Granted Patent
Utility
US 5,932,296 · App. 08/852,412
Process for producing a surface coated with amino groups
Inventors:
Peter Sluka, Dierk Beyer, Helmut Ringsdorf, Wolfgang Knoll
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: May 7, 1997
Inventors
Peter Sluka
Dierk Beyer
Helmut Ringsdorf
Wolfgang Knoll
Assignee (at issue)
Boehringer Mannheim GmbH
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.