Granted Patent
Utility
US 6,194,394 · App. 09/108,732
Coagulation controls for prothrombin time (PT) and activated partial thromboplastin time (APTT) assays
Inventor:
Pamela L. Hawkins
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Jul 1, 1998
Inventor
Pamela L. Hawkins
Assignee (at issue)
Sigma-Aldrich Co., LLC
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.