Granted Patent
Utility
US 5,401,313 · App. 08/016,819
Surface modified particles and method of making the same
Inventors:
William W. Supplee, James Will
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Feb 10, 1993
Inventors
William W. Supplee
James Will
Assignee (at issue)
Harcros Pigments, 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.