Granted Patent
Utility
US 6,540,652 · App. 09/189,551
Cushioning conversion machine and method
Inventors:
Richard O. Ratzel, Roger P. M. Rinkens, Michael J. Lencoski, Dirk Johannes Siekmann
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Nov 11, 1998
Inventors
Richard O. Ratzel
Roger P. M. Rinkens
Michael J. Lencoski
Dirk Johannes Siekmann
Assignee (at issue)
Ranpak Corp.
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.