D.3. Official Patent Application Filing Receipt for the invention titled "Use of Porous Chitosan Sponge for the Removal of Used Lubricating Oil in an Aqueous System," filed with the Brazilian National Institute of Industrial Property (INPI), confirming the creation of a new, original work currently undergoing the formal protection process, further establishing Mrs. Sousa’s consistent output of innovative research.

Exhibit D - Petitioner’s original scientific, scholarly, artistic, or business-related contributions of major significance in the field · groupOrder=4 · order=2