What is "koratkar"

Koratkar is one of the Indian names:

• Keshav Rao Koratkar, was a pioneer of political, social and educational reforms in Hyderabad State, India.
• Nikhil Koratkar is a Professor of Mechanical Engineering and Materials Science at Rensselaer Polytechnic Institute.
• Vinayak Rao Koratkar, was a political leader in Hyderabad State and Member of 2nd Lok Sabha.