MUMBAI, India, Feb. 13 -- Intellectual Property India has published a patent application (202541125166 A) filed by D. Kalyan, Adyar, Tamil Nadu, on Dec. 11, 2025, for 'sustainable biocompatible and antimicrobial corrosion inhibitor for 316l stainless steel and preparation thereof.'
Inventor(s) include D. Kalyan; Sribalaji P; Devadharshni Beeshman; Jawahar S; and Syedjavith S.
The application for the patent was published on Feb. 13, under issue no. 07/2026.
According to the abstract released by the Intellectual Property India: "A green formulation is developed for 3 16L stainless steel using nanosilica extracted from natural clay and herbal composite from the stem of Urtica dioica and Cissus quadrangularis. Average size of nanosilica is found to be 25 nm and agar well diffusion shows concentration dependent increase in antibacterial activity with RAE values 60% (SiNPs) and 70%. (herbal composite) at 200J.!glml. Biocompatibility assay on 3T3 fibroblasts confirms cell viability of 90.93% for SiNPs and 80.1!3% for herbal composite at 200 J.lg/ml. Weight loss measurement reveals reduction in weight loss of coated 316 L stainless steel compared to uncoated steel from 0.04 to 0.016 mg cm-2 s-*, yielding 60% inhibition of corrosion. Electrochemical analysis shows inctease in charge transfer resistance from 1.5 k.O cm 2 (uncoated) to 2.5 k.O cm2 (coated steel). These results emphasis that the herbal formulation exhibited strong corrosion resistance, antimicrobial activity and biocompatibility confirms its potential as a suslainable green corrosion inhibitor for biomedical implants."
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