MUMBAI, India, Feb. 6 -- Intellectual Property India has published a patent application (202641007057 A) filed by Dr. S. M. Subash; Mr. Guduru Varun; Mr. Makkala Nithin Kumar; Ms. Gaddala Deepika; and Ms. Pantangi Nagadivya, Hyderabad, Telangana, on Jan. 23, for 'a system and method for establishing a rainfall infiltration tank based on limiting infiltration rate.'

Inventor(s) include Dr. S. M. Subash; Mr. Guduru Varun; Mr. Makkala Nithin Kumar; Ms. Gaddala Deepika; and Ms. Pantangi Nagadivya.

The application for the patent was published on Feb. 6, under issue no. 06/2026.

According to the abstract released by the Intellectual Property India: "The present invention relates to a rainfall infiltration tank system designed based on the limiting infiltration rate of in-situ soil for effective stormwater management and groundwater recharge. The system utilizes site-specific infiltration testing, such as a double-ring infiltrometer, to determine the maximum sustainable soil absorption rate. Based on the measured limiting infiltration rate, the infiltration tank is dimensioned by calculating the required infiltration contact area to ensure that inflow discharge does not exceed soil infiltration capacity. The tank comprises a containment structure having horizontal and vertical infiltration surfaces, layered filtration media including graded aggregates and coarse sand, and filter membranes selected from nylon cloth or geotextile to prevent clogging. Reinforcement elements provide structural stability, and a free storage zone accommodates peak rainfall events. The invention enables controlled percolation of stormwater, thereby reducing surface runoff, mitigating flooding, and enhancing groundwater recharge. The system is adaptable to different soil types and scalable for residential, institutional, and urban infrastructure applications."

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