Granted Patent
Utility
US 4,252,979 · App. 06/006,741
Terephthalic acid derivatives
Inventor:
Albert M. V. Jacques
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Jan 26, 1979
Inventor
Albert M. V. Jacques
Assignee (at issue)
Amchem Products, 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.