Granted Patent
Utility
US 6,090,187 · App. 09/054,447
Apparatus and method for removing particulates in exhaust gas of an internal combustion engine collected by exhaust particulate remover apparatus
Inventor:
Yasuaki Kumagai
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Apr 3, 1998
Inventor
Yasuaki Kumagai
Assignee (at issue)
MITSUBISHI JIDOSHA 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.