Patents by Inventor Pak M. Tam

Pak M. Tam 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 for making a power MOSFET device and structure
    Patent number: 5460986
    Abstract: A method for making a stable low threshold voltage p-channel power MOSFET device having a p-type gate layer (14) includes incorporating a p-type dopant into the gate layer (14) formed over a gate oxide layer (13). The p-type dopant is incorporated within the gate layer (14) under conditions that minimize diffusion of p-type dopant through the gate oxide layer (13) into the channel regions (31, 32). The process reduces the number of process steps necessary to manufacture a power MOSFET device.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: October 24, 1995
    Assignee: Motorola, Inc.
    Inventors: Gordon Tam, Pak M. Tam