Granted Patent
Utility
US 5,777,035 · App. 08/882,274
Process for purification of starting materials for metal catalyzed reactions and a purification reagent to be used therefor
Inventors:
Cornelis Martinus van Dijk, Paulus Alexander Maria Grotenhuis, Marc S. Sonderman
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Jun 25, 1997
Inventors
Cornelis Martinus van Dijk
Paulus Alexander Maria Grotenhuis
Marc S. Sonderman
Assignee (at issue)
SHELL OIL 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.