IP Library › Granted Patent US 5,502,133
Granted Patent Utility
US 5,502,133 · App. 08/046,752

Syndiotactic styrene polymers

Inventors: Nobuhide Ishihara, Masahiko Kuramoto, Michitake Uoi
Patented Case View Patent ↗
Granted: Mar 26, 1996 Filed: Apr 15, 1993
Inventors
Nobuhide Ishihara
Masahiko Kuramoto
Michitake Uoi
Assignee (at issue)
IDEMITSU KOSAN 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 5,502,133
App. No.
08/046,752
Filed
1993-04-15
Granted
1996-03-26
Kind
A