Patents by Inventor Joseph Leaman

Joseph Leaman 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).

  • Mesogen Polarizer
    Publication number: 20220334298
    Abstract: The present invention relates to a polarization filter for ophthalmic lenses. The polarization filter comprises a mesogen layer coated onto a retardation film, either directly or through an adhesive layer. The present invention further discloses that the polarization filter formed by employing a thin film or sheet, having a defined level of retardation between the light source and the mesogen layer, for example, a cholesteric mesogen layer, the multilayered laminate structure demonstrates linear polarization of the light transmitted through the mesogen laminate structure, and, hence, can be used in ophthalmic lenses, e.g. spectacle or eyeglass lenses. The polarization filter enhances the performance by allowing transmission of the polarization filter closer to the theoretical maximum transmission.
    Type: Application
    Filed: April 27, 2022
    Publication date: October 20, 2022
    Applicant: HOYA Optical Labs of America, Inc.
    Inventors: James Mulligan, Michael Boulineau, Jeffrey Brown, Jared Johnson, Michael Marshall, Sandy Goebel, Joseph Leaman
  • Mesogen polarizer
    Patent number: 11346989
    Abstract: The present invention relates to a polarization filter for ophthalmic lenses. The polarization filter comprises a mesogen layer coated onto a retardation film, either directly or through an adhesive layer. The present invention further discloses that the polarization filter formed by employing a thin film or sheet, having a defined level of retardation between the light source and the mesogen layer, for example, a cholesteric mesogen layer, the multilayered laminate structure demonstrates linear polarization of the light transmitted through the mesogen laminate structure, and, hence, can be used in ophthalmic lenses, e.g. spectacle or eyeglass lenses. The polarization filter enhances the performance by allowing transmission of the polarization filter closer to the theoretical maximum transmission.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 31, 2022
    Assignee: HOYA Optical Labs of America, Inc.
    Inventors: James Mulligan, Michael Boulineau, Jeffrey Brown, Jared Johnson, Michael Marshall, Sandy Goebel, Joseph Leaman
  • Mesogen Polarizer
    Publication number: 20200292740
    Abstract: The present invention relates to a polarization filter for ophthalmic lenses. The polarization filter comprises a mesogen layer coated onto a retardation film, either directly or through an adhesive layer. The present invention further discloses that the polarization filter formed by employing a thin film or sheet, having a defined level of retardation between the light source and the mesogen layer, for example, a cholesteric mesogen layer, the multilayered laminate structure demonstrates linear polarization of the light transmitted through the mesogen laminate structure, and, hence, can be used in ophthalmic lenses, e.g. spectacle or eyeglass lenses. The polarization filter enhances the performance by allowing transmission of the polarization filter closer to the theoretical maximum transmission.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 17, 2020
    Applicant: Vision Ease, LP
    Inventors: James Mulligan, Michael Boulineau, Jeffrey Brown, Jared Johnson, Michael Marshall, Sandy Goebel, Joseph Leaman