Patents by Inventor PREETHAM RAO

PREETHAM RAO 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).

  • Publication number: 20170103907
    Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for semiconductor processing, more particularly, to a thermal process chamber. The thermal process chamber may include a substrate support, a first plurality of heating elements disposed over the substrate support, and one or more high-energy radiant source assemblies disposed over the first plurality of heating elements. The one or more high-energy radiant source assemblies are utilized to provide local heating of cold regions on a substrate disposed on the substrate support during processing. Localized heating of the substrate improves temperature profile, which in turn improves deposition uniformity.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 13, 2017
    Inventors: Schubert S. CHU, Douglas E. HOLMGREN, Kartik SHAH, Palamurali GAJENDRA, Nyi O. MYO, Preetham RAO, Kevin Joseph BAUTISTA, Zhiyuan YE, Martin A. HILKENE, Errol Antonio C. SANCHEZ, Richard O. COLLINS
  • Publication number: 20160234881
    Abstract: A lamphead for thermal processing of a substrate is provided. The lamphead includes a housing having a first edge surrounding a first plane. The lamphead further includes a plurality of segmented lamps disposed within the housing, each segmented lamp aligned substantially parallel to the first plane. Each segmented lamp includes a first end connected to a location on the housing; a first wire segment connected to the first end; a first filament connected to the first wire segment; an intermediate wire segment connected to the first filament; a second filament connected to intermediate wire segment; a second wire segment connected to the second filament; and a second end connected to the second wire segment; where the second end is connected to an opposing location on the housing.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 11, 2016
    Inventors: Preetham RAO, Abhilash J. MAYUR
  • Publication number: 20160083840
    Abstract: Embodiments described herein include a susceptor for semiconductor processing including an oriented graphite plate that may have a thickness of at least 1 mm. The susceptor may have a support member, and the oriented graphite plate may be disposed on the support member. The support member may have a center thermal conduit and an edge thermal conduit, and may be substantially solid between the center thermal conduit and the edge thermal conduit.
    Type: Application
    Filed: September 23, 2015
    Publication date: March 24, 2016
    Inventors: PREETHAM RAO, Subramani Iyer, Kartik Shah, Mehran Behdjat