Granted Patent
Utility
US 6,469,780 · App. 09/217,113
Apparatus and method for detecting particles in reactive and toxic gases
Inventors:
Wayne Thomas McDermott, Richard Carl Ockovic
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Dec 21, 1998
Inventors
Wayne Thomas McDermott
Richard Carl Ockovic
Assignee (at issue)
Air Products and Chemicals, 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.