Granted Patent
Utility
US 5,489,233 · App. 08/224,768
Polishing pads and methods for their use
Inventors:
Lee Melbourne Cook, John V. H. Roberts, Charles W. Jenkins, Raj Raghav Pillai
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Apr 8, 1994
Inventors
Lee Melbourne Cook
John V. H. Roberts
Charles W. Jenkins
Raj Raghav Pillai
Assignee (at issue)
Rodel Holdings, 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.