Patents by Inventor Huai N. Cheng

Huai N. Cheng 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: 10023777
    Abstract: An adhesive composition containing cottonseed protein, and one or more of the following components: (i) soy protein, (ii) a polysaccharide, and (iii) at least one modifier selected from a carboxylic acid, a dicarboxylic acid, a phosphorus-containing acid or ester, a cationic amino acid, a quaternary ammonium salt, or mixtures thereof.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 17, 2018
    Assignee: The United States of America, as Represented by the Secretary of Agriculture
    Inventors: Huai N Cheng, Catrina V. Ford, Michael K Dowd, Zhongqi He
  • Publication number: 20180171194
    Abstract: An adhesive composition containing cottonseed protein, and one or more of the following components: (i) soy protein, (ii) a polysaccharide, and (iii) at least one modifier selected from a carboxylic acid, a dicarboxylic acid, a phosphorus-containing acid or ester, a cationic amino acid, a quaternary ammonium salt, or mixtures thereof.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: HUAI N. CHENG, CATRINA V. FORD, MICHAEL K. DOWD, ZHONGQI HE
  • Patent number: 8747740
    Abstract: Haloamine biocides are prepared via multi-step processes in an integrated apparatus comprising an electrochemical cell and a mixing chamber, wherein active halogen donor species are electrochemically generated and subsequently reacted with amine-containing compositions to form haloamine biocide. Haloamine biocides prepared according to such processes are used to treat liquids in order to inhibit, reduce, and/or control microorganism growth therein.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 10, 2014
    Assignee: Hercules Incorporated
    Inventors: David E. Sharoyan, Huai N. Cheng, Michael J. Mayer, Freddie L. Singleton
  • Publication number: 20140080707
    Abstract: The present invention relates to the preparation of a stable, pH self-adjusting, solid biocidal mixture and also relates to the use of the biocidal mixture in preventing or inhibiting the growth of living organisms in liquids.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 20, 2014
    Applicant: Hercules Incorporated
    Inventor: Huai N. CHENG
  • Patent number: 8506757
    Abstract: Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: August 13, 2013
    Assignee: Hercules Incorporated
    Inventors: Qu-Ming Gu, Lloyd A. Lobo, Erin A. S. Doherty, Huai N. Cheng
  • Patent number: 8388806
    Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. Hydrophobically modified poly[ethylene glycol] are added to the pulp or applied to deposition-prone surfaces of a papermaking system.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: March 5, 2013
    Assignee: Hercules Incorporated
    Inventors: Qu-Ming Gu, Huai N. Cheng, William S. Carey, Robert A. Gelman, Jennifer L. Rittenhouse-Pruss, Erin A. S. Doherty
  • Patent number: 7893115
    Abstract: An oil-in-water emulsion useful as a defoamer for pulp and paper mill applications is described. The defoamer has an oil blend (of a triglyceride oil or a mixture of triglyceride oils and silicone), a stabilizing agent (to make the oil blend stable in the emulsion), hydrophobic silica particles, surfactants, dispersants, and other components. The emulsion is usable directly at low concentrations to control foam.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 22, 2011
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Eric O. Fernandez, John M. Sheepy
  • Patent number: 7879917
    Abstract: A defoamer made from a composition that has at least one triglyceride oil or triglyceride oil mixture, at least one silicone, at least one silicone-triglyceride stabilizing agent, hydrophobic silica particles, optionally one or more surfactants and/or dispersants, and optionally one or more thickeners, and optionally one or more biocides. The defoamers described herein have utility in controlling foam in industrial applications. Typically, the defoamer can be used to control foam in pulp and paper applications.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 1, 2011
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Eric Oswaldo Fernandez, John M. Sheepy
  • Publication number: 20100147476
    Abstract: Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.
    Type: Application
    Filed: November 18, 2009
    Publication date: June 17, 2010
    Inventors: Qu-Ming GU, Lloyd A. Lobo, Erin A. S. Doherty, Huai N. Cheng
  • Publication number: 20090090478
    Abstract: A process to enhance delignification or bleaching in chemical or mechanical pulps comprising generation of singlet oxygen as a separate step and subsequent transport of singlet oxygen to pulp to effect bleaching or brightening of the pulp.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 9, 2009
    Inventors: Martha G. Hollomon, Huai N. Cheng
  • Publication number: 20080181815
    Abstract: Haloamine biocides are prepared via multi-step processes in an integrated apparatus comprising an electrochemical cell and a mixing chamber, wherein active halogen donor species are electrochemically generated and subsequently reacted with amine-containing compositions to form haloamine biocide. Haloamine biocides prepared according to such processes are used to treat liquids in order to inhibit, reduce, and/or control microorganism growth therein.
    Type: Application
    Filed: January 25, 2007
    Publication date: July 31, 2008
    Applicant: Hercules Inc.
    Inventors: Huai N. Cheng, David E. Sharoyan, Freddie L. Singleton, Michael J. Mayer
  • Patent number: 6846923
    Abstract: Polysaccharides comprising one or more oxime linkages are provided. Methods for their preparation include the polycondensation of saccharides bearing oxime-forming substituents. In some embodiments, polymerization is conducted in the presence of galactose oxidase. The resulting oxime-linked polysaccharides have desirable properties and are useful in numerous applications including paper manufacturing and drug delivery vehicles.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: January 25, 2005
    Assignee: Hercules, Inc.
