Patents by Inventor Keith H. Dykstra

Keith H. Dykstra 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).

  • Lighting device that deactivates dangerous pathogens while providing visually appealing light
    Patent number: 10823369
    Abstract: A lighting device configured to deactivate pathogens in an environment. The lighting device includes at least one first light-emitting element configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment. The lighting device also includes at least one second light-emitting element configured to emit light having a wavelength of greater than 420 nm. A first combined light output of the light emitted by the at least one first and the at least one second light-emitting elements includes visible light that is perceived as white light. The white light has properties that make it visually appealing and unobjectionable.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 3, 2020
    Assignee: KENALL MANUFACTURING COMPANY
    Inventors: Patrick J. Marry, Nathan D. Heiking, Keith H. Dykstra
  • LIGHTING DEVICE THAT DEACTIVATES DANGEROUS PATHOGENS WHILE PROVIDING VISUALLY APPEALING LIGHT
    Publication number: 20190224350
    Abstract: A lighting device configured to deactivate pathogens in an environment. The lighting device includes at least one first light-emitting element configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment. The lighting device also includes at least one second light-emitting element configured to emit light having a wavelength of greater than 420 nm. A first combined light output of the light emitted by the at least one first and the at least one second light-emitting elements includes visible light that is perceived as white light. The white light has properties that make it visually appealing and unobjectionable.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 25, 2019
    Inventors: Patrick J. Marry, Nathan D. Heiking, Keith H. Dykstra
  • Lighting Device that Deactivates Dangerous Pathogens While Providing Visually Appealing Light
    Publication number: 20160375162
    Abstract: A lighting device configured to deactivate pathogens in an environment. The lighting device includes at least one first light-emitting element configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment. The lighting device also includes at least one second light-emitting element configured to emit light having a wavelength of greater than 420 nm. A first combined light output of the light emitted by the at least one first and the at least one second light-emitting elements includes visible light that is perceived as white light. The white light has properties that make it visually appealing and unobjectionable.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 29, 2016
    Applicant: KENALL MANUFACTURING COMPANY
    Inventors: Patrick J. Marry, Nathan D. Heiking, Keith H. Dykstra