Granted Patent
Utility
US 5,391,781 · App. 08/137,646
Methods for dispersing sulfur in aqueous systems
Inventors:
Quincy K. A. Sintim, Paul V. Roling
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Oct 15, 1993
Inventors
Quincy K. A. Sintim
Paul V. Roling
Assignee (at issue)
Betz Laboratories, Inc.
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.