Granted Patent
Utility
US 5,502,110 · App. 08/052,831
Resin composition for electrophotographic toner
Inventors:
Katsuru Matsumoto, Nobuhiro Hirayama, Kenji Uchiyama, Shoji Kawasaki, Tamami Fukui, Katsuo Uramoto
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Apr 27, 1993
Inventors
Katsuru Matsumoto
Nobuhiro Hirayama
Kenji Uchiyama
Shoji Kawasaki
Tamami Fukui
Katsuo Uramoto
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.