Granted Patent
Utility
US 5,062,948 · App. 07/486,607
Mercury removal from liquid hydrocarbon compound
Inventors:
Tetsu Kawazoe, Tsukasa Iida
Patented Case
View Patent ↗
Granted: Nov 5, 1991
Filed: Feb 28, 1990
Inventors
Tetsu Kawazoe
Tsukasa Iida
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.