Patents by Inventor Rakesh Vallishayee

Rakesh Vallishayee 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: 9653446
    Abstract: An IC includes logic cells, selected from a standard cell library, and fill cells, configured for compatibility with the standard logic cells. The fill cells contain structures configured to obtain in-line data via non-contact electrical measurements (“NCEM”). The IC includes such NCEM-enabled fill cells configured to enable detection and/or measurement of a variety of open-circuit and short-circuit failure modes, including at least one via-open-related failure mode, one AACNT-short-related failure mode, one TS-short-related failure mode, and one AA-short-related failure mode.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: May 16, 2017
    Assignee: PDF Solutions, Inc.
    Inventors: Stephen Lam, Dennis Ciplickas, Tomasz Brozek, Jeremy Cheng, Simone Comensoli, Indranil De, Kelvin Doong, Hans Eisenmann, Timothy Fiscus, Jonathan Haigh, Christopher Hess, John Kibarian, Sherry Lee, Marci Liao, Sheng-Che Lin, Hideki Matsuhashi, Kimon Michaels, Conor O'Sullivan, Markus Rauscher, Vyacheslav Rovner, Andrzej Strojwas, Marcin Strojwas, Carl Taylor, Rakesh Vallishayee, Larg Weiland, Nobuharu Yokoyama
  • Patent number: 9646961
    Abstract: An IC includes logic cells, selected from a standard cell library, and fill cells, configured for compatibility with the standard logic cells. The fill cells contain structures configured to obtain in-line data via non-contact electrical measurements (“NCEM”). The IC includes such NCEM-enabled fill cells configured to enable detection and/or measurement of a variety of open-circuit and short-circuit failure modes, including at least one via-open-related failure mode, one AACNT-short-related failure mode, one TS-short-related failure mode, and one metal-short-related failure mode.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: May 9, 2017
    Assignee: PDF Solutions, Inc.
    Inventors: Stephen Lam, Dennis Ciplickas, Tomasz Brozek, Jeremy Cheng, Simone Comensoli, Indranil De, Kelvin Doong, Hans Eisenmann, Timothy Fiscus, Jonathan Haigh, Christopher Hess, John Kibarian, Sherry Lee, Marci Liao, Sheng-Che Lin, Hideki Matsuhashi, Kimon Michaels, Conor O'Sullivan, Markus Rauscher, Vyacheslav Rovner, Andrzej Strojwas, Marcin Strojwas, Carl Taylor, Rakesh Vallishayee, Larg Weiland, Nobuharu Yokoyama
  • Patent number: 9627370
    Abstract: An IC includes logic cells, selected from a standard cell library, and fill cells, configured for compatibility with the standard logic cells. The fill cells contain structures configured to obtain in-line data via non-contact electrical measurements (“NCEM”). The IC includes such NCEM-enabled fill cells configured to enable detection and/or measurement of a variety of open-circuit and short-circuit failure modes, including at least one via-open-related failure mode, one GATE-short-related failure mode, one GATECNT-short-related failure mode, and one TS-short-related failure mode.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: April 18, 2017
    Assignee: PDF Solutions, Inc.
    Inventors: Stephen Lam, Dennis Ciplickas, Tomasz Brozek, Jeremy Cheng, Simone Comensoli, Indranil De, Kelvin Doong, Hans Eisenmann, Timothy Fiscus, Jonathan Haigh, Christopher Hess, John Kibarian, Sherry Lee, Marci Liao, Sheng-Che Lin, Hideki Matsuhashi, Kimon Michaels, Conor O'Sullivan, Markus Rauscher, Vyacheslav Rovner, Andrzej Strojwas, Marcin Strojwas, Carl Taylor, Rakesh Vallishayee, Larg Weiland, Nobuharu Yokoyama
  • Patent number: 9627371
    Abstract: An IC includes logic cells, selected from a standard cell library, and fill cells, configured for compatibility with the standard logic cells. The fill cells contain structures configured to obtain in-line data via non-contact electrical measurements (“NCEM”). The IC includes such NCEM-enabled fill cells configured to enable detection and/or measurement of a variety of open-circuit and short-circuit failure modes, including at least one via-open-related failure mode, one GATE-short-related failure mode, one GATECNT-short-related failure mode, and one AA-short-related failure mode.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: April 18, 2017
    Assignee: PDF Solutions, Inc.
    Inventors: Stephen Lam, Dennis Ciplickas, Tomasz Brozek, Jeremy Cheng, Simone Comensoli, Indranil De, Kelvin Doong, Hans Eisenmann, Timothy Fiscus, Jonathan Haigh, Christopher Hess, John Kibarian, Sherry Lee, Marci Liao, Sheng-Che Lin, Hideki Matsuhashi, Kimon Michaels, Conor O'Sullivan, Markus Rauscher, Vyacheslav Rovner, Andrzej Strojwas, Marcin Strojwas, Carl Taylor, Rakesh Vallishayee, Larg Weiland, Nobuharu Yokoyama
  • Patent number: 7487474
    Abstract: An integrated circuit is designed to improve yield when manufacturing the integrated circuit, by obtaining a design element from a set of design elements used in designing integrated circuits. A variant design element is created based on the obtained design element, where a feature of the obtained design element is modified to create the variant design element. A yield to area ratio for the variant design element is determined. If the yield to area ratio of the variant design element is greater than a yield to area ratio of the obtained design element, the variant design element is retained to be used in designing the integrated circuit.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: February 3, 2009
    Assignee: PDF Solutions, Inc.
    Inventors: Dennis Ciplickas, Joe Davis, Christopher Hess, Sherry Lee, Enrico Malavasi, Abdulmobeen Mohammad, Ratibor Radojcic, Brian Stine, Rakesh Vallishayee, Stefano Zanella, Nicola Dragone, Carlo Guardiani, Michel Quarantelli, Stefano Tonello, Joshi Aniruddha
  • Patent number: 7434197
    Abstract: A hot spot is identified within a mask layout design. The hot spot represents a local region of the mask layout design having one or more feature geometries susceptible to producing one or more fabrication deficiencies. A test structure is generated for the identified hot spot. The test structure is defined to emulate the one or more feature geometries susceptible to producing the one or more fabrication deficiencies. The test structure is fabricated on a test wafer using specified fabrication processes. The as-fabricated test structure is examined to identify one or more adjustments to either the feature geometries of the hot spot of the mask layout design or the specified fabrication processes, wherein the identified adjustments are capable of reducing the fabrication deficiencies.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: October 7, 2008
    Assignee: PDF Solutions, Inc.
    Inventors: Christoph Dolainsky, Jonathan O. Burrows, Dennis Ciplickas, Joseph C. Davis, Rakesh Vallishayee, Howard Read, Larg. H. Weiland, Christopher Hess
  • Publication number: 20060101355
    Abstract: An integrated circuit is designed to improve yield when manufacturing the integrated circuit, by obtaining a design element from a set of design elements used in designing integrated circuits. A variant design element is created based on the obtained design element, where a feature of the obtained design element is modified to create the variant design element. A yield to area ratio for the variant design element is determined.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 11, 2006
    Applicant: PDF Solutions, Inc.
    Inventors: Dennis Ciplickas, Joe Davis, Christopher Hess, Sherry Lee, Enrico Malavasi, Abdulmobeen Mohammad, Ratibor Radojcic, Brian Stine, Rakesh Vallishayee, Stefano Zanella, Nicola Dragone, Carlo Guardiani, Michel Quarantelli, Stefano Tonello, Joshi Aniruddha