Patents by Inventor Sameer Shafiq Haddad

Sameer Shafiq Haddad 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).

  • Bit by bit APDE verify for flash memory applications
    Patent number: 6122198
    Abstract: A method of erase verifying and overerase verifying an array of flash memory cells by erase verifying each memory cell bit-by-bit in a memory array, overerase verifying each memory cell bit-by-bit in the memory array after each memory cell verifies as erased and again erase verifying each memory cell bit-by-bit in the memory array after each cell overerase verifies. The threshold voltage of each memory cell is compared to the threshold voltage of a reference memory cell and an overerase correction pulse is applied to the column in which the overerased memory cell is located.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: September 19, 2000
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Sameer Shafiq Haddad, Ravi Prakash Gutala, Colin Bill