Granted Patent
Utility
US 5,429,098 · App. 08/193,753
Method and apparatus for controlling the treatment of fuel vapor of an internal combustion engine
Inventor:
Naoki Tomisawa
Patented Case
View Patent ↗
Granted: Jul 4, 1995
Filed: Feb 3, 1994
Inventor
Naoki Tomisawa
Assignee (at issue)
Unisia Jecs 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.