Granted Patent
Utility
US 5,612,305 · App. 08/372,049
Mixed surfactant systems for low foam applications
Inventor:
Ronald G. Lewis
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Jan 12, 1995
Inventor
Ronald G. Lewis
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.