Granted Patent
Utility
US 6,019,664 · App. 09/281,944
Height gauge device for wafer
Inventors:
Pei Wei Tsai, Hua-Jen Tseng, Chun-Chieh Lee, Dong-Tay Tsai
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Mar 31, 1999
Inventors
Pei Wei Tsai
Hua-Jen Tseng
Chun-Chieh Lee
Dong-Tay Tsai
Assignee (at issue)
MOSEL VITELIC INC.
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.