    Inventors: Peng George Wang, Wenhua Xie, Lei Qiao, Huai N. Cheng, Dennis J. Murphy, Qu-Ming Gu
  • Patent number: 6677427
    Abstract: A polyamide, the enzymatic reaction product of at least one polyamine and diester, and processes for preparing and using the same. In addition, processes for preparing and using the enzymatic reaction product as creping adhesives and wet strength resins to make cellulose products.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: January 13, 2004
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Qu-Ming Gu, William W. Maslanka
  • Patent number: 6624298
    Abstract: Esterified polysaccharides and the process of making such products are disclosed. The process can be enzymatic where an enzyme is used as a catalyst for the reaction. The process can also be chemical where no enzyme is used. Novel Products are obtained through lipase-catalyzed &bgr;-lactone ring opening alcoholysis of ketene dimers and the process of making such compositions containing products.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: September 23, 2003
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Qu Ming Gu
  • Publication number: 20030094251
    Abstract: A two-component mediator system is disclosed, wherein one component serves as a pro-oxidant and the other component serves as a pro-degradant and booster. When used in combination with a laccase, the two-component mediators enhance the bleaching of pulp. In addition, a composition comprising an oxidative enzyme, a pro-oxidant, and a pro-degradant, and a process for oxidizing a substrate that comprises treating the substrate with an oxidizing enzyme, a pro-oxidant, and a pro-degradant are disclosed. The pro-oxidant can be ascorbic acid, ascorbate, salicylic acid, salicylate, nicotinic acid, nicotinate, a hardwood black liquor, a softwood black liquor, ligno-organosolv, lignin sulfonate, or mixtures thereof. The pro-degradant can be urea, thiourea, sulfamic acid, sulfamide, guanidine, methylsulfonic acid, or mixtures thereof.
    Type: Application
    Filed: December 20, 2001
    Publication date: May 22, 2003
    Inventors: Huai N. Cheng, Simon Delagrave, Qu-Ming Gu, Dennis J. Murphy
  • Publication number: 20030096394
    Abstract: New mediators for use in laccase-mediator systems (LMS) are disclosed. The mediators enhance the activity of enzymes exhibiting laccase activity and can be used, for example, to bleach a dye in solution, to oxidize an appropriate compound, or to initiate vinyl or phenol polymerizations. A composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent (also referred to as a mediator or an activating agent) is also disclosed. A process for oxidizing a substrate that comprises treating the substrate with a composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent is also disclosed.
    Type: Application
    Filed: December 20, 2001
    Publication date: May 22, 2003
    Inventors: Huai N. Cheng, Simon Delagrave, Qu-Ming Gu, Daniel Michalopoulos, Dannis J. Murphy
  • Publication number: 20030089472
    Abstract: A composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent, also referred to as a mediator, is disclosed. A process for oxidizing a substrate that comprises treating the substrate with a composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent is disclosed. The process when used on lignin-containing material bleaches the lignin-containing material. A process for enhancing the activity of an enzyme exhibiting laccase activity that comprises adding an enzyme enhancing agent to the enzyme is also disclosed.
    Type: Application
    Filed: December 20, 2001
    Publication date: May 15, 2003
    Inventors: Huai N. Cheng, Simon Delagrave, Qu-Ming Gu, Daniel Michalopoulos, Dennis J. Murphy
  • Publication number: 20030060446
    Abstract: Novel polysaccharides comprising one or more oxime linkages are provided. Methods for their preparation include the polycondensation of saccharides bearing oxime-forming substituents. In some embodiments, polymerization is conducted in the presence of galactose oxidase. The resulting oxime-linked polysaccharides have desirable properties and are useful in numerous applications including paper manufacturing and drug delivery vehicles.
    Type: Application
    Filed: September 18, 2001
    Publication date: March 27, 2003
    Inventors: Peng George Wang, Wenhua Xie, Lei Qiao, Huai N. Cheng, Dennis J. Murphy, Qu-Ming Gu
  • Publication number: 20030047295
    Abstract: A process of oxidizing a substrate is disclosed. The process comprising the step of treating the substrate with an oxidizing enzyme, a mediator that enhances the oxidative activity of the enzyme, and a chain transfer agent. In one example, the substrate is a lignin-containing material and the process results in bleaching of the lignin-containing material. Examples of some useful enzymes are laccase, catechol oxidase, monophenol monooxygenase, and bilirubin oxidase. A composition comprising an oxidative enzyme, a mediator that enhances the oxidative activity of the enzyme, and a chain transfer agent is also disclosed.
    Type: Application
    Filed: December 20, 2001
    Publication date: March 13, 2003
    Inventors: Huai N. Cheng, Simon Delagrave, Qu-Ming Gu, Dennis J. Murphy
  • Patent number: 6528643
    Abstract: Product of esterified polysaccharides and the process of making such product. The process can be enzymatic where an enzyme is used as a catalyst for the reaction. The process can also be chemical where no enzyme is used. Novel products are obtained through lipase-catalyzed &bgr;-lactone ring opening alcoholysis of ketene dimers and the process of making such compositions containing products.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: March 4, 2003
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Qu Ming Gu