Granted Patent
Utility
US 5,343,702 · App. 07/798,751
Zeolite converter for diesel engine
Inventors:
Kiyoshi Miyajima, Hiroshi Oikawa, Yoichiro Kono, Yasuaki Kumagai, Shinji Nakayama, Hiroshi Nakagawa, Masayoshi Nakashima
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Nov 27, 1991
Inventors
Kiyoshi Miyajima
Hiroshi Oikawa
Yoichiro Kono
Yasuaki Kumagai
Shinji Nakayama
Hiroshi Nakagawa
Masayoshi Nakashima
Assignees (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
MITSUBISHI KOGYO KABUSHIKI KAISHA
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.