Granted Patent
Utility
US 5,093,399 · App. 07/441,859
Process for preparing a free-flowing, modified polypropylene powder
Inventor:
Richard L. Brook
Patented Case
View Patent ↗
Granted: Mar 3, 1992
Filed: Dec 14, 1989
Inventor
Richard L. Brook
Assignee (at issue)
Morton International, 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.