MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202531130157 A) filed by Narula Institute Of Technology, Kolkata, West Bengal, on Dec. 22, 2025, for 'mortar-free interlocking concrete block system for wall construction.'

Inventor(s) include Arya Banerjee; Subhankar Dey; Anasuya Mondal; and Suraj Kumar.

The application for the patent was published on May 1, under issue no. 18/2026.

According to the abstract released by the Intellectual Property India: "The present invention details a modular wall construction system utilizing a series of specialized concrete blocks (B1, C1, B2, B3, B4, B5) engineered for mortar-free dry-stack assembly. Each block is characterized by precision-calibrated grooves, rec...