Granted Patent
Utility
US 5,081,285 · App. 07/659,790
Production of ethyl 3-ethoxypropanoate by acid catalyzed addition of ethanol to ethyl acrylate
Inventors:
Jerry D. Unruh, Jerry A. Broussard
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Feb 21, 1991
Inventors
Jerry D. Unruh
Jerry A. Broussard
Assignee (at issue)
Hoechst Celanese 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.