Granted Patent
Utility
US 4,827,044 · App. 07/165,616
Process of preparation of ketones
Inventors:
Pierre Tozzolino, Gerard Cahiez
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Mar 8, 1988
Inventors
Pierre Tozzolino
Gerard Cahiez
Assignee (at issue)
Societe Nationale Elf Aquitaine
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.