MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202631070056 A) filed by Dr. Srinivas Vadapalli; Dr. Ch Kodandarama Rao; Dr. V Vandana; Dr. B Koteswara Rao; and Dr. Babi Lakkoju on June 04, 2026, for Bio-Lubricant Engine Oil Blends With Surface-Modified Graphene Nanoplatelets For Automotive And Marine Engine Applications.
Inventors include Dr. Srinivas Vadapalli; Dr. Ch Kodandarama Rao; Dr. V Vandana; Dr. B Koteswara Rao; and Dr. Babi Lakkoju.
The application for the patent was published on June 19, 2026, under issue no. 25/2026.
Abstract: ABSTRACT BIO-LUBRICANT ENGINE OIL BLENDS WITH SURFACE-MODIFIED GRAPHENE NANOPLATELETS FOR AUTOMOTIVE AND MARINE ENGINE APPLICATIONS A lubricant composition and method for automotive and marine engines are disclosed. A pentaerythritol ester bio-lubricant synthesized from vegetable seed oil is blended with commercial mineral engine oil at 10-30 vol.% to form a bio-based engine oil blend. Surface-modified graphene nanoplatelets are prepared using surfactant-assisted treatment, dispersed into the blend at about 0.025-0.1 wt.% by sonication, and their dispersion stability is verified over at least two months. The resulting nano-engine oils exhibit reduced friction and wear and increased weld load and load-wear index in four-ball and pin-on-disc tribological tests while maintaining acceptable physicochemical properties within ASTM limits. To be accompanied with FIG. 2 (representative figure).
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