Patents by Inventor John D. Dredge, Jr.

John D. Dredge, Jr. 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).

  • Durable, inorganic, absorptive, ultra-violet, grid polarizer
    Patent number: 8947772
    Abstract: An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: February 3, 2015
    Assignee: Moxtek, Inc.
    Inventors: Eric Gardner, Bin Wang, Mark Davis, John D. Dredge, Jr.
  • DURABLE, INORGANIC, ABSORPTIVE, ULTRA-VIOLET, GRID POLARIZER
    Publication number: 20140313571
    Abstract: An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.
    Type: Application
    Filed: March 5, 2014
    Publication date: October 23, 2014
    Applicant: Moxtek, Inc.
    Inventors: Eric Gardner, Bin Wang, Mark Davis, John D. Dredge, JR.
  • Durable, inorganic, absorptive, ultra-violet, grid polarizer
    Patent number: 8755113
    Abstract: An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: June 17, 2014
    Assignee: Moxtek, Inc.
    Inventors: Eric Gardner, Bin Wang, Mark Davis, John D. Dredge, Jr.