Patents by Inventor Dutta Saurabh Chowdhury

Dutta Saurabh Chowdhury 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: 7323377
    Abstract: In one embodiment, a method of fabricating an integrated circuit includes the steps of: (i) forming composite spacers on sidewalls of a transistor gate, each of the composite spacers comprising a first liner having a stepped portion and a disposable spacer material over the stepped portion; (ii) forming a source/drain region by performing ion implantation through a portion of the first liner over the source/drain region; (iii) replacing the disposable spacer material with a second liner formed over the first liner after forming the source/drain region; (iv) forming a pre-metal dielectric over the second liner; and (v) forming a self-aligned contact through the pre-metal dielectric. Among other advantages, the method allows for an increased contact area for a self-aligned contact.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: January 29, 2008
    Assignee: Cypress Semiconductor Corporation
    Inventors: Mehran Sedigh, Manuj Rathor, Alain P. Blosse, Dutta Saurabh Chowdhury