Granted Patent
Utility
US 6,656,946 · App. 09/934,772
Aminoquinazolines which inhibit signal transduction mediated by tyrosine kinases
Inventors:
Frank Himmelsbach, Elke Langkopf, Birgit Jung, Stefan Blech, Flavio Solca
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Aug 22, 2001
Inventors
Frank Himmelsbach
Elke Langkopf
Birgit Jung
Stefan Blech
Flavio Solca
Assignee (at issue)
BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG
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.