Granted Patent
Utility
US 4,419,344 · App. 06/286,920
Quaternary, copolymeric, high molecular weight ammonium salts based on acrylic compounds, their preparation, and their use in cosmetics
Inventors:
Dieter Strasilla, Hubert Meindl, Laszlo Moldovanyi, Charles Fearnley
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Jul 27, 1981
Inventors
Dieter Strasilla
Hubert Meindl
Laszlo Moldovanyi
Charles Fearnley
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.