Granted Patent
Utility
US 6,409,982 · App. 09/764,920
Process for production of potassium carbonate sesquihydrate
Inventors:
William J. Zuccarello, Elliot Block, Joseph A. Paluzzi, Kenneth R. Cummings
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Jan 18, 2001
Inventors
William J. Zuccarello
Elliot Block
Joseph A. Paluzzi
Kenneth R. Cummings
Assignee (at issue)
Church & Dwight Co., Inc.
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.