Granted Patent
Utility
US 4,424,172 · App. 06/279,660
5,5-Bis-(Bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes and process for preparing same
Inventor:
Yuval Halpern
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Jul 2, 1981
Inventor
Yuval Halpern
Assignee (at issue)
Borg-Warner Chemicals, 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.