Granted Patent
Utility
US 5,301,621 · App. 08/062,790
Slag viscosity detection through image analysis of dripping slag within rotary incineration kilns
Inventors:
Eustathios Vassiliou, Joseph F. Giunto, Walter R. Schaefer, Bruno R. Kuhn
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: May 17, 1993
Inventors
Eustathios Vassiliou
Joseph F. Giunto
Walter R. Schaefer
Bruno R. Kuhn
Assignee (at issue)
Rollins Environmental Services, 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.