Patents by Inventor Maitland Gary Graham

Maitland Gary Graham 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: 10253216
    Abstract: A barrier chemical mechanical planarization polishing composition is provided that includes suitable chemical additives. The suitable chemical additives are silicate compound and high molecular weight polymers/copolymers. There is also provided a chemical mechanical polishing method using the barrier chemical mechanical planarization polishing composition.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: April 9, 2019
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Matthias Stender, Maitland Gary Graham, Dnyanesh Chandrakant Tamboli, Xiaobo Shi
  • Publication number: 20190062598
    Abstract: Chemical mechanical polishing (CMP) compositions, methods and systems are for polishing patterned semiconductor wafers. The CMP compositions comprising an abrasive and a water soluble aluminum compound additive with a pH>7 suppress CMP stop layer (a silicon containing layer, such as silicon nitride, silicon oxide, or silicon carbide) removal rate. CMP compositions optionally contain surfactant to help wet surface; a corrosion inhibitor to provide corrosion inhibition on metal lines, vias, or trenches; and a pH adjusting agent that is used to adjust pH of the CMP polishing composition.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Applicant: Versum Materials US, LLC
    Inventors: Matthias Stender, Maitland Gary Graham
  • Patent number: 10144850
    Abstract: Chemical mechanical polishing (CMP) compositions, methods and systems are for polishing patterned semiconductor wafers. The CMP compositions comprising an abrasive and a water soluble aluminum compound additive with a pH>7 suppress CMP stop layer (a silicon containing layer, such as silicon nitride, silicon oxide, or silicon carbide) removal rate. CMP compositions optionally contain surfactant to help wet surface; a corrosion inhibitor to provide corrosion inhibition on metal lines, vias, or trenches; and a pH adjusting agent that is used to adjust pH of the CMP polishing composition.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: December 4, 2018
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Matthias Stender, Maitland Gary Graham
  • Publication number: 20180002571
    Abstract: A barrier chemical mechanical planarization polishing composition is provided that includes suitable chemical additives. The suitable chemical additives are silicate compound and high molecular weight polymers/copolymers. There is also provided a chemical mechanical polishing method using the barrier chemical mechanical planarization polishing composition.
    Type: Application
    Filed: June 22, 2017
    Publication date: January 4, 2018
    Applicant: Versum Materials US, LLC
    Inventors: Matthias Stender, Maitland Gary Graham, Dnyanesh Chandrakant Tamboli, Xiaobo Shi
  • Publication number: 20170088748
    Abstract: Chemical mechanical polishing (CMP) compositions, methods and systems are for polishing patterned semiconductor wafers. The CMP compositions comprising an abrasive and a water soluble aluminum compound additive with a pH>7 suppress CMP stop layer (a silicon containing layer, such as silicon nitride, silicon oxide, or silicon carbide) removal rate. CMP compositions optionally contain surfactant to help wet surface; a corrosion inhibitor to provide corrosion inhibition on metal lines, vias, or trenches; and a pH adjusting agent that is used to adjust pH of the CMP polishing composition.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 30, 2017
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Matthias Stender, Maitland Gary Graham
  • Patent number: 9574110
    Abstract: A barrier chemical mechanical planarization polishing composition is provided that includes suitable chemical additives. The suitable chemical additives are organic polymer molecules containing ethylene oxide repeating units having the general molecular structure of where n refers to the total numbers of the repeating unit giving the molecular weights of polyethylene oxide ranging from 100,000 to 8,000,000. There is also provided a chemical mechanical polishing method using the barrier chemical mechanical planarization polishing composition.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 21, 2017
    Assignee: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Maitland Gary Graham, James Allen Schlueter, Xiaobo Shi
  • Publication number: 20150104941
    Abstract: A barrier chemical mechanical planarization polishing composition is provided that includes suitable chemical additives. The suitable chemical additives are organic polymer molecules containing ethylene oxide repeating units having the general molecular structure of where n refers to the total numbers of the repeating unit ranging from 6,818 to 181,817; and the molecular weights of polyethylene oxide ranging from 100,000 to 8,000,000. There is also provided a chemical mechanical polishing method using the barrier chemical mechanical planarization polishing composition.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 16, 2015
    Inventors: Maitland Gary Graham, JAMES ALLEN SCHLUETER, XIAOBO SHI
  • Publication number: 20150104940
    Abstract: A barrier chemical mechanical planarization polishing composition is provided that includes the suitable chemical additives. The suitable chemical additives are organic polymer molecules containing ethylene oxide repeating units having the general molecular structure of where n refers to the total numbers of the repeating unit ranging from 6,818 to 181,817; and the molecular weights of polyethylene oxide ranged from 100,000 to 8,000,000. There is also provided a chemical mechanical polishing method using the barrier chemical mechanical planarization polishing composition.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: AIR PRODUCTS AND CHEMICALS INC.
    Inventors: Maitland Gary Graham, JAMES ALLEN SCHLUETER, XIAOBO SHI
  • Patent number: 8999193
    Abstract: Chemical-mechanical polishing (CMP) compositions containing chemical additives and methods of using the CMP compositions are disclosed. The CMP composition comprises abrasive; chemical additive; liquid carrier; optionally an oxidizing agent; a pH buffering agent and salt; a surfactant and a biocide. The CMP compositions and the methods provide enhanced removing rate for “SiC”, SiN” and “SiCxNy” films; and tunable removal selectivity for “SiC” in reference to SiO2, “SiN” in reference to SiO2, “SiC” in reference to “SiN”, or “SiCxNy” in reference to SiO2; wherein x ranges from 0.1 wt % to 55 wt %, y ranges from 0.1 wt % to 32 wt %.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 7, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, James Allen Schlueter, Maitland Gary Graham, Savka I. Stoeva, James Matthew Henry
  • Publication number: 20140099790
    Abstract: Chemical-mechanical polishing (CMP) compositions containing chemical additives and methods of using the CMP compositions are disclosed. The CMP composition comprises abrasive; chemical additive; liquid carrier; optionally an oxidizing agent; a pH buffering agent and salt; a surfactant and a biocide. The CMP compositions and the methods provide enhanced removing rate for “SiC”, SiN” and “SiCxNy” films; and tunable removal selectivity for “SiC” in reference to SiO2, “SiN” in reference to SiO2, “SiC” in reference to “SiN”, or “SiCxNy” in reference to SiO2; wherein x ranges from 0.1 wt % to 55 wt %, y ranges from 0.1 wt % to 32 wt %.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 10, 2014
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Xiaobo Shi, James Allen Schlueter, Maitland Gary Graham, Savka I. Stoeva, James Matthew Henry