Inventor
TSAI CHENG-CHAN
TW3 patents
Patents
3 patentsUS6257854B1Jul 10, 2001
Double screw rotor assembly having means to automatically adjust the clearance by pressure difference
IND TECH RES INST19 citations80
US6176694B1Jan 23, 2001
Double screw rotor assembly
IND TECH RES INST10 citations69
US6155502ADec 5, 2000
Nozzle device for purging a vacuum pump
IND TECH RES INST5 citations58