Granted Patent
Utility
US 4,382,007 · App. 06/391,089
Novel dispersant-VI improvers and lubricating oil containing same
Inventors:
Harry Chafetz, Richard F. Love, James O. Waldbillig
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Jun 23, 1982
Inventors
Harry Chafetz
Richard F. Love
James O. Waldbillig
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.