IP Library Granted Patent US 5,380,820
Granted Patent Utility
US 5,380,820 · App. 08/143,045

Polyimides, process for the preparation thereof and polyimide resin compositions

Inventors: Masahiro Ohta, Masao Yoshikawa
Patented Case View Patent ↗
Granted: Jan 10, 1995 Filed: Dec 7, 1993
Inventors
Masahiro Ohta
Masao Yoshikawa
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated

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 5,380,820
App. No.
08/143,045
Filed
1993-12-07
Granted
1995-01-10
Kind
A