PV Nano Cell announced that the U.S. Patent and Trademark Office has granted its silver nano particles patent. PV Nano Cell's Silver Nano particles patent titled "STABLE DISPERSIONS OF MONOCRYSTALLINE NANOMETRIC SILVER PARTICLES," covers a concentrated dispersion of nanometric silver particles, plurality of nanometric silver particles, in which a majority are single-crystal silver particles, the plurality of nanometric silver particles having an average secondary particle size (d50) within a range of 30 to 300 nanometers, the particles disposed within the solvent; and a method of producing the dispersion.