Patents by Inventor Michael Colwell

Michael Colwell 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: 20240071725
    Abstract: Disclosed herein are systems, methods, and devices processing feed material utilizing a microwave plasma apparatus comprising a powder ingress preventor (PIP). In some embodiments, the microwave plasma apparatus comprises a core plasma tube and a liner; and a ring structure comprising: a bearing surface, the bearing surface contacting an interior diameter of the core plasma tube; and an opening, the opening contacting an outer diameter of the liner.
    Type: Application
    Filed: August 17, 2023
    Publication date: February 29, 2024
    Inventors: Michael C. Kozlowski, Ed Petersen, John Colwell, Anthony Andrew
  • Patent number: 5843813
    Abstract: VLSI I/O structures to reduce the effects of simultaneous switching noise (SSN) on output driver circuits and enhance electrostatic discharge immunity, while reducing chip area, in both input receiver circuits and output driver circuits include improved transistors having deep-junction drain and a multi-cascaded, resistive deep-junction source structure.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: December 1, 1998
    Assignee: LSI Logic Corporation
    Inventors: Hua-Fang Wei, Michael Colwell, Randall E. Bach
  • Patent number: 5773855
    Abstract: Field-effect transistors are formed on a substrate having silicided elements including diffusion (source and drain) regions and polysilicon gates. The silicided surfaces of these elements have low ohmic resistance and are used to provide interconnection between contacts that are spaced from each other, thereby freeing routing areas for other interconnections. The diffusion regions of adjacent transistors have edges that face each other, and are formed with indentations which constitute portions of a substrate tap area. The low ohmic resistance of the silicided surfaces of the diffusion regions enables the substrate tap area to be cut out of the diffusion regions without degrading the electrical performance of the transistors, thereby providing a substantial reduction in the space required for the transistors on the substrate.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: June 30, 1998
    Assignee: LSI Logic Corporation
    Inventors: Michael Colwell, Gary Cheung, Paul Torgerson
  • Patent number: 5728612
    Abstract: A method and resulting structure is disclosed for extending or enlarging the effective volumes of one or more source, drain, and/or emitter regions of integrated circuit structures such as an SCR structure and/or an MOS structure designed to protect an integrated circuit structure from damage due to electrostatic discharge (ESD). The additional effective volume allows the SCR and/or MOS protection devices to handle additional energy from an electrostatic discharge applied, for example, to I/O contacts electrically connected to the SCR protection structure. The additional effective volume is obtained, without additional doping or masking steps, by forming individual deep doped regions or wells, beneath one or more heavily doped source, drain, and emitter regions, at the same time and to the same depth and doping concentration as conventional main P wells and/or N wells which are simultaneously formed in the substrate, whereby no additional masks and implanting steps are needed.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: March 17, 1998
    Assignee: LSI Logic Corporation
    Inventors: Hua-Fang Wei, Michael Colwell
  • Patent number: 5670890
    Abstract: An integrated circuit includes a plurality of signal lines, a plurality of pull transistors connected between the signal lines respectively and an electrical potential, and an IDDQ test control for turning on the pull transistors for normal operation, and for turning off the pull transistors for IDDQ testing. The IDDQ test control includes a test signal generator for generating an IDDQ test control signal that turns off the pull transistors, and an IDDQ test signal line that is connected to the test signal generator and to the pull transistors. The pull transistors are designed within a periphery of the circuit, and the IDDQ test signal line forms a ring. The test signal generator includes an external pin, a special buffer, or a boundary scan system including a chain of boundary scan cells and a test access port controller. The test control signal can be generated by one of the boundary scan cells, or by the test access port controller.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: September 23, 1997
    Assignee: LSI Logic Corporation
    Inventors: Michael Colwell, Rochit Rajsuman, Ray Abrishami, Zarir B. Sarkari
  • Patent number: 5644251
    Abstract: An integrated circuit includes a plurality of signal lines, a plurality of pull transistors connected between the signal lines respectively and an electrical potential, and an IDDQ test control for turning on the pull transistors for normal operation, and for turning off the pull transistors for IDDQ testing. The IDDQ test control includes a test signal generator for generating an IDDQ test control signal that turns off the pull transistors, and an IDDQ test signal line that is connected to the test signal generator and to the pull transistors. The pull transistors are designed within a periphery of the circuit, and the IDDQ test signal line forms a ring. The test signal generator includes an external pin, a special buffer, or a boundary scan system including a chain of boundary scan cells and a test access port controller. The test control signal can be generated by one of the boundary scan cells, or by the test access port controller.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: July 1, 1997
    Assignee: LSI Logic Corporation
    Inventors: Michael Colwell, Rochit Rajsuman, Ray Abrishami, Zarir B. Sarkari