Granted Patent
Utility
US 5,885,422 · App. 08/807,873
Spent caustic (pre)treatment process
Inventors:
Sabah A. Kurukchi, Joseph M. Gondolfe
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Feb 26, 1997
Inventors
Sabah A. Kurukchi
Joseph M. Gondolfe
Assignee (at issue)
Stone & Webster Engineering Corp.
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.