Granted Patent
Utility
US 6,010,672 · App. 09/061,363
Process for producing sodium carbonate from trona ore
Inventor:
Allan L. Turner
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Apr 15, 1998
Inventor
Allan L. Turner
Assignee (at issue)
Environmental Projects, 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.