Granted Patent
Utility
US 6,464,902 · App. 09/579,255
Perylene mixtures
Inventors:
Roger E. Gaynor, James M. Duff, C. Geoffrey Allen, Gordon K. Hamer, Ah-Mee Hor
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: May 25, 2000
Inventors
Roger E. Gaynor
James M. Duff
C. Geoffrey Allen
Gordon K. Hamer
Ah-Mee Hor
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.