Granted Patent
Utility
US 5,189,088 · App. 07/860,795
Bis(phenolic-amine)quinone compounds and polyolefin compositions stabilized therewith
Inventors:
Richard H. S. Wang, Ping Shang, Daniel A. Jervis
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Mar 30, 1992
Inventors
Richard H. S. Wang
Ping Shang
Daniel A. Jervis
Assignee (at issue)
EASTMAN KODAK COMPANY
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.