Granted Patent
Utility
US 5,151,457 · App. 07/796,918
Resin compositions having improved antistatic properties
Inventors:
Yuzuru Ishida, Haruo Inoue, Ichiro Otsuka, Masato Takaku, Masahiro Mitsuboshi, Keiji Iio, Atsushi Hashimoto
Patented Case
View Patent ↗
Granted: Sep 29, 1992
Filed: Oct 22, 1991
Inventors
Yuzuru Ishida
Haruo Inoue
Ichiro Otsuka
Masato Takaku
Masahiro Mitsuboshi
Keiji Iio
Atsushi Hashimoto
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.