Granted Patent
Utility
US 6,133,474 · App. 09/393,475
Aromatic and aliphatic sulfonates and properties and applications thereof
Inventors:
Khalid Rasheed, John L. Gray, Jeffrey J. Fulton
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Sep 10, 1999
Inventors
Khalid Rasheed
John L. Gray
Jeffrey J. Fulton
Assignee (at issue)
Witco Corporation
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.