Granted Patent
Utility
US 6,107,259 · App. 09/115,792
Oil soluble calcite overbased detergents and engine oils containing same
Inventors:
Ronald J. Muir, Theo I. Eliades, Ken Niece, Wayne MacKwood
Patented Case
View Patent ↗
Granted: Aug 22, 2000
Filed: Jul 15, 1998
Inventors
Ronald J. Muir
Theo I. Eliades
Ken Niece
Wayne MacKwood
Assignee (at issue)
Witco 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.