Patents by Inventor Roger Jerome Araujo

Roger Jerome Araujo 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).

  • Photochromic glass with sharp cutoff
    Patent number: 10683232
    Abstract: A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: June 16, 2020
    Assignee: Corning Incorporated
    Inventors: Roger Jerome Araujo, Nicholas Francis Borrelli, Nadja Teresia Lönnroth, David Lathrop Morse, Thomas Philip Seward, III
  • PHOTOCHROMIC GLASS WITH SHARP CUTOFF
    Publication number: 20190002335
    Abstract: A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.
    Type: Application
    Filed: September 5, 2018
    Publication date: January 3, 2019
    Inventors: Roger Jerome Araujo, Nicholas Francis Borrelli, Nadja Teresia Lönnroth, David Lathrop Morse, Thomas Philip Seward, III
  • Photochromic glass with sharp cutoff
    Patent number: 10150692
    Abstract: A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: December 11, 2018
    Assignee: Corning Incorporated
    Inventors: Roger Jerome Araujo, Nicholas Francis Borrelli, Nadja Teresia Lönnroth, David Lathrop Morse, Thomas Philip Seward, III
  • PHOTOCHROMIC GLASS WITH SHARP CUTOFF
    Publication number: 20170174558
    Abstract: A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.
    Type: Application
    Filed: November 17, 2016
    Publication date: June 22, 2017
    Inventors: Roger Jerome Araujo, Nicholas Francis Borrelli, Nadja Teresia Lönnroth, David Lathrop Morse, Thomas Philip Seward, III