Granted Patent
Utility
US 4,491,644 · App. 06/497,355
Flame-retardant polymer compositions
Inventors:
Yuval Halpern, Donna M. Mott
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: May 23, 1983
Inventors
Yuval Halpern
Donna M. Mott
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.