Granted Patent
Utility
US 5,652,238 · App. 08/640,899
Esters of substituted-hydroxyacetyl piperazine phenyl oxazolidinones
Inventors:
Steven J. Brickner, Michael R. Barbachyn, Douglas K. Hutchinson
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: May 9, 1996
Inventors
Steven J. Brickner
Michael R. Barbachyn
Douglas K. Hutchinson
Assignee (at issue)
Pharmacia & Upjohn Company 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.