Granted Patent
Utility
US 6,782,867 · App. 10/052,631
Direct injection gasoline engine
Inventors:
Yoko Nakayama, Toshiharu Nogi, Takuya Shiraishi, Yusuke Kihara, Tohru Ishikawa
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Jan 23, 2002
Inventors
Yoko Nakayama
Toshiharu Nogi
Takuya Shiraishi
Yusuke Kihara
Tohru Ishikawa
Assignee (at issue)
HITACHI, LTD.
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.