Granted Patent
Utility
US 6,576,709 · App. 09/778,442
Polypropylene impact copolymer having bimodal sized rubber particles
Inventor:
Sehyun Kim
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Feb 7, 2001
Inventor
Sehyun Kim
Assignee (at issue)
Sunoco, Inc. (R&M)
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.