MUMBAI, India, July 11 -- Intellectual Property India has published a patent application (202311089902 A) filed by Rachtr Chemicals Private Limited, Alwar, Rajasthan, on Dec. 29, 2023, for 'process for seamless joining of light-colored stones with enhanced aesthetic and functional properties.'
Inventor(s) include Abhisek Poddar; and Ramakant Pandey.
The application for the patent was published on July 11, under issue no. 28/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a process for joining edges of light-colored stones, such as marble, granite, and sandstone, to achieve seamless joints without the problem of darkened seams (bleeding) caused by adhesive penetration. The process involves cleaning the stone surfaces with a pH-neutral cleaner, treating the stone with a fluoropolymer-based impregnator to make it water- and oil-repellent, and applying a nanomaterial-based sealer to the edges to block micro-pores and prevent adhesive seepage. The stones are then affixed to a surface using a suitable adhesive, and the edges are joined with a high-performance, silica-reinforced adhesive, ensuring strong, durable, and invisible joints. The present invention offers an eco-friendly and sustainable solution by utilizing biodegradable cleaners and renewable materials, while also integrating automation for precise and uniform application."
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