IP Library Granted Patent US 4,897,430
Granted Patent Utility
US 4,897,430 · App. 07/265,081

One Component polyurea

Inventors: George P. Speranza, Wei-Yang Su
Patented Case View Patent ↗
Granted: Jan 30, 1990 Filed: Oct 31, 1988
Inventors
George P. Speranza
Wei-Yang Su
Assignee (at issue)
Texaco Chemical Inc.

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 4,897,430
App. No.
07/265,081
Filed
1988-10-31
Granted
1990-01-30
Kind
A