Granted Patent
Utility
US 4,968,322 · App. 07/334,457
Fuel composition and fuel additive
Inventors:
Shintaro Miyawaki, Kiyomi Ishii, Mamoru Yamane
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Apr 7, 1989
Inventors
Shintaro Miyawaki
Kiyomi Ishii
Mamoru Yamane
Assignee (at issue)
Nippon Mining Company Limited
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.