Patents by Inventor I-Hwa Midey Chang-Mateu

I-Hwa Midey Chang-Mateu 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: 10518120
    Abstract: A fire extinguishing concentrate contains water, a first surfactant which is an anionic surfactant, a second surfactant which is an amphoteric surfactant, a third surfactant which is selected from an anionic surfactant and an amphoteric surfactant, the third surfactant being different from the first and second surfactants, and water, along with optional ingredients. The concentrate may be combined with water to provide a fire extinguishing composition that may be applied to a fire for a time and in an amount effective to extinguish the fire.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: December 31, 2019
    Assignee: Hydraᴺᵀ International Trading Co., Ltd.
    Inventors: Chien Nan Pai, I-Hwa Midey Chang-Mateu
  • Publication number: 20170056698
    Abstract: A fire extinguishing concentrate contains water, a first surfactant which is an anionic surfactant, a second surfactant which is an amphoteric surfactant, a third surfactant which is selected from an anionic surfactant and an amphoteric surfactant, the third surfactant being different from the first and second surfactants, and water, along with optional ingredients. The concentrate may be combined with water to provide a fire extinguishing composition that may be applied to a fire for a time and in an amount effective to extinguish the fire.
    Type: Application
    Filed: February 17, 2015
    Publication date: March 2, 2017
    Applicant: HYDRANT INTERNATIONAL TRADING CO., LTD.
    Inventors: Chien Nan Pai, I-Hwa Midey Chang-Mateu
  • Patent number: 8158714
    Abstract: Disclosed herein is a method that includes mixing opacifying agent particles with a thickening agent to form a first mixture; the mixing being conducted at a shear rate of about 10 to about 2,000 sec?1; the first mixture having a viscosity of greater than or equal to about 70 Krebs units; and mixing a polymer latex binder with the first mixture to form a coating composition; the polymer latex binder including a copolymer that comprises phosphorus containing repeat units and an acrylate polymer.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: April 17, 2012
    Assignees: Rohm and Haas Company, Masco Corporation
    Inventors: Ritesh Ravi Nair, Tek Wayne Woo, Catherine A. Finegan, Ozzie M. Pressley, John William Hook, III, Wei Zhang, I-Hwa Midey Chang-Mateu
  • Patent number: 7763746
    Abstract: The present invention provides a method for minimizing the decomposition of cyanohydrins in exothermic chemical reactions involving cyanohydrins. The method comprises providing a reaction medium and reactants to a tubular reactor having internal mixing means, mixing the reaction medium and reactants to form a homogenous reaction mixture, removing heat from the reaction process and reacting the reactants to produce a mixed product having a bulk temperature. The method may further comprise cooling the reaction medium to a temperature from 1-10° C. cooler than the bulk temperature of the mixed product prior to providing the reaction medium to the tubular reactor.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: July 27, 2010
    Assignee: Rohm and Haas Company
    Inventors: Paul Benjamin Schladenhauffen, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Robert Wilczynski, Donald Zolotorofe
  • Publication number: 20090326135
    Abstract: Disclosed herein is a method that includes mixing opacifying agent particles with a thickening agent to form a first mixture; the mixing being conducted at a shear rate of about 10 to about 2,000 sec?1; the first mixture having a viscosity of greater than or equal to about 70 Krebs units; and mixing a polymer latex binder with the first mixture to form a coating composition; the polymer latex binder including a copolymer that comprises phosphorus containing repeat units and an acrylate polymer.
    Type: Application
    Filed: December 23, 2008
    Publication date: December 31, 2009
    Applicants: ROHM AND HAAS, MASCO CORPORATION
    Inventors: Ritesh Ravi Nair, Tek Wayne Woo, Catherine A. Finegan, Ozzle M. Pressley, John William Hook, III, Wei Zhang, I-Hwa Midey Chang-Mateu
  • Patent number: 7582790
    Abstract: The present invention provides a method for minimizing the decomposition of cyanohydrins in exothermic chemical reactions involving cyanohydrins. The method comprises providing a reaction medium and reactants to a tubular reactor having internal mixing means, mixing the reaction medium and reactants to form a homogenous reaction mixture, removing heat from the reaction process and reacting the reactants to produce a mixed product having a bulk temperature. The method may further comprise cooling the reaction medium to a temperature from 1-10° C. cooler than the bulk temperature of the mixed product prior to providing the reaction medium to the tubular reactor.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: September 1, 2009
    Assignee: Rohm and Haas Company
    Inventors: Paul Benjamin Schladenhauffen, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Robert Wilczynski, Donald Zolotorofe
  • Publication number: 20090082587
    Abstract: The present invention provides a method for minimizing the decomposition of cyanohydrins in exothermic chemical reactions involving cyanohydrins. The method comprises providing a reaction medium and reactants to a tubular reactor having internal mixing means, mixing the reaction medium and reactants to form a homogenous reaction mixture, removing heat from the reaction process and reacting the reactants to produce a mixed product having a bulk temperature. The method may further comprise cooling the reaction medium to a temperature from 1-10° C. cooler than the bulk temperature of the mixed product prior to providing the reaction medium to the tubular reactor.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 26, 2009
    Inventors: Paul Benjamin Schladenhauffen, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Robert Wilczynski, Donald Zolotorofe
  • Patent number: 6610177
    Abstract: A high yield process for the production of methyl methacrylate or methacrylic acid and an apparatus for increasing the yield in a process for the production of methyl methacrylate or methacrylic acid are disclosed.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: August 26, 2003
    Assignee: Rohm and Haas Company
    Inventors: Chorng-Shyuan Tsay, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Heather Granzin Thompson, Diana Elaine Chase
  • Patent number: 6545176
    Abstract: A high yield process for the production of methyl methacrylate or methacrylic acid and an apparatus for increasing the yield in a process for the production of methyl methacrylate or methacrylic acid are disclosed.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 8, 2003
    Assignee: Rohm and Haas Company
    Inventors: Chorng-Shyuan Tsay, Makarand Dattatraya Phadke, Abraham Benderly, I-Hwa Midey Chang-Mateu, Nicole Rendon Koegel, Heather Granzin Thompson, Diana Elaine Chase
  • Publication number: 20020188153
    Abstract: A high yield process for the production of methyl methacrylate or methacrylic acid and an apparatus for increasing the yield in a process for the production of methyl methacrylate or methacrylic acid are disclosed.
    Type: Application
    Filed: July 29, 2002
    Publication date: December 12, 2002
    Inventors: Chorng-Shyuan Tsay, Michael Stanley DeCourcy, I-Hwa Midey Chang-Mateu, Heather Granzin Thompson, Diana Elaine Chase
  • Patent number: 6353087
    Abstract: This invention relates to a process for stripping polymer reaction compositions. The process reduces gel in the polymer reaction composition by adjusting the pH of the polymer to from 7 to 11 prior to stripping and maintaining the adjusted pH during stripping, maintaining the temperature of the polymer at from 30° C. to 70° C. during stripping, utilizing a continuous stripping operation, or combinations thereof.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: March 5, 2002
    Assignee: Rohm and Haas Company
    Inventors: I-Hwa Midey Chang-Mateu, James Michael Lipovsky, Dawn Marie McFadden, Richard Shu-Hua Wu