Granted Patent
Utility
US 5,200,421 · App. 07/867,955
Microbicidal active compound combinations
Inventors:
Georg-Wilhelm Ludwig, Otto Exner, Wilfried Paulus, Karl H. Buchel, Graham Holmwood
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Apr 13, 1992
Inventors
Georg-Wilhelm Ludwig
Otto Exner
Wilfried Paulus
Karl H. Buchel
Graham Holmwood
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.