Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6257854 | Double screw rotor assembly having means to automatically adjust the clearance by pressure difference | Hong-Sheng Fang, Ming-Hsin Liu | 2001-07-10 |
| 6176694 | Double screw rotor assembly | Hong-Sheng Fang, Zhang-Hua Fong, Hann-Tsong Wang, Jiun-Hung Chen, Ming-Fong Chen | 2001-01-23 |
| 6155502 | Nozzle device for purging a vacuum pump | Ming-Shinn Liou, Tean-Mu Shen, Jung-Chen Chien, Tsung-Hsin Lin | 2000-12-05 |