Granted Patent
Utility
US 4,563,421 · App. 06/555,435
Method for determining the presence of endohydrolase in a liquid and composition therefor
Inventors:
Klaus Habenstein, Helmut Kohl
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Nov 25, 1983
Inventors
Klaus Habenstein
Helmut Kohl
Assignee (at issue)
Hoechst 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.