Granted Patent
Utility
US 4,795,689 · App. 07/088,053
Electrostatic image developing toner for use in heat-roller fixing
Inventors:
Akitoshi Matsubara, Satoru Ikeuchi, Kunio Akimoto, Yoshio Takizawa
Patented Case
View Patent ↗
Granted: Jan 3, 1989
Filed: Aug 21, 1987
Inventors
Akitoshi Matsubara
Satoru Ikeuchi
Kunio Akimoto
Yoshio Takizawa
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.