Granted Patent
Utility
US 5,770,549 · App. 08/617,449
Surfactant blend for non-solvent hard surface cleaning
Inventor:
Stephen F. Gross
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Mar 18, 1996
Inventor
Stephen F. Gross
Assignee (at issue)
Henkel 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.