Patents by Inventor Nipa JOSHI

Nipa JOSHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220291428
    Abstract: Provided herein is a retroreflective film comprising one or more layers (or coating layers) including a small quantity of fluorescent dye that shifts color readings (e.g., chromaticity coordinates) in specific regions located within a color space to comply with industry standards (e.g., United States, Europe, China and Brazil) while improving luminance factor and maintaining retroreflectivity. The one or more layers (or coating layers) of the retroreflective film includes a fluorescent dye from 0.0001 wt. % to 0.05 wt. %, based on the total weight of the layer, and exhibits a color reading that is situated in the color space defined by CIE chromaticity coordinates (0.305, 0.315), (0.335, 0.345), (0.325, 0.355) and (0.295, 0.325). The retroreflective film also achieves a good balance of high luminance and retroreflectivity.
    Type: Application
    Filed: July 16, 2020
    Publication date: September 15, 2022
    Inventors: Michael E. HANNINGTON, Nipa JOSHI, Guang-Xue WEI