Granted Patent
Utility
US 4,377,712 · App. 06/237,194
Preparation of meta-substituted diaryl ethers
Inventors:
Arthur M. Foster, James J. Maul
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Feb 23, 1981
Inventors
Arthur M. Foster
James J. Maul
Assignee (at issue)
Occidental Chemical Corporation
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.