Granted Patent
Utility
US 4,454,064 · App. 06/437,789
Process for preparing pentaerythritol phosphate
Inventors:
Yuval Halpern, Ron H. Niswander
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Oct 29, 1982
Inventors
Yuval Halpern
Ron H. Niswander
Assignee (at issue)
BorgWarner Inc.
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.