Patents by Inventor David James Welker

David James Welker 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).

  • Patent number: 11279105
    Abstract: A method of making a waveguiding optical component includes processing a polymer optical material to form a billet having an axis of light transmission and having residual stress maintaining a transverse extent of the billet; placing the billet into a mold, the mold being configured to constrain transverse expansion of the billet according to a desired shape of the waveguiding optical component; and heating the billet in the mold to induce relaxation of the residual stress and corresponding transverse expansion of the billet, thereby forming the billet into the waveguiding optical component with the desired shape. An alternative method begins with a collection of individual canes or fiber segments which are fused during the heating process, bypassing a separate process of forming a billet.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 22, 2022
    Assignee: Incom, Inc.
    Inventors: David James Welker, Kenneth Christopher Nardone, Evan Franklin DeBlander, Eric Robert Davidson
  • Patent number: 10884142
    Abstract: A method of making a transverse Anderson localization (TAL) element includes mixing pellets together to make a mixture, the pellets being of two or more distinct materials having respective wave speeds effective to provide Anderson guiding. The mixture is fused to make a preform which has respective pellet-size areas of the distinct materials corresponding to the pellets in the mixture. One or more stretching operations is performed to stretch the preform into the TAL element.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: January 5, 2021
    Assignee: Incom, Inc.
    Inventor: David James Welker
  • Publication number: 20200124746
    Abstract: A method of making a transverse Anderson localization (TAL) element includes mixing pellets together to make a mixture, the pellets being of two or more distinct materials having respective wave speeds effective to provide Anderson guiding. The mixture is fused to make a preform which has respective pellet-size areas of the distinct materials corresponding to the pellets in the mixture. One or more stretching operations is performed to stretch the preform into the TAL element.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 23, 2020
    Inventor: David James Welker
  • Publication number: 20190389162
    Abstract: A method of making a waveguiding optical component includes processing a polymer optical material to form a billet having an axis of light transmission and having residual stress maintaining a transverse extent of the billet; placing the billet into a mold, the mold being configured to constrain transverse expansion of the billet according to a desired shape of the waveguiding optical component; and heating the billet in the mold to induce relaxation of the residual stress and corresponding transverse expansion of the billet, thereby forming the billet into the waveguiding optical component with the desired shape. An alternative method begins with a collection of individual canes or fiber segments which are fused during the heating process, bypassing a separate process of forming a billet.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 26, 2019
    Inventors: David James Welker, Kenneth Christopher Nardone, Evan Franklin DeBlander, Eric Robert Davidson
  • Patent number: 10052831
    Abstract: A wave guide face plate for transmitting an image formed in a scintillating material included as part of a transmitting medium is disclosed. The transmitting medium includes a random distribution of different refractive index regions in two orthogonal dimensions, and an essentially consistent refractive index in a third orthogonal dimension. The third orthogonal direction is aligned with a transmission axis of the wave transmitter extending from an input location to a wave detector location. The transmission efficiency of the wave guide faceplate is improved in situations where the entry angle of the input radiation is different from the axis of the wave transmitter as compared to conventional faceplates.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: August 21, 2018
    Assignee: Incom, Inc.
    Inventors: David James Welker, Eric Robert Davidson, Kristopher Alan Baur, Stephan Patrick Nelsen, Evan Franklin DeBlander, Zachary David Welker
  • Publication number: 20170016996
    Abstract: A wave guide face plate for transmitting an image formed in a scintillating material included as part of a transmitting medium is disclosed. The transmitting medium includes a random distribution of different refractive index regions in two orthogonal dimensions, and an essentially consistent refractive index in a third orthogonal dimension. The third orthogonal direction is aligned with a transmission axis of the wave transmitter extending from an input location to a wave detector location. The transmission efficiency of the wave guide faceplate is improved in situations where the entry angle of the input radiation is different from the axis of the wave transmitter as compared to conventional faceplates.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 19, 2017
    Inventors: David James Welker, Eric Robert Davidson, Kristopher Alan Baur, Stephan Patrick Nelsen, Evan Franklin DeBlander, Zachary David Welker
  • Patent number: 7837913
    Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: November 23, 2010
    Assignee: California Institute of Technology
    Inventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon
  • Publication number: 20100055144
    Abstract: Millimeter to nano-scale structures manufactured using a multi-component polymer fiber matrix are disclosed. The use of dissimilar polymers allows the selective dissolution of the polymers at various stages of the manufacturing process. In one application, biocompatible matrixes may be formed with long pore length and small pore size. The manufacturing process begins with a first polymer fiber arranged in a matrix formed by a second polymer fiber. End caps may be attached to provide structural support and the polymer fiber matrix selectively dissolved away leaving only the long polymer fibers. These may be exposed to another product, such as a biocompatible gel to form a biocompatible matrix. The polymer fibers may then be selectively dissolved leaving only a biocompatible gel scaffold with the pores formed by the dissolved polymer fibers.
    Type: Application
    Filed: August 10, 2005
    Publication date: March 4, 2010
    Applicant: California Institute of Technology
    Inventors: Jeff S. Sakamoto, James R. Weiss, Jean-Pierre Fleurial, Adam Kisor, Mark Tuszynski, Shula Stokols, Todd Edward Holt, David James Welker, Christopher David Breckon