Granted Patent
Utility
US 4,981,609 · App. 07/275,607
Compounds containing sulfur and amino groups
Inventors:
Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: Nov 25, 1988
Inventors
Neil E. S. Thompson
Derek Redmore
Bernardus A. Oude Alink
Benjamin T. Outlaw
Assignee (at issue)
Petrolite 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.