Granted Patent
Utility
US 6,733,898 · App. 10/228,487
Resin compositions for producing biaxially oriented polypropylene films
Inventors:
Sehyun Kim, Michael Stephans
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Aug 27, 2002
Inventors
Sehyun Kim
Michael Stephans
Assignee (at issue)
Sunoco, 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.