Granted Patent
Utility
US 5,144,046 · App. 07/654,994
Synthesis of cyclic ketene acetals
Inventor:
Saughagya C. Mathur
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Feb 14, 1991
Inventor
Saughagya C. Mathur
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.