Granted Patent
Utility
US 6,664,321 · App. 09/782,218
Wear resistant resin composition
Inventors:
Kazuhiko Ayama, Hitoshi Inata, Koji Ohgi
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Feb 14, 2001
Inventors
Kazuhiko Ayama
Hitoshi Inata
Koji Ohgi
Assignee (at issue)
TOKUYAMA 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.