Granted Patent
Utility
US 5,705,396 · App. 08/516,198
Additive for diagnostic tests for determination of the coagulability of blood, method of reducing the influencing of diagnostic tests by heparin and the use of metal salts for these purposes
Inventors:
Karl Fickenscher, Norbert Zander
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Aug 17, 1995
Inventors
Karl Fickenscher
Norbert Zander
Assignee (at issue)
Behringwerke Diagnostics 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.