Granted Patent
Utility
US 4,444,918 · App. 06/443,779
Aromatic polyols made from waste streams from the manufacture of terephthalic acids, alkylene glycols and dibasic acids
Inventor:
Michael E. Brennan
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Nov 22, 1982
Inventor
Michael E. Brennan
Assignee (at issue)
Texaco Inc.
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.