[Class : 5] Antimicrobial Preparations In The Form Of Coatings For Use On Personal Protective Equipment, And Heating, Ventilation, And Air Conditioning (Hvac) Systems.[Class : 9] Respiratory Mask Filters.[Class : 10] Protective Breathing Masks For Protection Against Transmission Of Microbial Infections For Medical Purposes; Sanitary Masks Worn To Cover The Nose And Mouth To ...