MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202521128929 A) filed by Symbiosis International, Pune, Maharashtra, on Dec. 18, 2025, for 'a double-shutter internal formwork system for pile head de-bonding and chipping elimination.'

Inventor(s) include Humera Khanum; Sathwik Reddy; Farhan Shaikh; Krunal Dhanani; Rohal Patil; Raviraj Chuddasama; and Parth Raichur.

The application for the patent was published on Jan. 9, under issue no. 02/2026.

According to the abstract released by the Intellectual Property India: "A double-shutter internal formwork system (100) prevents concrete bonding to pile reinforcement at cutoff level in bored cast-in-situ piles. The system includes: a top plate (101) as an ...