Granted Patent
Utility
US 6,717,331 · App. 10/403,051
Piezoelectric ultrasonic motor with multi-layer thin disks
Inventors:
Yung-Sung Lan, Ching-Hsing Huang, Chi-Lone Chang, Minsun Ouyang, Yu-Chien Huang, Hsiang-Chieh Yu, Chen-Yuan Huang, Tzuan-Ren Jeng, Jau-Jiu Ju
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Apr 1, 2003
Inventors
Yung-Sung Lan
Ching-Hsing Huang
Chi-Lone Chang
Minsun Ouyang
Yu-Chien Huang
Hsiang-Chieh Yu
Chen-Yuan Huang
Tzuan-Ren Jeng
Jau-Jiu Ju
Assignee (at issue)
Industrial Technology Research Institute
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.