Granted Patent
Utility
US 5,312,933 · App. 07/655,456
Method of producing symmetrical difatty acid diamides
Inventors:
Rainer Frische, Jurgen Volkheimer, Klaus Wollmann, Herrmann Schomann, Judith Schneider, Alexander Ach, Renate Gross-Lannert, Bernd Best
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Feb 28, 1991
Inventors
Rainer Frische
Jurgen Volkheimer
Klaus Wollmann
Herrmann Schomann
Judith Schneider
Alexander Ach
Renate Gross-Lannert
Bernd Best
Assignee (at issue)
Battelle Institute e.V.
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.