Patents by Inventor Ian T. Witting

Ian T. Witting 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: 20180057957
    Abstract: An advanced crucible support system is described that allows for greater heat flow to and from the bottom of a crucible, preferably while also preventing excessive heat from reaching a heat exchanger. In particular, a support base is described that includes a plurality of spaced crown features disposed on the support base plate. The crown features receive and vertically support the crucible and are spaced to support the crucible and to allow heat flow between the plurality of crown features. In doing so, a top surface of spaced crown features are in direct contact with the crucible.
    Type: Application
    Filed: October 30, 2017
    Publication date: March 1, 2018
    Inventors: David Frances Broyer, Hui Zhang, Ning Duanmu, Ian T. Witting
  • Patent number: 9845548
    Abstract: According to the disclosed embodiments, an advanced crucible support system is described that allows for greater heat flow to and from the bottom of a crucible, preferably while also preventing excessive heat from reaching a heat exchanger. In particular, a support base is described that includes one or more vents enabling improved heat flow throughout the system. Also, according to one or more additional embodiments, the functionality of the crucible support is adapted to be leveraged by a crucible manipulating device. For example, the support plate may have a plurality of slots for insertion of a “lifting arm”, such that the entire support plate assembly, as well as the crucible itself while on the support assembly, may be lifted and transported as a single unit.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 19, 2017
    Assignee: GTAT Corporation
    Inventors: David F. Broyer, Hui Zhang, Ning Duanmu, Ian T. Witting
  • Publication number: 20150191846
    Abstract: Systems and methods that reduce the overall cost of producing a silicon ingot are provided herein. More specifically, one or more surface pieces may be sliced from a silicon boule in relation to a plurality of nodes at a particular orientation. These one or more surface pieces may then be formed into one or more seeds having a specific length, width and thickness usable in a silicon ingot growth process. By utilizing these pieces to form one or more seeds, pieces of a boule which would have been previously discarded may now be used to form high quality seeds for use in a silicon ingot grow process.
    Type: Application
    Filed: August 16, 2013
    Publication date: July 9, 2015
    Inventors: Ian T. Witting, Vikram Singh, Ning Duanmu
  • Publication number: 20150176150
    Abstract: According to the disclosed embodiments, an advanced crucible support system is described that allows for greater heat flow to and from the bottom of a crucible, preferably while also preventing excessive heat from reaching a heat exchanger. In particular, a support base is described that includes one or more vents enabling improved heat flow throughout the system. Also, according to one or more additional embodiments, the functionality of the crucible support is adapted to be leveraged by a crucible manipulating device. For example, the support plate may have a plurality of slots for insertion of a “lifting arm”, such that the entire support plate assembly, as well as the crucible itself while on the support assembly, may be lifted and transported as a single unit.
    Type: Application
    Filed: November 14, 2014
    Publication date: June 25, 2015
    Inventors: David F. Broyer, Hui Zhang, Ning Duanmu, Ian T. Witting