Patents by Inventor Thomas Edward Seidel

Thomas Edward Seidel 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).

  • Piezoresistor effects in semiconductor resistors
    Patent number: 3965453
    Abstract: In semiconductor integrated circuits, piezoresistance is recognized as a factor affecting production yield and circuit performance. Current flow in a circuit resistor is aligned with one of the <100> family of equivalent directions. When current is flowing along such a direction the change in resistance due to any combination of stress components is at a minimum. Additionally, variation of resistance due to stress and strain may be reduced by an increase of the total impurity concentration in a resistor.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: June 22, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Thomas Edward Seidel, Masakazu Shoji