Siregar, K. N. (Inventor), Baequni, B. (Inventor), Nasir, N. M. (Inventor), Retnowati (Inventor), Kurniawan, R. (Inventor), Prabawa, A. (Inventor), Nur, R. J. B. (Inventor), Handayani, Y. (Inventor) & Darmawan, E. S. (Inventor), 2 Jul 2021, Patent No. EC00202131353