Granted Patent
Utility
US 4,935,555 · App. 07/276,002
Purification of neopentyl glycol
Inventors:
Carole L. Elias, Marvin C. Fields
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Nov 25, 1988
Inventors
Carole L. Elias
Marvin C. Fields
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.