Granted Patent
Utility
US 5,763,371 · App. 08/733,541
Ethylene compressor lubricant containing phospate ester of a monoglyceride or diglyceride
Inventors:
Anna Debska-Chwaja, Albert Benson, Paul G. Tietze
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Oct 18, 1996
Inventors
Anna Debska-Chwaja
Albert Benson
Paul G. Tietze
Assignee (at issue)
Witco 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.