Granted Patent
Utility
US 5,228,900 · App. 07/799,680
Agglomeration of particulate materials with reticulated cellulose
Inventors:
R. Scott Stephens, John A. Westland, Douglas R. Shaw
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Nov 21, 1991
Inventors
R. Scott Stephens
John A. Westland
Douglas R. Shaw
Assignee (at issue)
Weyerhaeuser NR Company
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.