Nobody said Korg manufactured the NJM2069. And I do know NJMs are manufactured by JRC.
Besides, the notion that NJM has nothing to do with Korg is bull: talking about just the NJM2069, which is a fantastic filter if you've tried the 'Moog Slayer' and FM mods on the Poly-800, it's in that synth, the Korg DW-6000, the DW-8000 and the DSS-1.
From :
"SSM2044 chips are easily found as many thousand were made for Korg but the large orders never materialized as Korg made their own chip the NJM2069 and then went digital with the M1."
Yash