REAL QUICK: stuck in park ridge and need late night Korean
Amitabul (as it's actually spelled) is open till 9:30 pm, Tuesday through Saturday.
If you need a place open later than that, consider these places on the north/northwest side:
Il Song Jung (Bryn Mawr near Kimball) - till 2 a.m. daily
Haewoondae BBQ (California near Devon) - till 5 a.m. daily
San Soo Gap San (Western near Foster) - till 6 a.m. daily
P.S. I don't think there are ANY Korean restaurants in Chinatown, LOL!