Granted Patent
Utility
US 6,162,268 · App. 09/303,920
Polishing slurry
Inventors:
James Kent Knapp, Doris Kwok
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: May 3, 1999
Inventors
James Kent Knapp
Doris Kwok
Assignee (at issue)
Praxair S.T. Technology, 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.