Granted Patent
Utility
US 6,221,815 · App. 09/327,686
Diesel fuel and lubricating oil antiforms and methods of use
Inventors:
Wojciech Grabowski, Rolf Haubrichs
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Jun 8, 1999
Inventors
Wojciech Grabowski
Rolf Haubrichs
Assignee (at issue)
Crompton 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.