Granted Patent
Utility
US 5,370,958 · App. 08/010,871
Electrophotographic toner and production process thereof
Inventors:
Masaaki Shin, Kenji Uchiyama, Yasuo Okada
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Jan 29, 1993
Inventors
Masaaki Shin
Kenji Uchiyama
Yasuo Okada
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.