Granted Patent
Utility
US 4,690,785 · App. 06/882,290
Low water neutralization to produce a highly active alkaryl sulfonate
Inventors:
Marvin Mausner, Siegfried Meinstein
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Jul 7, 1986
Inventors
Marvin Mausner
Siegfried Meinstein
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.