Granted Patent
Utility
US 5,831,131 · App. 08/703,232
Process for preparing peroxides
Inventors:
Carl G. Krespan, Robert Clayton Wheland
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Aug 26, 1996
Inventors
Carl G. Krespan
Robert Clayton Wheland
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.