Granted Patent
Utility
US 4,943,507 · App. 07/300,734
Toner for developing electrostatic latent image and method for developing electrostatic latent image with the same
Inventors:
Jiro Takahashi, Kenzi Tsuzita, Hiroyuki Takagiwa, Kunio Shigeta, Hiroya Masaki
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Jan 23, 1989
Inventors
Jiro Takahashi
Kenzi Tsuzita
Hiroyuki Takagiwa
Kunio Shigeta
Hiroya Masaki
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.