Granted Patent
Utility
US 5,378,367 · App. 07/981,601
Method for removing color-imparting contaminants from pulp and paper waste streams using a combination of adsorbents
Inventors:
Gary A. O'Neill, George M. Goyak
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Nov 25, 1992
Inventors
Gary A. O'Neill
George M. Goyak
Assignee (at issue)
Aluminum Company of America
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.