How many movies have Mamoru Oshii and Mitsuhisa Ishikawa collaborated on?

They have worked on 6 movies together! Their first movie together was Patlabor 2: The Movie (1993) while their highest rated movie together was Ghost in the Shell (1995). They have not worked together since Garm Wars: The Last Druid (2014). They are most known for their animation films together.