Patents by Inventor Thodore Lowes

Thodore Lowes 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: 11251164
    Abstract: Light emitting diodes are disclosed that utilize multiple conversion materials in the conversion process in order to achieve the desired emission color point. Different embodiments of the present invention can comprise different phosphor types in separate layers on, above or around one or a plurality of LED chips to achieve the desired light conversion. The LEDs can then emit a desired combination of light from the LED chips and conversion material. In some embodiments, conversion materials can be applied as layers of different phosphor types in order of longest emission wavelength phosphor first, followed by shorter emission phosphors in sequence as opposed to applying in a homogeneously mixed phosphor converter. The conversion material layers can be applied as a blanket over the LED chips and the area surrounding the chip, such as the surface of a submount holding the LED chips.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: February 15, 2022
    Assignee: CreeLED, Inc.
    Inventors: Fan Zhang, James Ibbetson, Bernd Keller, Thodore Lowes, Antony Van De Ven, Deborah Kircher, Tao Feng Gilbert, Peter Andrews