Granted Patent
Utility
US 5,470,748 · App. 08/266,137
Method for measuring the relative catalytic activity of carbonaceous chars
Inventors:
Richard A. Hayden, Thomas M. Matviya
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Jun 27, 1994
Inventors
Richard A. Hayden
Thomas M. Matviya
Assignee (at issue)
CALGON CARBON 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.