Granted Patent
Utility
US 4,406,901 · App. 06/321,628
Ethers of substituted hydroxymethylpyrazines
Inventors:
Paolo Cozzi, Antonio Pillan, Leone Bertone, Pier P. Lovisolo
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Nov 16, 1981
Inventors
Paolo Cozzi
Antonio Pillan
Leone Bertone
Pier P. Lovisolo
Assignee (at issue)
Farmitalia Carlo Erba S.p.A.
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.