Granted Patent
Utility
US 6,531,605 · App. 09/380,478
Process for the manufacture of arylsulfonyl chloride
Inventor:
Philip John Hogan
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Oct 25, 1999
Inventor
Philip John Hogan
Assignee (at issue)
Zeneca 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.