Granted Patent
Utility
US 5,643,408 · App. 08/442,547
Apparatus for decontaminating a liquid surfactant of dioxane
Inventors:
Yesh P. Sachdeva, Richard L. Gabriel
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: May 16, 1995
Inventors
Yesh P. Sachdeva
Richard L. Gabriel
Assignee (at issue)
Pharm-Eco 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.