Patents by Inventor Subramanyam A. Iyer

Subramanyam A. Iyer 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).

  • Publication number: 20230422219
    Abstract: A method performed by a Citizens Broadband Radio Service (CBRS) device (CBSD), may comprise, generating a grant request message comprising information on a number of grants and information on operation parameters. Each of the operation parameters is associated with a desired channel identified based on a list of desired channels. The method may comprise sending the grant request message to a Spectrum Access System (SAS).
    Type: Application
    Filed: August 25, 2023
    Publication date: December 28, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ritik Prasad MATHUR, Mohit Agarwal, Satya Kumar Vankayala, Akhil Polamarasetty, Jayasuryan Venkita Subramanyam Iyer, Seungil Yoon
  • Publication number: 20070000519
    Abstract: A method of removing post-etch residue from a patterned low-k dielectric layer is disclosed. The low-k dielectric layer preferably comprises a porous silicon oxide-based material with the post-etch residue thereon. The post-etch residue is a polymer, a polymer contaminated with an inorganic material, an anti-reflective coating and/or a combination thereof.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Gunilla Jacobson, Subramanyam Iyer
  • Publication number: 20060108067
    Abstract: Radiant energy may be applied to a photochemically susceptible etching or conditioning solution to enable precise control of the removal of material or alteration of the top surface of a wafer during the fabrication of semiconductor integrated circuits. A particular condition may be detected during the course of photoactivated generation of free radicals or molecular activation to control the further generation of said species by controlling the radiant energy exposure of a wafer.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 25, 2006
    Inventors: Subramanyam Iyer, Justin Brask, Vijayakumar Ramachandrarao
  • Patent number: 7049053
    Abstract: Polymer aggregates in a photoresist layer may be dissolved or reduced in dimension by treatment with supercritical carbon dioxide. The supercritical carbon dioxide may be used before and/or after development of the photoresist. The SCCO2 treatment causes swelling of the photoresist and may allow polymer aggregates in the photoresist to be dissolved. Controlled release of the carbon dioxide de-swells the photoresist, resulting in reduced line edge roughness of openings in the photoresist and reduced resistance of metal lines formed in the openings.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: May 23, 2006
    Assignee: Intel Corporation
    Inventors: Vijayakumar Ramachandrarao, Hyun-Mog Park, Subramanyam Iyer, Bob Turkot
  • Publication number: 20060102204
    Abstract: A method for cleaning a substrate containing a micro-feature having a residue thereon. The method includes treating the substrate with a supercritical carbon dioxide cleaning solution containing a peroxide to remove the residue from the micro-feature, where the supercritical carbon dioxide cleaning solution is maintained at a temperature between about 35° C. and about 80° C. According an embodiment of the invention, the supercritical carbon dioxide cleaning solution can further contain ozone. According to another embodiment of the invention, the substrate can be pre-treated with an ozone processing environment.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 18, 2006
    Inventors: Gunilla Jacobson, Bentley Palmer, Shan Clark, Vijayakumar Ramachandrarao, Subramanyam Iyer, Robert Turkot
  • Patent number: 7018938
    Abstract: Radiant energy may be applied to a photochemically susceptible etching or conditioning solution to enable precise control of the removal of material or alteration of the top surface of a wafer during the fabrication of semiconductor integrated circuits. A particular condition may be detected during the course of photoactivated generation of free radicals or molecular activation to control the further generation of said species by controlling the radiant energy exposure of a wafer.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: March 28, 2006
    Assignee: Intel Corporation
    Inventors: Subramanyam A. Iyer, Justin K. Brask, Vijayakumar S. Ramachandrarao
  • Publication number: 20040253550
    Abstract: Polymer aggregates in a photoresist layer may be dissolved or reduced in dimension by treatment with supercritical carbon dioxide. The supercritical carbon dioxide may be used before and/or after development of the photoresist. The SCCO2 treatment causes swelling of the photoresist and may allow polymer aggregates in the photoresist to be dissolved. Controlled release of the carbon dioxide de-swells the photoresist, resulting in reduced line edge roughness of openings in the photoresist and reduced resistance of metal lines formed in the openings.
    Type: Application
    Filed: June 11, 2003
    Publication date: December 16, 2004
    Inventors: Vijayakumar Ramachandrarao, Hyun-Mog Park, Subramanyam Iyer, Bob Turkot
  • Publication number: 20040134885
    Abstract: Liquid phase co-solvent(s) may be combined with supercritical carbon dioxide for more effective use of wet chemistries for cleaning and etching applications in semiconductor fabrication technologies. Because of the use of the two-phase system, more effective solvents, for example that may not be completely soluble in supercritical carbon dioxide, may be utilized, and the benefits of both the supercritical carbon dioxide gas-like phase and the liquid co-solvent may be achieved, in some cases. The efficacy of supercritical carbon dioxide cleaning can be enhanced by repetition of the etch/clean steps on the substrate, sometimes in conjunction with intervening rinse steps.
    Type: Application
    Filed: January 14, 2003
    Publication date: July 15, 2004
    Inventors: Subramanyam A. Iyer, Vijayakumar S. Ramachandrarao, Robert B. Turkot
  • Publication number: 20040097076
    Abstract: Radiant energy may be applied to a photochemically susceptible etching or conditioning solution to enable precise control of the removal of material or alteration of the top surface of a wafer during the fabrication of semiconductor integrated circuits. A particular condition may be detected during the course of photoactivated generation of free radicals or molecular activation to control the further generation of said species by controlling the radiant energy exposure of a wafer.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 20, 2004
    Inventors: Subramanyam A. Iyer, Justin K. Brask, Vijayakumar S. Ramachandrarao