Patents by Inventor Kelly Marcum

Kelly Marcum 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).

  • High voltage vertical semiconductor device with multiple pillars in a racetrack arrangement
    Patent number: 9972681
    Abstract: A semiconductor device including a dummy pillar and a plurality of racetrack pillars. The dummy pillar of semiconductor material extends in a first lateral direction. The plurality of racetrack pillars, including the semiconducting material, surrounds the dummy pillar. Each of the plurality of racetrack pillars has a first linear section, which extends in the first lateral direction, and a first rounded section to form a racetrack shape. The plurality of racetrack pillars includes a first racetrack pillar and a second racetrack pillar. The first racetrack pillar is disposed proximate to the dummy pillar and the second racetrack pillar surrounds the first racetrack pillar. The first racetrack pillar is disposed between the dummy pillar and the second racetrack pillar. The semiconductor device includes a plurality of spacing regions including a first spacing region that surrounds the dummy pillar and is disposed between the first racetrack pillar and the dummy pillar.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: May 15, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Alexei Ankoudinov, Sorin Georgescu, Vijay Parthasarathy, Kelly Marcum, Jiankang Bu
  • High Voltage Vertical Semiconductor Device with Multiple Silicon Pillars in a Racetrack Arrangement
    Publication number: 20180061947
    Abstract: A semiconductor device including a dummy pillar and a plurality of racetrack pillars. The dummy pillar of semiconductor material extends in a first lateral direction. The plurality of racetrack pillars, including the semiconducting material, surrounds the dummy pillar. Each of the plurality of racetrack pillars has a first linear section, which extends in the first lateral direction, and a first rounded section to form a racetrack shape. The plurality of racetrack pillars includes a first racetrack pillar and a second racetrack pillar. The first racetrack pillar is disposed proximate to the dummy pillar and the second racetrack pillar surrounds the first racetrack pillar. The first racetrack pillar is disposed between the dummy pillar and the second racetrack pillar. The semiconductor device includes a plurality of spacing regions including a first spacing region that surrounds the dummy pillar and is disposed between the first racetrack pillar and the dummy pillar.
    Type: Application
    Filed: June 8, 2017
    Publication date: March 1, 2018
    Inventors: Alexei Ankoudinov, Sorin Georgescu, Vijay Parthasarathy, Kelly Marcum, Jiankang Bu