Granted Patent
Utility
US 6,576,438 · App. 09/859,819
Method of determining thiopurine methyltransferase activity
Inventor:
Paul A. Barstad
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: May 16, 2001
Inventor
Paul A. Barstad
Assignee (at issue)
PROMETHEUS LABORATORIES 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.