Granted Patent
Utility
US 4,216,055 · App. 05/945,340
Electrostatic recording material and the method of preparing it
Inventors:
Noritoshi Watanabe, Riyozo Yamamoto, Isao Shoji, Hisanori Yagi
Patented Case
View Patent ↗
Granted: Aug 5, 1980
Filed: Sep 25, 1978
Inventors
Noritoshi Watanabe
Riyozo Yamamoto
Isao Shoji
Hisanori Yagi
Assignee (at issue)
Kanzaki Paper Manufacturing 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.