Granted Patent
Utility
US 4,285,925 · App. 05/934,137
Process for the conversion of light ash to absorptive low bulk density alkali products
Inventor:
Rustom P. Poncha
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Aug 16, 1978
Inventor
Rustom P. Poncha
Assignee (at issue)
Allied 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.