Granted Patent
Utility
US 6,621,946 · App. 09/962,046
Optical isolator
Inventors:
Tai-Cheng Yu, Chun-Yu Lee, Ja Ju Dy, Chien-Cheng Chen
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Sep 21, 2001
Inventors
Tai-Cheng Yu
Chun-Yu Lee
Ja Ju Dy
Chien-Cheng Chen
Assignee (at issue)
Hon Hai Precision Ind. Co., Ltd.
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.