Granted Patent
Utility
US 4,696,774 · App. 06/843,408
Decolorizing arylsulfonyl halides
Inventor:
Jeffrey E. Telschow
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Mar 24, 1986
Inventor
Jeffrey E. Telschow
Assignee (at issue)
Stauffer Chemical Company
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.