Dean Fertita

In this video Dean Fertita can be seen playing a Novation Bass Station II

At 6:40 and 6:45 of this live performance by The Dead Weather, Fertita can be seen playing a Moog Little Phatty.

in this photo Dean can be seen playing a Nord Electro 2 73 Key

In the live performance video of "Will There Be Enough Water?" by The Dead Weather at The Roxy, Dean Fertita can be seen using a Korg CX-3 Organ on stage behind Jack White.

At 45:48-45:53 during 'the Lost Art Of Keeping A Secret' Dean can be seen using during their Reading show. He keeps it to the left of what I believe is a Hohner D6 Clarinet (used for 'I Appear Missing' and 'Little Sister's live extended intro) and under the Moog Little Phatty. You can only see the keys but you can see the distinct screen that shows you what instrument you've selected

In the image titled "maxresdefault.jpg" from Ytimg, Dean Fertita is shown with a Wurlitzer A-100, indicating his use of this vintage electric piano.

If you pause at exactly 57:07, you can see the keyboard he plays during "I Appear Missing". It says Hohner Clavinet Pianet D6. He was also listed in the albums personal parts as playing a clavinet on track 9 (which is "I Appear Missing")

At minute mark 34:22 you get an overview shot of the piano that Dean's playing on during "In The Fade", it's used throughout the show though for various songs.

This is from a recent acoustic performance on 1Live. During the video you can see the Korg logo and the distinctive shape that the SV-1 has.