Granted Patent
Utility
US 4,952,695 · App. 06/756,469
Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid, intermediate for antibacterials
Inventors:
Klaus Groche, Uwe Petersen, Hans-Joachim Zeiler, Karl G. Metzger
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jul 18, 1985
Inventors
Klaus Groche
Uwe Petersen
Hans-Joachim Zeiler
Karl G. Metzger
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.