Granted Patent
Utility
US 6,468,595 · App. 09/783,926
Vaccum deposition of cationic polymer systems
Inventors:
Michael G. Mikhael, Angelo Yializis
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Feb 13, 2001
Inventors
Michael G. Mikhael
Angelo Yializis
Assignee (at issue)
Sigma Technologies International, 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.