Granted Patent
Utility
US 5,989,447 · App. 08/976,555
Magnetorheological liquids, a process for producing them and their use, and a process for producing magnetizable particles coated with an organic polymer
Inventors:
Wolfgang Podszun, Olaf Halle, Johan Kijlstra, Robert Bloodworth, Eckhard Wendt
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Nov 24, 1997
Inventors
Wolfgang Podszun
Olaf Halle
Johan Kijlstra
Robert Bloodworth
Eckhard Wendt
Assignee (at issue)
GE Bayer Silicones GmbH & Co. KG
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.