Granted Patent
Utility
US 5,281,568 · App. 07/822,279
Process for the production of a chromium-containing fluorination catalyst
Inventors:
John David Scott, Michael John Watson
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Jan 21, 1992
Inventors
John David Scott
Michael John Watson
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.