Granted Patent
Utility
US 6,690,025 · App. 09/902,960
Devices for etch loading planar lightwave circuits
Inventors:
Jongik Won, Calvin Ho, Fan Zhong, Liang Zhao
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Jul 10, 2001
Inventors
Jongik Won
Calvin Ho
Fan Zhong
Liang Zhao
Assignee (at issue)
LIGHTWAVE MICROSYSTEMS, 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.