Granted Patent
Utility
US 5,968,460 · App. 08/623,071
Process for injecting particulate material into a fluidized bed reactor
Inventors:
Donald H. Eastham, Ted M. Knowlton, Melvyn B. Pell, James W. Reeves
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Mar 28, 1996
Inventors
Donald H. Eastham
Ted M. Knowlton
Melvyn B. Pell
James W. Reeves
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.