Granted Patent
Utility
US 6,153,581 · App. 09/043,823
Drug for recovering renal function
Inventor:
Tsutomu Sanaka
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Mar 27, 1998
Inventor
Tsutomu Sanaka
Assignee (at issue)
Sumitomo Pharmaceuticals Company Limited
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.