Granted Patent
Utility
US 4,927,976 · App. 07/402,370
Process for preparing 2,3-bis(hydroxyethoxymethyl) bicyclo [2,2,1] heptane and polyester therewith
Inventor:
Kou-Chang Liu
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Sep 5, 1989
Inventor
Kou-Chang Liu
Assignee (at issue)
GAF Chemicals 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.