Granted Patent
Utility
US 6,232,485 · App. 09/341,010
Production of phosphate esters
Inventors:
Tracy Anne Derbyshire, Hazel May Farrow, Jonathan S. Hill
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Nov 26, 1999
Inventors
Tracy Anne Derbyshire
Hazel May Farrow
Jonathan S. Hill
Assignee (at issue)
Great Lakes Chemical Corp.
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.