Granted Patent
Utility
US 4,593,057 · App. 06/765,679
Hindered phenolic compounds derived from hexitans and stabilized compositions
Inventors:
John F. Stephen, Jerry H. Smith
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Aug 15, 1985
Inventors
John F. Stephen
Jerry H. Smith
Assignee (at issue)
ICI Americas, 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.