Granted Patent
Utility
US 5,674,462 · App. 08/279,783
Method for the removal of non-metal and metalloid hydrides
Inventors:
Richard A. Hayden, Thomas M. Matviya
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Jul 25, 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.