Granted Patent
Utility
US 4,393,886 · App. 06/286,811
Mixtures of quaternary, polymeric, high molecular weight ammonium salts, which are based on acrylic compounds, and surfactants, their preparation, and their use in cosmetics
Inventors:
Dieter Strasilla, Laszlo Moldovanyi, Charles Fearnley, Hubert Meindl
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Jul 27, 1981
Inventors
Dieter Strasilla
Laszlo Moldovanyi
Charles Fearnley
Hubert Meindl
Assignee (at issue)
Ciba-Geigy
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.