Granted Patent
Utility
US 4,798,682 · App. 06/872,306
Oil-in-water emulsions with increased viscosity under shear stress
Inventor:
Achim Ansmann
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Jun 6, 1986
Inventor
Achim Ansmann
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.