Granted Patent
Utility
US 4,812,553 · App. 07/109,125
Preparation of unsaturated polyesters using bis-hydroxyalkyl esters of aromatic dicarboxylic acids
Inventor:
Stephen H. Harris
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Oct 16, 1987
Inventor
Stephen H. Harris
Assignee (at issue)
Arco Chemical Technology, L.P.
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.