Granted Patent
Utility
US 4,876,358 · App. 07/125,086
Oxyethylene bismaleimide derivatives
Inventor:
David C. Alexander
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Nov 25, 1987
Inventor
David C. Alexander
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.