Granted Patent
Utility
US 6,255,347 · App. 08/879,870
Methods and compositions comprising R-ibuprofen
Inventors:
Qian Xiaotao, Stephen Don Hall
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Jun 20, 1997
Inventors
Qian Xiaotao
Stephen Don Hall
Assignee (at issue)
Advanced Research & Technology Institute
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.