Inventor
LI YAO-TZU
US10 patents
⚠️ This page may combine multiple inventors who share the name “LI YAO-TZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YT LI ENGINEERING INC
7 patentsUS5971061AOct 26, 1999
Edge-hanging orbital rod support and drive for vertical tube-type heat exchanger
YT LI ENGINEERING INC21 citations91
US5385645AJan 31, 1995
Heat transfer apparatus with positive drive orbital whip rod
YT LI ENGINEERING INC20 citations91
US5363660ANov 15, 1994
Orbital type freezing apparatus and method
YT LI ENGINEERING INC31 citations89
US5221439AJun 22, 1993
Orbital tube evaporator with improved heat transfer
YT LI ENGINEERING INC32 citations89
US5953924ASep 21, 1999
Apparatus, process and system for tube and whip rod heat exchanger
YT LI ENGINEERING INC39 citations87
US5768894AJun 23, 1998
Apparatus, process and system for tube and whip rod heat exchanger
YT LI ENGINEERING INC20 citations87
US5013446AMay 7, 1991
Chromatographic gel contactor and process
YT LI ENGINEERING INC15 citations65