Granted Patent
Utility
US 5,152,986 · App. 07/426,123
Preparation and use of ion exchange resins loaded with quinolonecarboxylic acid derivatives
Inventors:
Peter M. Lange, Alfred Mitschker, Arundev H. Naik, Hubert Rast, Martin Scheer, Herbert Voege
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Oct 24, 1989
Inventors
Peter M. Lange
Alfred Mitschker
Arundev H. Naik
Hubert Rast
Martin Scheer
Herbert Voege
Assignee (at issue)
Bayer 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.