Granted Patent
Utility
US 6,818,795 · App. 10/239,741
Process for the preparation of mixtures of methylenedianiline and its higher homologous products
Inventors:
Carlo Perego, Alberto De Angelis, Aldo Bosetti
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Mar 24, 2003
Inventors
Carlo Perego
Alberto De Angelis
Aldo Bosetti
Assignee (at issue)
Dow Global Technologies LLC
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.