Granted Patent
Utility
US 6,583,213 · App. 09/674,270
Amine dispersants
Inventors:
David Melville Fawkes, Dean Thetford
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Oct 30, 2000
Inventors
David Melville Fawkes
Dean Thetford
Assignee (at issue)
Avecia 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.