Patents by Inventor Xiaojin Harry Li

Xiaojin Harry 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: 20130340964
    Abstract: The invention is directed to methods and compositions for reducing the deposition of pitches and stickies in a papermaking process. The method involves introducing an anionic glycerol-based polymer to the papermaking process. This anionic polymer prevents the pitches and stickies from depositing and agglomerating in papermaking processes.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 26, 2013
    Inventors: Xiaojin Harry Li, Paul Richardson, Qing Qing Yuan, Qun Dong
  • Publication number: 20130139981
    Abstract: The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a cross-linked glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a high stress environment. In addition, it is more soluble in the harsh condition than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process.
    Type: Application
    Filed: February 4, 2013
    Publication date: June 6, 2013
    Inventors: Prasad Y. Duggirala, Xiaojin Harry Li
  • Patent number: 8394290
    Abstract: The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: March 12, 2013
    Assignee: Nalco Company
    Inventors: Ryan Chester, John D. Kildea, Jing Wang, Heinrich E. Bode, Xiaojin Harry Li
  • Patent number: 8366877
    Abstract: The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a liphohydrophilic glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a highly alkaline environment. In addition, it is more soluble in high pH than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 5, 2013
    Assignee: Nalco Company
    Inventors: Prasad Y. Duggirala, Xiaojin Harry Li
  • Publication number: 20120305837
    Abstract: The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Application
    Filed: August 15, 2012
    Publication date: December 6, 2012
    Inventors: Ryan Chester, John D. Kildea, Jing Wang, Heinrich E. Bode, Xiaojin Harry Li
  • Patent number: 8298508
    Abstract: The invention provides methods and compositions for improving the production of alumina hydrate. The invention involves adding one or more polysaccharides to liquor or slurry in the fluid circuit of the production process. The one or more polysaccharides can be a cross-linked polysaccharide (such as cross-linked dextran or cross-linked dihydroxypropyl cellulose). The various polysaccharides can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: October 30, 2012
    Assignee: Nalco Company
    Inventors: Jing Wang, Heinrich E Bode, Xiaojin Harry Li
  • Publication number: 20120238776
    Abstract: The invention provides a method of efficiently producing branched, cyclic glycerol-based polymer surface active products having ester and alkyl functional groups with a co-product as anti-biodegrading agent from inexpensive readily available glycerol monomer. The method involves polymerizing glycerol or glycerol with at least another monomer to multiple other monomers in the presence of particular amount of a strong base as the catalyst under a particular distillation environment. The polyol then undergoes esterification, alkylation and crosslinking in presence of particular amount of a catalyst under a particular low activity atmospheric environment. The glycerol-based polymer surface active products produced by the inventive method are beneficial for reducing lignin, extractives and rejects levels in pulping process of papermaking industry.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Inventors: Xiaojin Harry Li, Prasad Duggirala, Joanna L. Shih
  • Patent number: 8252266
    Abstract: The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scieroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: August 28, 2012
    Assignee: Nalco Company
    Inventors: Ryan Chester, John D. Kildea, Jing Wang, Heinrich E Bode, Xiaojin Harry Li
  • Patent number: 8158116
    Abstract: A method of treating one or more hair shafts, each hair shaft including a cuticle layer and a cortex enclosed in the cuticle layer is disclosed. The method comprises: selecting one or more polymers that can penetrate the hair shafts with a pore size of about 5 angstroms to about 5000 angstroms; and treating the hair shafts by applying an effective amount of a composition containing said polymers to said hair shafts.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: April 17, 2012
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Yin Z. Hessefort, Brian T. Holland, Jeffery M. Atkins, Sascha Weiz, Xiaojin Harry Li
  • Publication number: 20120034143
    Abstract: The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scieroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 9, 2012
    Inventors: Ryan Chester, John D. Kildea, Jing Wang, Heinrich E. Bode, Xiaojin Harry Li
  • Publication number: 20120034142
