Granted Patent
Utility
US 6,491,971 · App. 09/827,540
Release coating system for crucibles
Inventors:
Michael Costantini, Mohan Chandra, Keith Matthei, Alleppey V. Hariharan
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Apr 6, 2001
Inventors
Michael Costantini
Mohan Chandra
Keith Matthei
Alleppey V. Hariharan
Assignee (at issue)
GT Equipment Technologies, 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.