Granted Patent
Utility
US 6,200,722 · App. 09/450,606
Method of making an electrophotographic toner surface treated with metal oxide
Inventors:
Robert D. Fields, Satyanarayan A. Srinivaan
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Nov 30, 1999
Inventors
Robert D. Fields
Satyanarayan A. Srinivaan
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.