Granted Patent
Utility
US 5,312,889 · App. 07/687,933
Hydroxyfatty-acid-based monomers for producing plastics
Inventors:
Rainer Frische, Juergen Volkheimer
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Jun 5, 1991
Inventors
Rainer Frische
Juergen Volkheimer
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.