"Blade Runner" was taken from a 1974 Alan E. Nourse novel called "The Bladerunner"; the name's relation to PKD is tangential at best.
The name was taken from Nourse but via ER Burroughs’ script/book. The name was bought actually. But the plot, that came from PK Dick’s novel.
There's also a 1979 science fiction novella by William S. Burroughs titled Blade Runner (a movie)