Who's the designer of Dr. House's (Hugh Laurie) leather motorcycle jacket on House?

I've been looking online all over to find out who makes that leather motorcycle jacket that Dr. House wears on House.The only info I've come up with online is that the patch letters either say"RTAI"or"KTAI", but those letters don't come up in any searches as references to motorcycles or racing.My friend thinks it's a Diesel jacket, but I don't see anything like it on websites that sell Diesel merch.My only other guesses would be that it is just made up by the costume designer of the show or it may have some Brittish background.Anyway, it's a really great jacket and If I could buy something like it for my fiance, cool.Here is a link to the only still photo that I could find on the web that is not FLASH: http://www.tvchitchat.net/userimages...62374668.pngOr you can go to Fox.com's HOUSE page, go to photos and the Flash player that comes up with a full lenght picture of him in this jacket.