Granted Patent
Utility
US 4,581,257 · App. 06/619,148
Method of producing cast coated paper
Inventors:
Hiromasa Kondo, Hitoshi Yamahira, Kazuo Kojima, Mikio Takahashi
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: May 24, 1984
Inventors
Hiromasa Kondo
Hitoshi Yamahira
Kazuo Kojima
Mikio Takahashi
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.