Granted Patent
Utility
US 4,925,988 · App. 07/233,028
Low foaming surfactant
Inventors:
Brigitte H. Licht, Roger T. Bentley, Frederick S. Schell
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Aug 17, 1988
Inventors
Brigitte H. Licht
Roger T. Bentley
Frederick S. Schell
Assignee (at issue)
Hart Chemical Limited
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.