Granted Patent
Utility
US 4,415,644 · App. 06/296,067
Electrostatic image developing toner and a method for the production thereof
Inventors:
Kiyoshi Tamaki, Hideki Murata, Sadatugu Terada, Tsuneo Wada, Akitoshi Matsubara, Hiroyuki Takagiwa
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Aug 25, 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.