Patents by Inventor Guomei Peng

Guomei Peng 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).

  • Product for use in papermaking and preparation thereof
    Patent number: 7682487
    Abstract: A paper sizing composition, comprising at least one first sizing component dispersed in water, the said sizing component being prepared of a reaction product of a maleic anhydride and a fatty acid component, and an aluminium component. The fatty acid component comprises an alkyl ester of one or more fatty acids selected from a vegetable oil based fatty acid mixture. The particle size of the particles in said first sizing component has been reduced so that in the dispersion at least 50% of the particles are <2.5 ?m, at least 75% of the particles are <4 ?m and at least 90% of the particles are <5 ?m, preferably so that at least 50% of the particles are <2 ?m, at least 75% of the particles are <3 ?m and at least 90% of the particles are <4 ?m.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: March 23, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kenneth Sundberg, Jouko Käki, Tiina Luttikhedde, Guomei Peng
  • Paper sizing composition
    Patent number: 7585391
    Abstract: The invention relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). The invention provides a sizing composition which comprises an aqueous emulsion of an ASA wherein the ASA incorporates a maximum of 1% by weight (preferably a maximum of 0.5% by weight) of polymeric residues. The composition may incorporate less than 0.5% by weight of olefins. Paper sizing compositions in accordance with the invention provide enhanced resistance to penetration of the edges of paper and board by agents such as hot hydrogen peroxide and lactic acid.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: September 8, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kenneth Sundberg, John Roberts, Claes Zetter, Guomei Peng
  • Product For Use In Papermaking And Preparation Thereof
    Publication number: 20080017340
    Abstract: A paper sizing composition, comprising at least one first sizing component dispersed in water, the said sizing component being prepared of a reaction product of a maleic anhydride and a fatty acid component, and an aluminium component. The fatty acid component comprises an alkyl ester of one or more fatty acids selected from a vegetable oil based fatty acid mixture. The particle size of the particles in said first sizing component has been reduced so that in the dispersion at least 50% of the particles are <2.5 ?m, at least 75% of the particles are <4 ?m and at least 90% of the particles are <5 ?m, preferably so that at least 50% of the particles are <2 ?m, at least 75% of the particles are <3 ?m and at least 90% of the particles are <4 ?m.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 24, 2008
    Inventors: Kenneth Sundberg, Jouko Kaki, Tiina Luttikhedde, Guomei Peng
  • Paper sizing composition
    Publication number: 20050224202
    Abstract: The invention relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). The invention provides a sizing composition which comprises an aqueous emulsion of an ASA wherein the ASA incorporates a maximum of 1% by weight (preferably a maximum of 0.5% by weight) of polymeric residues. The composition may incorporate less than 0.5% by weight of olefins. Paper sizing compositions in accordance with the invention provide enhanced resistance to penetration of the edges of paper and board by agents such as hot hydrogen peroxide and lactic acid.
    Type: Application
    Filed: June 12, 2003
    Publication date: October 13, 2005
    Inventors: Kenneth Sundberg, John Roberts, Claes Zetter, Guomei Peng