Granted Patent
Utility
US 5,270,451 · App. 07/926,134
Extraction method for preparing thromboplastin reagents
Inventors:
Pamela L. Hawkins, James R. Maynard
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: Aug 6, 1992
Inventors
Pamela L. Hawkins
James R. Maynard
Assignee (at issue)
Baxter Diagnostics Inc.
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.