Patents by Inventor Richard S. List

Richard S. List 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).

  • Process scheme to form controlled airgaps between interconnect lines to reduce capacitance
    Patent number: 6204200
    Abstract: A process for forming controlled airgaps (22) between metal lines (16). A two-step high density plasma (HDP) chemical vapor deposition (CVD) process is used to form the silicon dioxide dielectric layer (20) with the controlled airgaps (22). The first step involves a high gas flow and low substrate bias conditions to deposit silicon dioxide with a high deposition to sputter etch ratio. The second step uses a low gas flow and high substrate bias condition to increase the sputter component of the deposition.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: March 20, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Benjamin P. Shieh, Somnath S. Nag, Richard S. List
  • Woodworking tool for preparing a wood surface for finishing
    Patent number: 5850657
    Abstract: A woodworking tool includes an elongate hand grip. A scraper element is provided at one end of the hand grip and a spreader element at the other end of the hand grip. The spreader element is substantially more flexible than the scraper element so that each may alternatingly be used to prepare a wood surface for finishing by reversing the relative positions of the elements within the hand of the user.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: December 22, 1998
    Assignee: Hyde Tools
    Inventors: Richard S. List, Andre J. Lazure, Mark S. Corriveau, Steven J. Corron