Granted Patent
Utility
US 5,895,821 · App. 08/940,718
Process for the calcination/activation of V/P/O catalyst
Inventors:
Rashmikant Maganlal Contractor, Harold S. Horowitz, Gregory Patience, John Donal Sullivan
Patented Case
View Patent ↗
Granted: Apr 20, 1999
Filed: Sep 30, 1997
Inventors
Rashmikant Maganlal Contractor
Harold S. Horowitz
Gregory Patience
John Donal Sullivan
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.