Granted Patent
Utility
US 6,633,625 · App. 09/833,659
Density profiler for measuring density profile of a medium and method and apparatus using same
Inventors:
Peter Jackson, Robert Simon Knapp
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Apr 13, 2001
Inventors
Peter Jackson
Robert Simon Knapp
Assignee (at issue)
Johnson Matthey PLC
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.