Granted Patent
Utility
US 6,667,021 · App. 09/950,875
Method for producing enhanced sodium carbonate crystals for making sodium bicarbonate
Inventors:
Victor Braman, Marco Cortes, Stephen Gaddis, Kenneth Douglas Boyle
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Sep 12, 2001
Inventors
Victor Braman
Marco Cortes
Stephen Gaddis
Kenneth Douglas Boyle
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.