IP Library › Granted Patent US 4,917,849
Granted Patent Utility
US 4,917,849 · App. 07/112,586

Process for preparing ionomers

Inventors: Jeffrey A. Jones, Manfred Heimberg
Patented Case View Patent ↗
Granted: Apr 17, 1990 Filed: Oct 26, 1987
Inventors
Jeffrey A. Jones
Manfred Heimberg
Assignee (at issue)
National Distillers and Chemical 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 4,917,849
App. No.
07/112,586
Filed
1987-10-26
Granted
1990-04-17
Kind
A