Granted Patent
Utility
US 5,389,483 · App. 08/074,158
Electrophotographic toner having two ethylene polymers
Inventors:
Shoji Kawasaki, Nobuhiro Hirayama, Kenji Uchiyama, Hisatomo Sato, Hiromi Akiyama
Patented Case
View Patent ↗
Granted: Feb 14, 1995
Filed: Jun 9, 1993
Inventors
Shoji Kawasaki
Nobuhiro Hirayama
Kenji Uchiyama
Hisatomo Sato
Hiromi Akiyama
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.