Granted Patent
Utility
US 5,427,883 · App. 08/343,995
Toner composition for electrophotography
Inventors:
Akira Misawa, Kazuo Hisamatsu, Keiichi Ishikawa, Kazuo Hagiwara, Masaaki Shin
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Nov 18, 1994
Inventors
Akira Misawa
Kazuo Hisamatsu
Keiichi Ishikawa
Kazuo Hagiwara
Masaaki Shin
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.