<Tr> <Th> Subsidiaries </Th> <Td> Orange Julius Karmelkorn </Td> </Tr> <Tr> <Th> Website </Th> <Td> dairyqueen.com </Td> </Tr> <P> Dairy Queen, often abbreviated DQ, is a chain of soft serve ice cream and fast - food restaurants owned by International Dairy Queen, Inc., a subsidiary of Berkshire Hathaway . International Dairy Queen, Inc., also owns Orange Julius and Karmelkorn . </P> <P> The first DQ restaurant was located in Joliet, Illinois . It was operated by Sherb Noble and opened for business on June 22, 1940 . It served a variety of frozen products, such as soft serve ice cream . </P>

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