Granted Patent
Utility
US 5,008,035 · App. 07/521,954
Fluidization of heavy slurries
Inventor:
Henry T. Broom
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: May 11, 1990
Inventor
Henry T. Broom
Assignee (at issue)
Nalco Chemical 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.