Granted Patent
Utility
US 6,436,883 · App. 09/827,526
Hydraulic and gear lubricants
Inventor:
Edward C. Y. Nieh
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Apr 6, 2001
Inventor
Edward C. Y. Nieh
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.