Granted Patent
Utility
US 5,100,592 · App. 07/631,249
Method and apparatus for granulation and granulated product
Inventors:
Robert E. Sparks, Norbert S. Mason, Michael Center
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Dec 20, 1990
Inventors
Robert E. Sparks
Norbert S. Mason
Michael Center
Assignee (at issue)
Washington University Technology Associated, 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.