His son Halil İbrahim Adil Dindar came to Istanbul in 1931. He started a helva production and sale shop at Koska. In 1982, after the death of their father, the three Dindar brothers inherited the company and divided it into two. They made an agreement to continue to use the brand name of Koska, both of them independently. Nevzat and Mümtaz Dindar established "Merter Helva" under the brand name "Koska". Mahir Dindar established "Mahir Gıda" under the brand name "Koska Helvacısı". Thus both companies market(ed) their products using the traditional name "Koska". 