    Abstract: The invention provides methods and compositions for improving the production of alumina hydrate. The invention involves adding one or more polysaccharides to liquor or slurry in the fluid circuit of the production process. The one or more polysaccharides can be a cross-linked polysaccharide (such as cross-linked dextran or cross-linked dihydroxypropyl cellulose). The various polysaccharides can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 9, 2012
    Inventors: Jing Wang, Heinrich E. Bode, Xiaojin Harry Li
  • Patent number: 8101045
    Abstract: The invention provides a composition of matter useful for producing very soft high grades of tissue paper. The composition of matter comprises an adhesive composition that includes a glycerol-based polyol. The glycerol-based polyol prevents the composition from becoming brittle and is non-volatile. This allows the composition to become rewetted after creping and allows for strong levels of adhesion even at high temperatures.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: January 24, 2012
    Assignee: Nalco Company
    Inventors: Gary S. Furman, Xiaojin Harry Li, Winston Su, Vladimir A. Grigoriev
  • Publication number: 20110220307
    Abstract: The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a liphohydrophilic glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a highly alkaline environment. In addition, it is more soluble in high pH than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 15, 2011
    Inventors: Prasad Y. Duggirala, Xiaojin Harry Li
  • Publication number: 20110162811
    Abstract: The invention provides a composition of matter useful for producing very soft high grades of tissue paper. The composition of matter comprises an adhesive composition that includes a glycerol-based polyol. The glycerol-based polyol prevents the composition from becoming brittle and is non-volatile. This allows the composition to become rewetted after creping and allows for strong levels of adhesion even at high temperatures.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Inventors: Gary S. Furman, Xiaojin Harry Li, Winston Su, Vladimir A. Grigoriev
  • Publication number: 20110092743
    Abstract: The invention provides a method of efficiently producing branched, cyclic glycerol-based polyols with a co-product as anti-biodegrading agent from inexpensive readily available glycerol monomer. The method involves polymerizing glycerol or glycerol with at least another monomer to multiple other monomers in the presence of particular amount of a strong base as the catalyst under a particular distillation environment. The polyol produced by the inventive method is beneficial of reducing scales in Bayer liquid for aluminum production process and improving brightness of coated paper substrates without greening effect.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 21, 2011
    Inventors: Xiaojin Harry Li, Joanna L. Shih, Heinrich E. Bode, Jing Wang, Frederick J. Swiecinski
  • Publication number: 20110008637
    Abstract: The invention provides a more effective optical brightener composition for coating paper substrates. The invention includes an optical brightening agent (OBA) and a glycerol based polymer. This combination results in a composition that provides a surprisingly large whitening effect and does not degrade the shade of the paper. As a result extremely high degrees of whiteness can be achieved without being frustrated by the greening effect.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 13, 2011
    Inventors: Katherine M. Broadus, Xiaojin Harry Li, Prasad Y. Duggirala
  • Publication number: 20100166692
    Abstract: A method of treating one or more damaged hair shafts, each hair shaft including a cuticle layer and a cortex enclosed in the cuticle layer is disclosed. The method comprises: selecting one or more polymers that can penetrate the hair shafts with a pore size of about 5 angstroms to about 5000 angstroms; and treating the hair shafts by applying an effective amount of a composition containing said anionic polymers to said hair shafts.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Yin Z. Hessefort, Brian T. Holland, Jeffery M. Atkins, Sascha Weiz, Xiaojin Harry Li, Virginie Kompalitch
  • Publication number: 20090220447
    Abstract: A method of treating one or more hair shafts, each hair shaft including a cuticle layer and a cortex enclosed in the cuticle layer is disclosed. The method comprises: selecting one or more polymers that can penetrate the hair shafts with a pore size of about 5 angstroms to about 5000 angstroms; and treating the hair shafts by applying an effective amount of a composition containing said polymers to said hair shafts.
    Type: Application
    Filed: December 30, 2008
    Publication date: September 3, 2009
    Inventors: Yin Z. Hessefort, Brian T. Holland, Jeffery M. Atkins, Sascha Weiz, Xiaojin Harry Li