Granted Patent
Utility
US 6,454,821 · App. 09/598,161
Polishing composition and method
Inventors:
Faraz Abbasi, Phil O, James Kent Knapp, Lei Liu
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jun 21, 2000
Inventors
Faraz Abbasi
Phil O
James Kent Knapp
Lei Liu
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.