IP Library Granted Patent US 4,581,257
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,581,257
App. No.
06/619,148
Filed
1984-05-24
Granted
1986-04-08
Kind
A