株式会社円谷プロダクション

Tsuburaya Productions is a Japanese special effects studio founded in 1963 by special effects wizard Eiji Tsuburaya and was run by his family, until October 2007, when the family sold the company to advertising agency TYO Inc. The studio is best known for producing the Ultra Series. Since 2007, the head office has been located in Hachimanyama, Setagaya, Tokyo.

The company also owns an animation studio of the same name where they work on anime series along with OLM, Bee Media, Madhouse and many more.

(Source: Wikipedia)