Granted Patent
Utility
US 6,680,794 · App. 10/264,318
Polarization beam splitter for photolithography
Inventors:
James McClay, Ronald A. Wilklow, Matthew Gregoire
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Oct 4, 2002
Inventors
James McClay
Ronald A. Wilklow
Matthew Gregoire
Assignee (at issue)
ASML Holding N.V.
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.