Granted Patent
Utility
US 4,873,252 · App. 07/165,684
Acylated aminoalcohols for repelling insects and mites
Inventors:
Bernd-Wieland Kruger, Klaus Sasse, Franz-Peter Hoever, Gunther Nentwig, Wolfgang Berhrenz
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Mar 9, 1988
Inventors
Bernd-Wieland Kruger
Klaus Sasse
Franz-Peter Hoever
Gunther Nentwig
Wolfgang Berhrenz
Assignee (at issue)
Bayer Aktiengesellschaft
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.