Granted Patent
Utility
US 6,228,950 · App. 09/206,334
Polymer dispersants and methods of use in a nuclear steam generator
Inventors:
Phillip M. Egerbrecht, Joseph D. Bates, John A. Kelly, James D. Haff, Ralph L. Minnis
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Dec 8, 1998
Inventors
Phillip M. Egerbrecht
Joseph D. Bates
John A. Kelly
James D. Haff
Ralph L. Minnis
Assignees (at issue)
Commonwealth Edison Company
Betzdearborn, 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.