Granted Patent
Utility
US 4,759,921 · App. 07/103,215
Method of preparing hydrogen peroxide
Inventors:
Wolfgang Kunkel, Gustaaf Goor, Jorg Kemnade
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Oct 1, 1987
Inventors
Wolfgang Kunkel
Gustaaf Goor
Jorg Kemnade
Assignee (at issue)
Degussa AG
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.