The 8272/µPD765 was the result of a cross-licensing deal between NEC and Intel.
It was essentially NEC design.The extent of licensing peripheral chips from Intel was pretty broad. [https://classiccmp.org/mailman3/hyperkitty/list/cctalk@classiccmp.org/thread/MMWRWPGKWRVOLMUBIFQTZSCRRMF3YOXF/ Source]
[https://scarybeastsecurity.blogspot.com/2020/11/reverse-engineering-forgotten-1970s.html The decapped photos of Intel 8271, NEC D765 and Intel 8272 chips] prove that NEC D765 and Intel 8272 chips are identical.