Patents by Inventor Lothar Reichertz

Lothar Reichertz 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-color light emitting devices with compositionally graded cladding group III-nitride layers grown on substrates
    Patent number: 10128410
    Abstract: A light emitting device includes a substrate, multiple n-type layers, and multiple p-type layers. The n-type layers and the p-type layers each include a group III nitride alloy. At least one of the n-type layers is a compositionally graded n-type group III nitride, and at least one of the p-type layers is a compositionally graded p-type group III nitride. A first ohmic contact for injecting current is formed on the substrate, and a second ohmic contact is formed on a surface of at least one of the p-type layers. Utilizing the disclosed structure and methods, a device capable of emitting light over a wide spectrum may be made without the use of phosphor materials.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 13, 2018
    Assignee: ROSESTREET LABS ENERGY, INC.
    Inventors: Wladyslaw Walukiewicz, Iulian Gherasoiu, Lothar Reichertz
  • Multi-Color Light Emitting Devices with Compositionally Graded Cladding Group III-Nitride Layers Grown on Substrates
    Publication number: 20170012172
    Abstract: A light emitting device includes a substrate, multiple n-type layers, and multiple p-type layers. The n-type layers and the p-type layers each include a group III nitride alloy. At least one of the n-type layers is a compositionally graded n-type group III nitride, and at least one of the p-type layers is a compositionally graded p-type group III nitride. A first ohmic contact for injecting current is formed on the substrate, and a second ohmic contact is formed on a surface of at least one of the p-type layers. Utilizing the disclosed structure and methods, a device capable of emitting light over a wide spectrum may be made without the use of phosphor materials.
    Type: Application
    Filed: March 10, 2016
    Publication date: January 12, 2017
    Applicant: ROSESTREET LABS ENERGY, INC.
    Inventors: Wladyslaw Walukiewicz, Iulian Gherasoiu, Lothar Reichertz
  • Multi-color light emitting devices with compositionally graded cladding group III-nitride layers grown on substrates
    Patent number: 9312430
    Abstract: A light emitting device includes a substrate, multiple n-type layers, and multiple p-type layers. The n-type layers and the p-type layers each include a group III nitride alloy. At least one of the n-type layers is a compositionally graded n-type group III nitride, and at least one of the p-type layers is a compositionally graded p-type group III nitride. A first ohmic contact for injecting current is formed on the substrate, and a second ohmic contact is formed on a surface of at least one of the p-type layers. Utilizing the disclosed structure and methods, a device capable of emitting light over a wide spectrum may be made without the use of phosphor materials.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: April 12, 2016
    Assignee: RoseStreet Labs Energy, Inc.
    Inventors: Wladyslaw Walukiewicz, Iulian Gherasoiu, Lothar Reichertz