Granted Patent
Utility
US 4,533,930 · App. 06/410,811
Recording materials
Inventors:
Shunshuke Shioi, Yasuo Takekawa, Makoto Miyake
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Aug 23, 1982
Inventors
Shunshuke Shioi
Yasuo Takekawa
Makoto Miyake
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.