Granted Patent
Utility
US 4,310,483 · App. 06/063,233
Thermal tumbling granulation
Inventors:
Werner H. Dorfel, Bernhard Medinger, Eduard Troxler
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Aug 3, 1979
Inventors
Werner H. Dorfel
Bernhard Medinger
Eduard Troxler
Assignee (at issue)
Ciba-Geigy
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.