Granted Patent
Utility
US 5,113,025 · App. 07/664,637
Selective reducing agents
Inventors:
Won S. Park, Everett M. Marlett
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Mar 5, 1991
Inventors
Won S. Park
Everett M. Marlett
Assignee (at issue)
Ethyl 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.