IP Library Granted Patent US 6,037,422
Granted Patent Utility
US 6,037,422 · App. 08/112,986

Polyarylene sulfide resin compositions

Inventors: Shinobu Yamao, Wataru Kosaka
Patented Case View Patent ↗
Granted: Mar 14, 2000 Filed: Aug 30, 1993
Inventors
Shinobu Yamao
Wataru Kosaka
Assignee (at issue)
Idemitsu Petrochemical 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 6,037,422
App. No.
08/112,986
Filed
1993-08-30
Granted
2000-03-14
Kind
A