Patents by Inventor Saifi Usmani

Saifi Usmani 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: 10011741
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at least a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: July 3, 2018
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Publication number: 20160177134
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at least a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Application
    Filed: March 2, 2016
    Publication date: June 23, 2016
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Patent number: 9305476
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at least a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: April 5, 2016
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Publication number: 20150247063
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at least a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Application
    Filed: May 12, 2015
    Publication date: September 3, 2015
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Patent number: 9062230
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at lease a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: June 23, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steve Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Publication number: 20140374378
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at lease a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Patent number: 8859428
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at lease a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 14, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Theresa Schwartz, Laura Ledenbach, Steve Charles Winchester, Saifi Usmani, John Anthony Marsella, Martin Kamau Ngigi Mungai
  • Publication number: 20140110626
    Abstract: Methods for removing, reducing or treating the trace metal contaminants and the smaller fine sized cerium oxide particles from cerium oxide particles, cerium oxide slurry or chemical mechanical polishing (CMP) compositions for Shallow Trench Isolation (STI) process are applied. The treated chemical mechanical polishing (CMP) compositions, or the CMP polishing compositions prepared by using the treated cerium oxide particles or the treated cerium oxide slurry are used to polish substrate that contains at lease a surface comprising silicon dioxide film for STI (Shallow trench isolation) processing and applications. The reduced nano-sized particle related defects have been observed due to the reduced trace metal ion contaminants and reduced very smaller fine cerium oxide particles in the Shallow Trench Isolation (STI) CMP polishing.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 24, 2014
    Applicant: AIR PRODUCTS AND CHEMICALS INC.
    Inventors: Xiaobo Shi, John Edward Quincy Hughes, Hongjun Zhou, Daniel Hernandez Castillo, II, Jae Ouk Choo, James Allen Schlueter, Jo-Ann Teresa Schwartz, Laura Ledenbach, Steven Charles Winchester, Saifi Usmani, John Anthony Marsella
  • Publication number: 20110165777
    Abstract: A composition and associated method for the chemical mechanical planarization (CMP) of metal substrates on semiconductor wafers are described. The composition contains a nonionic fluorocarbon surfactant and a per-type oxidizer (e.g., hydrogen peroxide). The composition and associated method are effective in controlling removal rates of low-k films during copper CMP and provide for tune-ability in removal rates of low-k films in relation to removal rates of copper, tantalum, and oxide films.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 7, 2011
    Applicant: DuPont Air Products Nanomaterials LLC
    Inventors: Junaid Ahmed Siddiqui, Rachel Dianne McConnell, Saifi Usmani
  • Patent number: 7915071
    Abstract: A method and associated composition for chemical mechanical planarization of a chalcogenide-containing substrate (e.g., germanium/antimony/tellurium (GST)-containing substrate) are described. The composition and method afford low defect levels (e.g., scratches incurred during polishing) as well as low dishing and local erosion levels on the chalcogenide-containing substrate during CMP processing.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: March 29, 2011
    Assignee: DuPont Air Products Nanomaterials, LLC
    Inventors: Junaid Ahmed Siddiqui, Saifi Usmani
  • Patent number: 7579279
    Abstract: A method for processing semiconductor wafers is disclosed. A solution is applied to a semiconductor wafer to prevent dendrites and electrolytic reactions at the surface of metal interconnects. The solution can be applied during a CMP process or during a post CMP cleaning process. The solution may include a surfactant and a corrosion inhibitor. In one embodiment, the concentration of the surfactant in the solution is less than approximately one percent by weight and the concentration of the corrosion inhibitor in the solution is less than approximately one percent by weight. The solution may also include a solvent and a cosolvent. In an alternate embodiment, the solution includes a solvent and a cosolvent without the surfactant and corrosion inhibitor. In one embodiment, the CMP process and post CMP cleaning process can be performed in the presence of light having a wavelength of less than approximately one micron.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: August 25, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: John C. Flake, Kevin E. Cooper, Saifi Usmani
  • Publication number: 20090057661
    Abstract: A method and associated composition for chemical mechanical planarization of a chalcogenide-containing substrate (e.g., germanium/antimony/tellurium (GST)-containing substrate) are described. The composition and method afford low defect levels (e.g., scratches incurred during polishing) as well as low dishing and local erosion levels on the chalcogenide-containing substrate during CMP processing.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 5, 2009
    Applicant: DUPONT AIR PRODUCTS NANOMATERIALS LLC
    Inventors: Junaid Ahmed Siddiqui, Saifi Usmani
