Granted Patent
Utility
US 4,386,147 · App. 06/320,188
Toner for developing electrostatic latent images
Inventors:
Ryubun Seimiya, Yutaka Yamada, Makoto Tomono, Noriyoshi Tarumi, Yasuyuki Fujisaki, Minoru Takahashi, Hiroshi Ogawara, Hirozo Funaki
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Nov 12, 1981
Inventors
Ryubun Seimiya
Yutaka Yamada
Makoto Tomono
Noriyoshi Tarumi
Yasuyuki Fujisaki
Minoru Takahashi
Hiroshi Ogawara
Hirozo Funaki
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.