Granted Patent
Utility
US 6,178,942 · App. 09/420,940
Piston configuration for reducing smoke and particulate emissions from direct injected engines
Inventors:
Carlo L. di Priolo, Andrew A. Pouring
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Oct 19, 1999
Inventors
Carlo L. di Priolo
Andrew A. Pouring
Assignee (at issue)
SONEX RESEARCH, INC
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.