4-anilinoquinazoline derivatives bearing a heteroaryl substituted at the 6-position and possessing anti-cell-proliferation properties

Granted: Sep 21, 1999 Filed: May 22, 1997

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.