Granted Patent
Utility
US 6,320,055 · App. 09/559,046
Process for preparing hydantoins or cyclic anhydrides of an amino acid
Inventors:
Michael Slany, Michael Schulz, Martin Schäfer, Edgar Zeller, Klaus Ebel
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Apr 27, 2000
Inventors
Michael Slany
Michael Schulz
Martin Schäfer
Edgar Zeller
Klaus Ebel
Assignee (at issue)
BASF SE
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.