Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11661955 | Fan engagement structure | — | 2023-05-30 |
| 8314266 | Method for manufacturing esters from acid and alcohol and system thereof | Cheng-Ching Yu, Ming-Jer Lee, Ruei-Chiang Tsai, Jian-Kai Cheng | 2012-11-20 |
| 7862783 | Separation process for methyl acetate hydrolysis and apparatus thereof | Cheng-Ching Yu, Ming-Jer Lee, Yu-De Lin, Jian-Kai Cheng | 2011-01-04 |
| 7399881 | Transesterification process of methyl acetate | Cheng-Ching Yu, Ming-Jer Lee, Jyun-Hong Chen, Jian-Kai Cheng | 2008-07-15 |
| 6440047 | Exercising device for simulating hula-hoop rotations | — | 2002-08-27 |