Patents by Inventor Anubhav Prasad

Anubhav Prasad 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).

  • Laser-colored sapphire material
    Patent number: 11325860
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 10, 2022
    Assignee: APPLE INC.
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad
  • LASER-COLORED SAPPHIRE MATERIAL
    Publication number: 20200017408
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad
  • Laser-colored sapphire material
    Patent number: 10464843
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: November 5, 2019
    Assignee: APPLE INC.
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad
  • LASER-COLORED SAPPHIRE MATERIAL
    Publication number: 20170137321
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Application
    Filed: February 1, 2017
    Publication date: May 18, 2017
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad
  • LASER-COLORED SAPPHIRE MATERIAL
    Publication number: 20170079153
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 16, 2017
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad
  • Laser-colored sapphire material
    Patent number: 9578768
    Abstract: A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: February 21, 2017
    Assignee: APPLE INC.
    Inventors: Michael M. Li, Christopher R. Fagan, Anubhav Prasad