Granted Patent
Utility
US 5,691,284 · App. 08/773,032
Synthetic oligomeric oils
Inventors:
Claudia Beyer, Ruediger Jelitte, Horst Pennewiss, Heinz Jost
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Dec 24, 1996
Inventors
Claudia Beyer
Ruediger Jelitte
Horst Pennewiss
Heinz Jost
Assignee (at issue)
ROHM CO., LTD.
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.