Granted Patent
Utility
US 6,503,460 · App. 09/271,417
Staged catalyst regeneration in a baffled fluidized bed
Inventors:
Richard Miller, Yong-Lin Yang
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Mar 17, 1999
Inventors
Richard Miller
Yong-Lin Yang
Assignee (at issue)
Kellogg Brown & Root LLC
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.