Granted Patent
Utility
US 6,043,384 · App. 09/272,347
Preparation of quinoneimines from hydroxyphenylamines using hydrogen peroxide and a catalyst
Inventors:
Donald L. Fields, Jr., Raymond Anton Lohr, Jr., Jayant S. Lodaya
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Mar 19, 1999
Inventors
Donald L. Fields, Jr.
Raymond Anton Lohr, Jr.
Jayant S. Lodaya
Assignee (at issue)
Flexsys America L.P.
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.