IP Library › Granted Patent US 4,806,675
Granted Patent Utility
US 4,806,675 · App. 07/111,470

Method of making mixed pentaerythritol esters having up to 75 percent thio-containing side chains

Inventors: Neil Dunski, Ali A. Bazzi
Patented Case View Patent ↗
Granted: Feb 21, 1989 Filed: Oct 19, 1987
Inventors
Neil Dunski
Ali A. Bazzi
Assignee (at issue)
MALLINCKRODT LLC

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 4,806,675
App. No.
07/111,470
Filed
1987-10-19
Granted
1989-02-21
Kind
A