Granted Patent
Utility
US 5,609,167 · App. 08/524,735
Acidic hair care preparations
Inventors:
Hermann Hensen, Dagmar Stuhrmann, Oriol Ponsati Obiols, Esther Prat Queralt
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Sep 7, 1995
Inventors
Hermann Hensen
Dagmar Stuhrmann
Oriol Ponsati Obiols
Esther Prat Queralt
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.