Granted Patent
Utility
US 6,472,523 · App. 10/072,241
Phthalocyanine compositions
Inventors:
Jeffrey H. Banning, Nan-Xing Hu, James D. Mayo, James M. Duff, Roger E. Gaynor, Rosa M. Duque, Nam S. Ro
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Feb 8, 2002
Inventors
Jeffrey H. Banning
Nan-Xing Hu
James D. Mayo
James M. Duff
Roger E. Gaynor
Rosa M. Duque
Nam S. Ro
Assignee (at issue)
Xerox Corporation
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.