Granted Patent
Utility
US 4,948,866 · App. 07/402,577
Process for preparing 2,3-bis(hydroxymethyl) bicyclo [2,2,1] heptane and polyester therewith
Inventors:
Kou-Chang Liu, Suzanne B. Nelsen
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Sep 5, 1989
Inventors
Kou-Chang Liu
Suzanne B. Nelsen
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.