Granted Patent
Utility
US 6,254,843 · App. 09/443,814
Process for the reclamation of calcium sulfite produced by a calcium-based FGD system
Inventors:
Gregory N. Brown, Michael L. Mengel
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Nov 19, 1999
Inventors
Gregory N. Brown
Michael L. Mengel
Assignee (at issue)
Marsulex Environmental Technologies 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.