Granted Patent
Utility
US 6,623,331 · App. 09/788,082
Polishing disk with end-point detection port
Inventors:
Roland Sevilla, James A. Hicks, Jeremy Jones
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Feb 16, 2001
Inventors
Roland Sevilla
James A. Hicks
Jeremy Jones
Assignee (at issue)
Cabot Microelectronics 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.