Granted Patent
Utility
US 6,833,409 · App. 10/257,405
Impact modifier, process for producing the same, and thermoplastic resin composition containing the same
Inventors:
Keiji Nakamura, Masakazu Ito
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Oct 21, 2002
Inventors
Keiji Nakamura
Masakazu Ito
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.