Granted Patent
Utility
US 4,968,385 · App. 07/356,352
Method of preparing a plup using a fluidizing centrifugal pump during impregnation
Inventors:
Julio Amador, Eurico de Faria Amaro, Hans T. Haukerud, Ake Backlund
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: May 25, 1989
Inventors
Julio Amador
Eurico de Faria Amaro
Hans T. Haukerud
Ake Backlund
Assignee (at issue)
Kamyr AB
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.