IP Library › Granted Patent US 4,902,804
Granted Patent Utility
US 4,902,804 · App. 07/244,608

Multifunctional thiadiazole lubricant additives

Inventors: James P. King, Sameeh S. Toukan
Patented Case View Patent ↗
Granted: Feb 20, 1990 Filed: Sep 6, 1988
Inventors
James P. King
Sameeh S. Toukan
Assignee (at issue)
Pennwalt 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 4,902,804
App. No.
07/244,608
Filed
1988-09-06
Granted
1990-02-20
Kind
A