Patents by Inventor Hugh Li

Hugh Li 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: 20240140854
    Abstract: A silicate-based glass composition includes 15-65 wt. % SiO2, 2.5-25 wt. % MgO, 1-30 wt. % P2O5, and 15-50 wt. % CaO, such that the composition has a hydrolytic resistance of glass grains (HGB) of at most 3, when measured by International Organization for Standardization section 719 (ISO 719) and forms a bioactive crystalline phase in a simulated body fluid.
    Type: Application
    Filed: March 1, 2022
    Publication date: May 2, 2024
    Inventors: Qiang Fu, Aize Li, Hugh Michael McMahon
  • Patent number: 7300480
    Abstract: The solution is useful for removing a barrier material from a semiconductor substrate. The solution comprises, by weight percent, 0.01 to 25 oxidizer, 0 to 15 inhibitor for a nonferrous metal, 0 to 15 abrasive, 0 to 20 complexing agent for the nonferrous metal, 0.01 to 12 barrier removal agent and balance water. The barrier removal agent is selected from the group comprising imine derivative compounds, hydrazine derivative compounds and mixtures thereof.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: November 27, 2007
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: Jinru Bian, Kai Hu, Hugh Li, Zhendong Liu, John Quanci, Matthew R. VanHanehem
  • Publication number: 20050066585
    Abstract: The solution is useful for removing a barrier material from a semiconductor substrate. The solution comprises, by weight percent, 0.01 to 25 oxidizer, 0 to 15 inhibitor for a nonferrous metal, 0 to 15 abrasive, 0 to 20 complexing agent for the nonferrous metal, 0.01 to 12 barrier removal agent and balance water. The barrier removal agent is selected from the group comprising imine derivative compounds, hydrazine derivative compounds and mixtures thereof.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 31, 2005
    Inventors: Jinru Bian, Kai Hu, Hugh Li, Zhendong Liu, John Quanci, Matthew VanHanehem
  • Patent number: 6610601
    Abstract: A method is described comprising removing an oxide from a surface and then commencing application of a passivation layer to the surface within 5 seconds of the oxide removal. The surface may be a copper surface which may further comprise a bonding pad surface. Removing the oxide may further comprise applying a solution comprising citric acid or hydrochloric acid. Applying the passivation layer may further comprise applying a solution comprising a member of the azole family where the azole family member may further comprise BTA. The method may also further comprise completely applying the passivation layer 35 seconds after commencing its application.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: August 26, 2003
    Assignee: Lam Research Corporation
    Inventors: Hugh Li, Diane J. Hymes
  • Publication number: 20020058417
    Abstract: A method is described comprising removing an oxide from a surface and then commencing application of a passivation layer to the surface within 5 seconds of the oxide removal. The surface may be a copper surface which may further comprise a bonding pad surface. Removing the oxide may further comprise applying a solution comprising citric acid or hydrochloric acid. Applying the passivation layer may further comprise applying a solution comprising a member of the azole family where the azole family member may further comprise BTA. The method may also further comprise completely applying the passivation layer 35 seconds after commencing its application.
    Type: Application
    Filed: January 4, 2002
    Publication date: May 16, 2002
    Inventors: Hugh Li, Diane J. Hymes
  • Patent number: 6358847
    Abstract: A method is described comprising removing an oxide from a surface and then commencing application of a passivation layer to the surface within 5 seconds of the oxide removal. The surface may be a copper surface which may further comprise a bonding pad surface. Removing the oxide may further comprise applying a solution comprising citric acid or hydrochloric acid. Applying the passivation layer may further comprise applying a solution comprising a member of the azole family where the azole family member may further comprise BTA. The method may also further comprise completely applying the passivation layer 35 seconds after commencing its application.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: March 19, 2002
    Assignee: Lam Research Corporation
    Inventors: Hugh Li, Diane J. Hymes