Young Choi, Jin Kook Kong, Soo Hyung Woo | 2013-11-05 |
| 8499725 | Variable compression ratio apparatus | Dong-Seok Lee, Jei Choon Yang, Yen Wha Ryu, Eun Ho Lee, Jin Kook Kong +1 more | 2013-08-06 |
| 8464677 | Variable valve lift apparatus | Byong Young Choi, Gee Wook Shin, Yoonsik Woo, Jin Kook Kong, Soo Hyung Woo | 2013-06-18 |
| 8312852 | Variable tappet | Jei Choon Yang, Gee Wook Shin, Sang Won Kim, Jin Kook Kong, Soo Hyung Woo +2 more | 2012-11-20 |
| 8291874 | Apparatus for adjusting deviation of engine and continuously variable valve lift device including the same | Jei Choon Yang, Ki Uk Shin, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim +1 more | 2012-10-23 |
| 8291875 | Continuously variable valve lift device for vehicle | Jei Choon Yang, Byong Young Choi, Ki Young Kwon, Jin Kook Kong, Soo Hyung Woo +1 more | 2012-10-23 |