Granted Patent
Utility
US 4,652,509 · App. 06/733,130
Toner for developing electrostatic latent image
Inventors:
Meizo Shirose, Jiro Takahashi, Hiroshi Tsuchiya, Tadashi Kaneko
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Mar 10, 1985
Inventors
Meizo Shirose
Jiro Takahashi
Hiroshi Tsuchiya
Tadashi Kaneko
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.