Granted Patent
Utility
US 6,703,355 · App. 09/922,088
Method for lubricating high pressure hydraulic system using phosphate ester hydraulic fluid
Inventors:
Shlomo Antika, Marc-Andre Poirier, Jean-Michel Pascual, Gerard Dallemagne
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Aug 3, 2001
Inventors
Shlomo Antika
Marc-Andre Poirier
Jean-Michel Pascual
Gerard Dallemagne
Assignee (at issue)
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
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.