IP Library › Granted Patent US 4,870,191
Granted Patent Utility
US 4,870,191 · App. 07/223,010

Silicon containing reaction product

Inventors: Karl E. Wiegand, Patrick C. Hu
Patented Case View Patent ↗
Granted: Sep 26, 1989 Filed: Jul 22, 1988
Inventors
Karl E. Wiegand
Patrick C. Hu
Assignee (at issue)
Ethyl Corporation

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 4,870,191
App. No.
07/223,010
Filed
1988-07-22
Granted
1989-09-26
Kind
A