Granted Patent
Utility
US 6,657,097 · App. 09/520,332
Fluidized bed reactor
Inventors:
Itaru Sawaki, Kazuhiro Shimizu
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Mar 7, 2000
Inventors
Itaru Sawaki
Kazuhiro Shimizu
Assignee (at issue)
MITSUBISHI CHEMICAL 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.