Granted Patent
Utility
US 5,872,261 · App. 08/933,266
Preparation of sulfo-N- hydroxy succinimide salts with intermediate formation of diester
Inventors:
Martin Lee Bremmer, Marty Wilkes
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Sep 18, 1997
Inventors
Martin Lee Bremmer
Marty Wilkes
Assignee (at issue)
Pierce 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.