Granted Patent
Utility
US 4,317,919 · App. 06/105,303
Recovery of bromine from effluent gases in the oxidation of substituted aromatics to form aromatic carboxylic acids
Inventors:
Peter J. Jones, David John Royall
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Dec 19, 1979
Inventors
Peter J. Jones
David John Royall
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.