Granted Patent
Utility
US 6,465,683 · App. 09/844,438
Process for making n-butyl esters from butadiene
Inventors:
Benjamin Patrick Gracey, Norbert Walter Josef Kamp
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Apr 30, 2001
Inventors
Benjamin Patrick Gracey
Norbert Walter Josef Kamp
Assignee (at issue)
BP Chemicals Limited
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.