Patents by Inventor Steven Schell

Steven Schell 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: 9685432
    Abstract: A multi-gate Schottky depletion-mode field effect transistor (FET), at least one diode and two resistors comprise a compact electrostatic discharge (ESD) protection structure. This ESD protection structure can be laid out in a smaller area than typical multiple diode ESD devices. The multi-gate FET may comprise various types of high-electron-mobility transistor (HEMT) devices, e.g., (pseudomorphic) pHEMT, (metamorphic) mHEMT, induced HEMT. The multiple gates of the Schottky field effect device are used to form an ESD trigger and charge draining paths for protection of circuits following the ESD protection device. Both single and dual polarity ESD protection devices may be provided on an integrated circuit die for protection of input-output circuits thereof.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: June 20, 2017
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Pei-Ming Daniel Chow, Jing Zhu, Yon-Lin Kok, Steven Schell
  • Publication number: 20160372459
    Abstract: A multi-gate Schottky depletion-mode field effect transistor (FET), at least one diode and two resistors comprise a compact electrostatic discharge (ESD) protection structure. This ESD protection structure can be laid out in a smaller area than typical multiple diode ESD devices. The multi-gate FET may comprise various types of high-electron-mobility transistor (HEMT) devices, e.g., (pseudomorphic) pHEMT, (metamorphic) mHEMT, induced HEMT. The multiple gates of the Schottky field effect device are used to form an ESD trigger and charge draining paths for protection of circuits following the ESD protection device. Both single and dual polarity ESD protection devices may be provided on an integrated circuit die for protection of input-output circuits thereof.
    Type: Application
    Filed: August 29, 2016
    Publication date: December 22, 2016
    Applicant: Microchip Technology Incorporated
    Inventors: Pei-Ming Daniel Chow, Jing Zhu, Yon-Lin Kok, Steven Schell
  • Patent number: 9431390
    Abstract: A multi-gate Schottky depletion-mode field effect transistor (FET), at least one diode and two resistors comprise a compact electrostatic discharge (ESD) protection structure. This ESD protection structure can be laid out in a smaller area than typical multiple diode ESD devices. The multi-gate FET may comprise various types of high-electron-mobility transistor (HEMT) devices, e.g., (pseudomorphic) pHEMT, (metamorphic) mHEMT, induced HEMT. The multiple gates of the Schottky field effect device are used to form an ESD trigger and charge draining paths for protection of circuits following the ESD protection device. Both single and dual polarity ESD protection devices may be provided on an integrated circuit die for protection of input-output circuits thereof.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: August 30, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Pei-Ming Daniel Chow, Yon-Lin Kok, Jing Zhu, Steven Schell
  • Patent number: 9205600
    Abstract: A positioning mechanism for precisely moving a 3D printing stage in two dimensions is disclosed. The positioning mechanism consists of a first drive assembly, a second drive assembly, a moveable platform, and a stationary frame. The first and second drive assemblies each consist of a gear rack, pinion wire, and actuator. The first and second drive assemblies are configured to move the stage in orthogonal directions in a substantially horizontal plane. Both the first and second pinion wires are in direct contact with the stage as well as the frame, thereby providing an effective parallel linkage between stage and frame.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: December 8, 2015
    Assignee: NEW MATTER, INC.
    Inventors: Jeffrey Kerr, Steven Schell
  • Publication number: 20140327048
    Abstract: A multi-gate Schottky depletion-mode field effect transistor (FET), at least one diode and two resistors comprise a compact electrostatic discharge (ESD) protection structure. This ESD protection structure can be laid out in a smaller area than typical multiple diode ESD devices. The multi-gate FET may comprise various types of high-electron-mobility transistor (HEMT) devices, e.g., (pseudomorphic) pHEMT, (metamorphic) mHEMT, induced HEMT. The multiple gates of the Schottky field effect device are used to form an ESD trigger and charge draining paths for protection of circuits following the ESD protection device. Both single and dual polarity ESD protection devices may be provided on an integrated circuit die for protection of input-output circuits thereof.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 6, 2014
    Inventors: Pei-Ming Daniel Chow, Yon-Lin Kok, Jing Zhu, Steven Schell
  • Patent number: 8449692
    Abstract: Systems and methods of heliostat reflector cleaning via a vehicle in a heliostat field.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 28, 2013
    Assignee: Esolar, Inc.
    Inventors: Jason Blair, Stephen Brawner, Brian Coleman, Alan Greaney, Christian Gregory, Marc Grossman, Gregg Luconi, Carter Moursund, Ulrik Pilegaard, Steven Schell, Craig Tyner
  • Publication number: 20100206294
    Abstract: Systems and methods of heliostat reflector cleaning via a vehicle in a heliostat field.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Inventors: JASON BLAIR, Stephen Brawner, Brian Coleman, Alan Greaney, Christian Gregory, Marc Grossman, Gregg Luconi, Carter Moursund, Ulrik Pilegaard, Steven Schell, Craig Tyner
  • Publication number: 20090241939
    Abstract: Solar receivers and particularly to solar receivers having one or more cavities and optionally having absorptivity/reflectivity patterns on surfaces and methods of reflective material application.
    Type: Application
    Filed: February 20, 2009
    Publication date: October 1, 2009
    Inventors: Andrew Heap, Steven Schell, Seyed A. Ebrahimi-Sabet, Gregg Luconi, Quoc Pham, Adam Azarchs, Dan Reznik, Porter Arbogast, Craig Tyner
  • Publication number: 20050222710
    Abstract: The present application discloses a mechanical arrangement and components for reducing errors in position estimation in mobile robotic vehicles that use deduced reckoning. The arrangement provides a method for determining the weight to be carried by the driven wheels to provide increased or maximum contact force between the driven wheels and a support surface, which in turn reduces or minimizes wheel slippage and reduces or minimizes vehicle tilting. The arrangement further provides uniquely shaped rolling elements that generate reduced sideways directed forces on the vehicle, thus reducing or minimizing wheel slippage.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 6, 2005
    Inventors: Steven Schell, Joseph Brown