Granted Patent
Utility
US 4,469,893 · App. 06/360,533
Method for the preparation of nitrodiphenyl ethers
Inventors:
David Y. Tang, Byron R. Cotter, Frederick J. Goetz
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Mar 22, 1982
Inventors
David Y. Tang
Byron R. Cotter
Frederick J. Goetz
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.