朝日ソノラマ
Between June 21, 2007, and September 30 of the same year, Asahi Sonorama went through bankruptcy liquidation proceedings. The trademarks for "Sonosheet" and "Asahi Sonorama" were passed to their parent company, Asahi Shimbunsha (publisher of the "Asahi Shimbun"), and publication rights were handled by the publication division of that company. On April 1, 2008, Asahi Shimbunsha spun off its publication division into a subsidiary company, Asahi Shimbun Publications, and Asahi Sonorama is now considered a division of that company.