  • Publication number: 20080149884
    Abstract: A composition and associated method for the chemical mechanical planarization (CMP) of metal substrates on semiconductor wafers are described. The composition contains a nonionic fluorocarbon surfactant and a per-type oxidizer (e.g., hydrogen peroxide). The composition and associated method are effective in controlling removal rates of low-k films during copper CMP and provide for tune-ability in removal rates of low-k films in relation to removal rates of copper, tantalum, and oxide films.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Junaid Ahmed Siddiqui, Rachel Dianne McConnell, Saifi Usmani
  • Publication number: 20080148652
    Abstract: A composition and associated method for chemical mechanical planarization of a copper-containing substrate are described and which afford low defectivity levels on copper during copper CMP processing. The composition comprises a colloidal silica that is substantially free of soluble polymeric silicates.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Junaid Ahmed Siddiqui, Rachel Dianne McConnell, Saifi Usmani
  • Publication number: 20080038994
    Abstract: A method for processing semiconductor wafers is disclosed. A solution is applied to a semiconductor wafer to prevent dendrites and electrolytic reactions at the surface of metal interconnects. The solution can be applied during a CMP process or during a post CMP cleaning process. The solution may include a surfactant and a corrosion inhibitor. In one embodiment, the concentration of the surfactant in the solution is less than approximately one percent by weight and the concentration of the corrosion inhibitor in the solution is less than approximately one percent by weight. The solution may also include a solvent and a cosolvent. In an alternate embodiment, the solution includes a solvent and a cosolvent without the surfactant and corrosion inhibitor. In one embodiment, the CMP process and post CMP cleaning process can be performed in the presence of light having a wavelength of less than approximately one micron.
    Type: Application
    Filed: February 1, 2007
    Publication date: February 14, 2008
    Inventors: John Flake, Kevin Cooper, Saifi Usmani
  • Patent number: 7188630
    Abstract: A method for processing semiconductor wafers is disclosed. A solution is applied to a semiconductor wafer to prevent dendrites and electrolytic reactions at the surface of metal interconnects. The solution can be applied during a CMP process or during a post CMP cleaning process. The solution may include a surfactant and a corrosion inhibitor. In one embodiment, the concentration of the surfactant in the solution is less than approximately one percent by weight and the concentration of the corrosion inhibitor in the solution is less than approximately one percent by weight. The solution may also include a solvent and a cosolvent. In an alternate embodiment, the solution includes a solvent and a cosolvent without the surfactant and corrosion inhibitor. In one embodiment, the CMP process and post CMP cleaning process can be performed in the presence of light having a wavelength of less than approximately one micron.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: March 13, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: John C. Flake, Kevin E. Cooper, Saifi Usmani
  • Publication number: 20050194563
    Abstract: A composition and associated method for chemical mechanical planarization (or other polishing) are described. The composition comprises an abrasive and a tricine-type or bicine-type compound. The composition possesses high selectivities for removal of copper in relation to tantalum and dielectric materials whilst minimizing local dishing and erosion effects in CMP. The composition may further comprise an oxidizing agent in which case the composition is particularly useful in conjunction with the associated method for metal CMP applications (e.g., copper CMP).
    Type: Application
    Filed: January 10, 2005
    Publication date: September 8, 2005
    Inventors: Junaid Siddiqui, Timothy Compton, Bin Hu, Robin Richards, Saifi Usmani
  • Publication number: 20050076579
    Abstract: A composition and associated method for chemical mechanical planarization (or other polishing) are described. The composition comprises an abrasive and a tricine-type or bicine-type compound. The composition possesses high selectivities for removal of copper in relation to tantalum and dielectric materials whilst minimizing local dishing and erosion effects in CMP. The composition may further comprise an oxidizing agent in which case the composition is particularly useful in conjunction with the associated method for metal CMP applications (e.g., copper CMP).
    Type: Application
    Filed: October 10, 2003
    Publication date: April 14, 2005
    Inventors: Junaid Siddiqui, Timothy Compton, Bin Hu, Robin Richards, Saifi Usmani
  • Publication number: 20040224521
    Abstract: A method for processing semiconductor wafers is disclosed. A solution is applied to a semiconductor wafer to prevent dendrites and electrolytic reactions at the surface of metal interconnects. The solution can be applied during a CMP process or during a post CMP cleaning process. The solution may include a surfactant and a corrosion inhibitor. In one embodiment, the concentration of the surfactant in the solution is less than approximately one percent by weight and the concentration of the corrosion inhibitor in the solution is less than approximately one percent by weight. The solution may also include a solvent and a cosolvent. In an alternate embodiment, the solution includes a solvent and a cosolvent without the surfactant and corrosion inhibitor. In one embodiment, the CMP process and post CMP cleaning process can be performed in the presence of light having a wavelength of less than approximately one micron.
    Type: Application
    Filed: May 7, 2003
    Publication date: November 11, 2004
    Inventors: John C. Flake, Kevin E. Cooper, Saifi Usmani