Patents by Inventor Wai-Kwong Ho

Wai-Kwong Ho 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: 8070990
    Abstract: The present invention is directed to smoke suppressants based on ammonium octamolybdate chemistry. According to this invention, the precipitation of ammonium octamolybdate in the presence of an inert mineral core produce a novel high surface area ammonium octamolybdate smoke suppressant. The high surface area significantly increases the smoke suppression performance over a standard ammonium octamolybdate. This invention is also directed to a process for making the high surface area ammonium octamolybdate smoke suppressant. The smoke suppressant of this invention is particularly suitable for smoke suppression in polyvinyl chloride (PVC) applications.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: December 6, 2011
    Assignee: J.M. Huber Corporation
    Inventors: Wai-Kwong Ho, Joseph K. Walker
  • Publication number: 20110171388
    Abstract: A coating composition comprising: (i) at least one polyepoxide; (ii) at least one polyvinyl butyral resin; (iii) a corrosion inhibiting amount of cerium phosphate; (v) phosphoric acid; (v) a water miscible organic solvent; and (vii) water; wherein the coating composition is free of hexavalent chromium.
    Type: Application
    Filed: January 5, 2011
    Publication date: July 14, 2011
    Applicant: THE SHERWIN-WILLIAMS COMPANY
    Inventors: Keith A. Rawlins, Wai-Kwong Ho, Joseph K. Walker, Charles H. Simpson, Frank K. Bonney
  • Publication number: 20110165330
    Abstract: A coating composition comprising: (i) at least one polyepoxide; (ii) at least one polyvinyl butyral resin; (iii)a corrosion inhibiting amount of cerium molybdate; (v) phosphoric acid; (v) a water miscible organic solvent ; and (vii) water; wherein the coating composition is free of hexavalent chromium.
    Type: Application
    Filed: January 5, 2011
    Publication date: July 7, 2011
    Applicant: The Sherwin-Williams Company
    Inventors: Keith A. Rawlins, Wai-Kwong Ho, Joseph K. Walker, Charles H. Simpson, Frank K. Bonney
  • Patent number: 7943698
    Abstract: An ambient temperature curing coating composition comprising the crosslinked reaction product of: (a) an amino-functional compound, wherein the amino-functional compound is a bis-silylamine of general formula: (R2)b(R1Y)aSi-Q1-NH-Q2-(NH-Q3)n-Si(YR1)a(R2)b n?0 a=3?b b=0,1,2 each Y is independently a heteroatom, selected from O, N; if Y is N, then the valency of Y is 2; if Y is O, then the valency of Y is 1; each R1 is independently a monovalent radical (e.g., hydrogen, hydrocarbon including but not limited to alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Preferably, R1 is an alkyl of 1-10 carbon atoms. Each R1 may be the same or different; R2 is a monovalent radical, and can include heteroatoms (e.g., oxygen, nitrogen, sulfur) not directly bonded to the silicon atom, including but not limited to, alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Each R2 may be the same or different.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: May 17, 2011
    Assignee: The Sherwin-Williams Company
    Inventors: Richard F. Tomko, Wai-Kwong Ho
  • Publication number: 20110031454
    Abstract: The present invention is directed to smoke suppressants based on ammonium octamolybdate chemistry. According to this invention, the precipitation of ammonium octamolybdate in the presence of an inert mineral core produce a novel high surface area ammonium octamolybdate smoke suppressant. The high surface area significantly increases the smoke suppression performance over a standard ammonium octamolybdate. This invention is also directed to a process for making the high surface area ammonium octamolybdate smoke suppressant. The smoke suppressant of this invention is particularly suitable for smoke suppression in polyvinyl chloride (PVC) applications.
    Type: Application
    Filed: November 2, 2007
    Publication date: February 10, 2011
    Applicant: The Sherwin-Williams Company
    Inventors: Wai-Kwong Ho, Joseph K. Walker
  • Publication number: 20090163645
    Abstract: An ambient temperature curing coating composition comprising the crosslinked reaction product of: (a) an amino-functional compound, wherein the amino-functional compound is a bis-silylamine of general formula: (R2)b(R1Y)aSi-Q1-NH-Q2-(NH-Q3)n-Si(YR1)a(R2)b n?0 a=3?b b=0,1,2 each Y is independently a heteroatom, selected from O, N; if Y is N, then the valency of Y is 2; if Y is O, then the valency of Y is 1; each R1 is independently a monovalent radical (e.g., hydrogen, hydrocarbon including but not limited to alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Preferably, R1 is an alkyl of 1-10 carbon atoms. Each R1 may be the same or different; R2 is a monovalent radical, and can include heteroatoms (e.g., oxygen, nitrogen, sulfur) not directly bonded to the silicon atom, including but not limited to, alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Each R2 may be the same or different.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 25, 2009
    Applicant: THE SHERWIN-WILLIAMS COMPANY
    Inventors: Richard F. Tomko, Wai-Kwong Ho
  • Patent number: 7345120
    Abstract: An acrylic polymer having pendant alkoxysilane comprising the free radical reaction product of a polysiloxane, an N-alkylphosphonate N-oxylalkyl ester initiator; and ethylenically unsaturated monomers. The acrylic polymer can be further crosslinked with reactive polysiloxanes.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: March 18, 2008
    Inventors: Wai-Kwong Ho, Liza A. Capino, Matthew V. Croyle, James M. Reuter, Richard F. Tomko
  • Publication number: 20060194921
    Abstract: An acrylic polymer having pendant alkoxysilane comprising the free radical reaction product of a polysiloxane, an N-alkylphosphonate N-oxylalkyl ester initiator; and ethylenically unsaturated monomers. The acrylic polymer can be further crosslinked with reactive polysiloxanes.
    Type: Application
    Filed: April 25, 2006
    Publication date: August 31, 2006
    Inventors: Wai-Kwong Ho, Liza Capino, Matthew Croyle, James Reuter, Richard Tomko
  • Patent number: 7074856
    Abstract: An ambient temperature curing coating composition comprising the crosslinked reaction product of: (a) an amino-functional compound, wherein the amino-functional compound is a bis-silylamine of general formula: (R2)b(R1Y)aSi-Q1-NH-Q2-(NH-Q3)n-Si(YR1)a(R2)b wherein n?0, a=3?b, b=0,1,2 and wherein each Y is independently a heteroatom, selected from O, N; if Y is N, then the valency of Y is 2; if Y is O, then the valency of Y is 1; each R1 is independently a monovalent radical (e.g., hydrogen, hydrocarbon including but not limited to alkyl (linear or brached), cycloalkyl, aryl, allyl, or aralkyl. Preferably, R1 is an alkyl of 1–10 carbon atoms. Each R1 may be the same or different; R2 is a monovalent radical, and can include heteroatoms (e.g., oxygen, nitrogen, sulfur) not directly bonded to the silicon atom, including but not limited to, alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Each R2 may be the same or different.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: July 11, 2006
    Assignee: The Sherwin-Williams Company
    Inventors: Wai-Kwong Ho, Liza A. Capino, Matthew V. Croyle, James M. Reuter, Richard F. Tomko
  • Publication number: 20040122183
    Abstract: An ambient temperature curing coating composition comprising the crosslinked reaction product of:
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Wai-Kwong Ho, Liza A. Capino, Matthew V. Croyle, James M. Reuter, Richard F. Tomko