Granted Patent
Utility
US 6,239,083 · App. 09/586,011
Clarification method for oil dispersions comprising overbased detergents containing calcite
Inventor:
Ronald J. Muir
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Jun 2, 2000
Inventor
Ronald J. Muir
Assignee (at issue)
Crompton Corporation
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.