Granted Patent
Utility
US 5,332,514 · App. 07/563,600
Continuous process for preparing overbased salts
Inventors:
Kenneth L. Kreuz, Tze-Chi Jao, Brian L. Papke, Edward R. Arndt
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Aug 6, 1990
Inventors
Kenneth L. Kreuz
Tze-Chi Jao
Brian L. Papke
Edward R. Arndt
Assignee (at issue)
Texaco Inc.
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.