Granted Patent
Utility
US 5,885,147 · App. 08/854,862
Apparatus for conditioning polishing pads
Inventors:
Douglas Kreager, Junedong Lee
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: May 12, 1997
Inventors
Douglas Kreager
Junedong Lee
Assignee (at issue)
Integrated Process Equipment Corporation
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.