The object
Mark Kennedy Bantugon invented PiliSeal, an aviation sealant made from discarded pili-tree resin for aircraft fuel-tank repairs. The Philippine intellectual-property office records Bantugon as inventor of the resin composition for sealants and flame retardants; 2025 reporting describes the material's fuel, temperature and pressure resistance.
What Mark did
Invented PiliSeal, a plant-resin-based aviation sealant for aircraft fuel tanks.
Why it matters
PiliSeal offers a bio-based material alternative to conventional aircraft fuel-tank sealants, coupling a safety-critical industrial use with a waste-resin feedstock.
Living-status check
The European Patent Office named Bantugon a 2025 Young Inventors Prize finalist, and Philippine reporting covered his current aviation-sealant work in June 2025.