Granted Patent
Utility
US 5,009,745 · App. 07/596,807
Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans from secondary fibers using supercritical CO.sub.2 extraction
Inventors:
Shafi U. Hossain, Carol Ann Blaney
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Oct 12, 1990
Inventors
Shafi U. Hossain
Carol Ann Blaney
Assignee (at issue)
Kimberly-Clark 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.