Granted Patent
Utility
US 6,538,151 · App. 09/181,671
Modifications of 2-amino-4-(4-fluorobenzylamino)-1-ethoxycarbonylaminobenzene, and processes for their preparation
Inventors:
Peter Meisel, Karl-Friedrich Landgraf, Jürgen Schäfer, Wilfried Thiel, Matthias Rischer, Alfred Olbrich, Bernhard Kutscher
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Oct 29, 1998
Inventors
Peter Meisel
Karl-Friedrich Landgraf
Jürgen Schäfer
Wilfried Thiel
Matthias Rischer
Alfred Olbrich
Bernhard Kutscher
Assignee (at issue)
Asta Medica 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.