Patents by Inventor Allan SADUN

Allan SADUN 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).

  • Pressure-sensitive writing media comprising electrophoretic materials
    Patent number: 11249367
    Abstract: Systems and methods are disclosed for pressure-sensitive, electrophoretic displays, which may optionally include haptic feedback. A display may comprise a first conductive layer having a pressure-sensitive conductivity and an electrophoretic layer positioned adjacent to the first conductive layer, wherein the electrophoretic layer is in electrical communication with the first conductive layer and is configured to locally change state based on a pressure applied to the first conductive layer. Local and global writing and erasing of the display can also be achieved.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: February 15, 2022
    Assignee: E Ink Corporation
    Inventors: John L. Chuma, Allan Sadun, Stephen J. Telfer
  • Three dimensional display apparatus
    Patent number: 10969604
    Abstract: An apparatus for a three-dimensional display is disclosed that includes a waveguide having a pair of opposed faces configured to propagate radiation along a length of the waveguide between the faces, a radiation source optically coupled to the waveguide and configured to transmit the radiation to the waveguide, at least one prismatic element having a face optically coupled to at least one of the faces of the waveguide, and a layer of image modulating material optically coupled to at least one of the faces of the waveguide. The image modulating material may be optically coupled to an area of at least one of the faces of the waveguide, at least a portion of the area being located outside a perimeter of a face of the prismatic element optically coupled to at least one of the faces of the waveguide.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: April 6, 2021
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Stephen Bull, John L. Chuma, George G. Harris, Kosta Ladavac, Allan Sadun
  • PRESSURE-SENSITIVE WRITING MEDIA COMPRISING ELECTROPHORETIC MATERIALS
    Publication number: 20200174336
    Abstract: Systems and methods are disclosed for pressure-sensitive, electrophoretic displays, which may optionally include haptic feedback. A display may comprise a first conductive layer having a pressure-sensitive conductivity and an electrophoretic layer positioned adjacent to the first conductive layer, wherein the electrophoretic layer is in electrical communication with the first conductive layer and is configured to locally change state based on a pressure applied to the first conductive layer. Local and global writing and erasing of the display can also be achieved.
    Type: Application
    Filed: November 12, 2019
    Publication date: June 4, 2020
    Inventors: John L. CHUMA, Allan SADUN, Stephen J. TELFER, Stephen BULL, Sunil Krishna SAINIS, Seth J. BISHOP, Richard J. PAOLINI, JR., Kosta LADAVAC
  • THREE DIMENSIONAL DISPLAY APPARATUS
    Publication number: 20200096779
    Abstract: An apparatus for a three-dimensional display is disclosed that includes a waveguide having a pair of opposed faces configured to propagate radiation along a length of the waveguide between the faces, a radiation source optically coupled to the waveguide and configured to transmit the radiation to the waveguide, at least one prismatic element having a face optically coupled to at least one of the faces of the waveguide, and a layer of image modulating material optically coupled to at least one of the faces of the waveguide. The image modulating material may be optically coupled to an area of at least one of the faces of the waveguide, at least a portion of the area being located outside a perimeter of a face of the prismatic element optically coupled to at least one of the faces of the waveguide.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 26, 2020
    Inventors: Stephen J. TELFER, Stephen BULL, John L. CHUMA, George G. HARRIS, Kosta LADAVAC, Allan SADUN