1. Shiyan L. N., Machekhina K. I., Smirnov A. P., Voyno D. A. «A method for purifying groundwater from stable iron forms», Patent RU № 2492147, a priority of 9 December 2011.
2. Shiyan L. N., Tropina E. A., Machekhina K. I., Gryaznova E. N., Vlasov V. A. «A method for preparing the model of colloid solution», Patent RU № 2502556, a priority of 12 July 2012.