Patents by Inventor Paul Ramon Markoff Johnson

Paul Ramon Markoff Johnson 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).

  • Multi-colored dielectric coating
    Patent number: 11187834
    Abstract: A multi-color dielectric coating is formed using interleaved layers of dielectric material, having alternating refractive index, to create reflections at selected wavelengths, thus appearing as different colors. Etching of selected layers at selected locations changes the color appearance of the etched locations, thus generating a coating having multiple colors. The thicknesses of the layers are chosen such that the path-length differences for reflections from different high-index layers are integer multiples of the wavelength for which the coating is designed.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: November 30, 2021
    Assignee: INTEVAC, INC.
    Inventors: Terry Bluck, Paul Ramon Markoff Johnson, Alexander Vassilievich Demchuk
  • MULTI-COLORED DIELECTRIC COATING
    Publication number: 20190383976
    Abstract: A multi-color dielectric coating is formed using interleaved layers of dielectric material, having alternating refractive index, to create reflections at selected wavelengths, thus appearing as different colors. Etching of selected layers at selected locations changes the color appearance of the etched locations, thus generating a coating having multiple colors. The thicknesses of the layers are chosen such that the path-length differences for reflections from different high-index layers are integer multiples of the wavelength for which the coating is designed.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 19, 2019
    Inventors: Terry Bluck, Paul Ramon Markoff Johnson, Alexander Vassilievich Demchuk