Granted Patent
Utility
US 6,166,134 · App. 09/317,009
Polypropylene resin composition with tapered triblock copolymer
Inventors:
Michael J. Modic, Norio Masuko
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: May 24, 1999
Inventors
Michael J. Modic
Norio Masuko
Assignee (at issue)
SHELL OIL 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.