Granted Patent
Utility
US 4,367,171 · App. 06/049,966
Coating compositions for the manufacture of coated papers
Inventors:
Klaus-Dieter Leifels, Alfred Renner, Franz R. Widmer
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Jun 19, 1979
Inventors
Klaus-Dieter Leifels
Alfred Renner
Franz R. Widmer
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.