Granted Patent
Utility
US 4,770,969 · App. 07/071,604
Heat fusible toners for developing electrostatic images
Inventors:
Meizo Shirose, Jiro Takahashi, Kenichi Kishi, Kiyoshi Tamaki, Akitoshi Matsubara
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Jul 8, 1987
Inventors
Meizo Shirose
Jiro Takahashi
Kenichi Kishi
Kiyoshi Tamaki
Akitoshi Matsubara
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.