Patents by Inventor Wen Teh Chang

Wen Teh Chang 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: 9305748
    Abstract: Etch rate distributions are captured at a succession of hardware tilt angles of the RF source power applicator relative to the workpiece and their non-uniformities computed, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset ?? in tilt angle ? between the non-uniformity functions of the two plasma reactors is detected. The two plasma reactors are then matched by performing a hardware tilt in one of them through a tilt angle equal to the offset ??.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: April 5, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Gaurav Saraf, Xiawan Yang, Farid Abooameri, Wen Teh Chang, Anisul H. Khan, Bradley Scott Hersch
  • Patent number: 9184021
    Abstract: Etch rate distribution non-uniformities are predicted for a succession of hardware tilt angles of the RF source applicator relative to the workpiece, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset ?? in tilt angle ? between the non-uniformity functions of the two plasma reactors is detected. The two reactors are then matched by performing a hardware tilt in one of them through a tilt angle equal to the offset ??.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: November 10, 2015
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Gaurav Saraf, Xiawan Yang, Farid Abooameri, Wen Teh Chang, Anisul H. Khan, Bradley Scott Hersch
  • Publication number: 20150096959
    Abstract: Etch rate distributions are captured at a succession of hardware tilt angles of the RF source power applicator relative to the workpiece and their non-uniformities computed, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset ?? in tilt angle ? between the non-uniformity functions of the two plasma reactors is detected. The two plasma reactors are then matched by performing a hardware tilt in one of them through a tilt angle equal to the offset ??.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 9, 2015
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Gaurav Saraf, Xiawan Yang, Farid Abooameri, Wen Teh Chang, Anisul H Khan, Bradley Scott Hersch
  • Publication number: 20150099314
    Abstract: Etch rate distribution non-uniformities are predicted for a succession of hardware tilt angles of the RF source applicator relative to the workpiece, and the behavior is modeled as a non-uniformity function for each one of at least two plasma reactors. An offset ?? in tilt angle ? between the non-uniformity functions of the two plasma reactors is detected. The two reactors are then matched by performing a hardware tilt in one of them through a tilt angle equal to the offset ??.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 9, 2015
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Gaurav Saraf, Xiawan Yang, Farid Abooameri, Wen Teh Chang, Anisul H. Khan, Bradley Scott Hersch
  • Publication number: 20140037548
    Abstract: Provided herein are methods for treating or preventing pulmonary fibrosis in subjects suffering from diffuse parenchymal lung diseases using selective active-site mTOR inhibitors.
    Type: Application
    Filed: April 21, 2013
    Publication date: February 6, 2014
    Applicant: The Board of Trustees of the Leland Standford Junior University
    Inventors: Glenn D. Rosen, Wen-Teh Chang
  • Publication number: 20110319405
    Abstract: Embodiments are related to new uses for selective active-site mTOR inhibitors in treating or preventing pulmonary fibrosis in diffuse parenchymal lung disease (DPLD) patients, such as a DPLD of environmental cause, a collagen vascular disease (e.g., scleroderma and rheumatoid arthritis), an idiopathic interstitial pneumonia (e.g., idiopathic pulmonary fibrosis and nonspecific interstitial pneumonia), and sarcoidosis.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 29, 2011
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Glenn D. Rosen, Wen-Teh Chang
  • Patent number: 7398693
    Abstract: The present invention generally relates to methods for the rapid thermal processing (RTP) of a substrate. Embodiments of the invention include controlling a thermal process using either a real-time adaptive control algorithm or by using a control algorithm that is selected from a suite of fixed control algorithms designed for a variety of substrate types. Selection of the control algorithm is based on optical properties of the substrate measured during the thermal process. In one embodiment, a combination of control algorithms are used, wherein the majority of lamp groupings are controlled with a fixed control algorithm and a substantially smaller number of lamp zones are controlled by an adaptive control algorithm.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: July 15, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Joseph Michael Ranish, Tarpan Dixit, Dean Jennings, Balasubramanian Ramachandran, Aaron Hunter, Wolfgang Aderhold, Bruce Adams, Wen Teh Chang