Granted Patent
Utility
US 4,743,439 · App. 06/571,325
Wet calcination of alkali metal bicarbonates in hydrophobic media
Inventor:
Douglas F. Ready
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Jan 16, 1984
Inventor
Douglas F. Ready
Assignee (at issue)
General Chemical Company
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.