IP Library › Granted Patent US 5,945,233
Granted Patent Utility
US 5,945,233 · App. 08/895,059

Process for producing polybenzimidazole pastes and gels for use in fuel cells

Inventors: Frank J. Onorato, Michael J. Sansone, Stuart M. French, Faruq Marikar
Patented Case View Patent ↗
Granted: Aug 31, 1999 Filed: Jul 16, 1997
Inventors
Frank J. Onorato
Michael J. Sansone
Stuart M. French
Faruq Marikar
Assignee (at issue)
Aventis Research & Technologies GmbH & Co.

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 5,945,233
App. No.
08/895,059
Filed
1997-07-16
Granted
1999-08-31
Kind
A