Granted Patent
Utility
US 4,448,871 · App. 06/295,657
Toner for developing an electrostatically charged image and manufacturing method thereof
Inventors:
Kiyoshi Tamaki, Hideki Murata, Sadatugu Terada, Tsuneo Wada, Akitoshi Matsubara, Hiroyuki Takagiwa
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Aug 24, 1981
Inventors
Kiyoshi Tamaki
Hideki Murata
Sadatugu Terada
Tsuneo Wada
Akitoshi Matsubara
Hiroyuki Takagiwa
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.