MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202631095389 A) filed by Mahima Misti Sarkar; Swarnendu Roy; and Nirmali Gogoi on August 06, 2026, for A Hybrid Slow-Release Nano-Fertilizer Comprising Alginate-Coated Silica Nanoparticles And Fruit Waste-Derived Biochar.

Inventors include Mahima Misti Sarkar; Swarnendu Roy; and Nirmali Gogoi.

The application for the patent was published on September 25, 2026, under issue no. 39/2026.

Abstract: The present invention discloses a hybrid slow-release nano-fertilizer composition comprising silica nanoparticles synthesised by a sol-gel process and biochar derived from fruit-processing waste, encapsulated within an alginate polymer matrix in a plurality ...