Patents by Inventor Yongjun Chen

Yongjun Chen 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: 8281535
    Abstract: Protected prefinished fiber cement articles are manufactured by applying a protective layer on the finished surface of a fiber cement article. The protective layer protects the finish layer of the prefinished fiber cement article during handling, storage, and transport. Removing the protective layer leaves no residue on the finish layer, does not damage the finish layer, and does not substantially tear the protective layer. Protected prefinished fiber cement article are typically stacked on pallets for storage and transport. Optionally, spacers may be placed between the stacked protected prefinished fiber cement article.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 9, 2012
    Assignee: James Hardie Technology Limited
    Inventors: Yongjun Chen, Luan Giang, Caidian Luo, Weiling Peng
  • Publication number: 20120035284
    Abstract: Methylated polystyrene having pendant N-halamine and N-halamine precursor groups. Biocidal particles have been prepared by reacting highly crosslinked methylated polystyrene beads as starting materials with various N-halamine precursor compounds. The resulting polymer beads are halogenated with chlorine or bromine. The porous beads will be useful in disinfection applications as well as for sanitization and controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, infant swimwear, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, and fabrics.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 9, 2012
    Applicant: AUBURN UNIVERSITY
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20110000854
    Abstract: A method uses anionic and cationic polymers added in, any order or simultaneously, to aqueous media for the removal of substances. The sequential addition of the two biopolymers, anionic xanthan, followed by cationic chitosan, causes the rapid formation of very large and cohesive fibrillar aggregates that may exhibit high solids to liquid ratios and that quickly settle out from the aqueous media. The aqueous media can be easily separated from the large fibrillar aggregates by settling under gravity or by filtration through a porous containment device, such as a synthetic or non-synthetic woven or non-woven fabric including a geotextile fabric or a solid containment device containing a solid mesh screen.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 6, 2011
    Applicant: HaloSource, Inc.
    Inventors: Everett J. Nichols, James R. Scott, Jeffrey F. Williams, Yongjun Chen
  • Patent number: 7687072
    Abstract: Methylated polystyrene having pendant N-halamine and N-halamine precursor groups. Biocidal particles have been prepared by reacting highly crosslinked methylated polystyrene beads as starting materials with various N-halamine precursor compounds. The resulting polymer beads are halogenated with chlorine or bromine. The porous beads will be useful in disinfection applications, as well as for sanitization and controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, infant swimwear, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, and fabrics.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: March 30, 2010
    Assignee: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20100029797
    Abstract: Methylated polystyrene having pendant N-halamine and N-halamine precursor groups. Biocidal particles have been prepared by reacting highly crosslinked methylated polystyrene beads as starting materials with various N-halamine precursor compounds. The resulting polymer beads are halogenated with chlorine or bromine. The porous beads will be useful in disinfection applications as well as for sanitization and controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, infant swimwear, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, and fabrics.
    Type: Application
    Filed: October 5, 2009
    Publication date: February 4, 2010
    Applicant: AUBURN UNIVERSITY
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20090004468
    Abstract: An improved primer formulation for composite building materials, such as materials that are generally cementitious, gypsum, or of another inorganic building material, such as those containing cellulose, glass, steel or polymeric fibers. The improved formulation effectively blocks moisture from penetrating the composite building material and is better than alternate or conventional primers. The formulation also improves adhesion and prevents peel failure of a topcoat when applied to the composite building material. The improved formulation acts as a weather-guard and a hydrophobic treatment to all surfaces of the composite building material upon application.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Inventors: Yongjun Chen, Caidian Luo
  • Patent number: 7335373
    Abstract: N-halamine compounds which contain hindered amine and amide functional groups. Compounds include wherein X, X?, and X? independently are H, Cl, or Br, wherein no more than two of X, X?, and X? are H and wherein R, R?, and R? are independently alkyl groups containing 1 to 4 carbon atoms or hydrogen, and X and X? are independently H, Cl, or Br. Compositions comprising the compounds are also described. The compounds and/or compositions can be used, for example, for the purpose of constructing biocidal coatings and materials. The biocidal activity can inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as, virus particles.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: February 26, 2008
    Assignee: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen, Jie Liang, Rong Wu, Kevin Barnes, Royall M. Broughton, Unchin Cho, Jaewoong Lee
  • Publication number: 20080003438
    Abstract: Heterocyclic and acyclic silane monomers and siloxane polymers, and their halogenated derivatives, are provided for the purpose of functionalizing surfaces or materials so as to render them biocidal upon exposure to oxidative halogen solutions. The biocidal function can be imparted either before or after bonding or adhesion to the surface or material. The biocidal surfaces and materials can then be used to inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as virus particles, which can cause infectious diseases, and those microorganisms which cause noxious odors and unpleasant coloring such as mildew. Examples of surfaces and materials which can be rendered biocidal in this invention include, but are not limited to, cellulose, chitin, chitosan, synthetic fibers, glass, ceramics, plastics, rubber, cement grout, latex caulk, porcelain, acrylic films, vinyl, polyurethanes, silicon tubing, marble, metals, metal oxides, and silica.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 3, 2008
    Applicants: Auburn University, Vanson Halosource, Inc.
    Inventors: Shelby Worley, Yongjun Chen, Jia-Wang Wang, Rong Wu, Yanjun Li
  • Publication number: 20070196611
    Abstract: Protected prefinished fiber cement articles are manufactured by applying a protective layer on the finished surface of a fiber cement article. The protective layer protects the finish layer of the prefinished fiber cement article during handling, storage, and transport. Removing the protective layer leaves no residue on the finish layer, does not damage the finish layer, and does not substantially tear the protective layer. Protected prefinished fiber cement article are typically stacked on pallets for storage and transport. Optionally, spacers may be placed between the stacked protected prefinished fiber cement article.
    Type: Application
    Filed: March 8, 2007
    Publication date: August 23, 2007
    Inventors: Yongjun Chen, Luan Giang, Caidian Luo, Weiling Peng
  • Publication number: 20070015921
    Abstract: N-halaminehydantoinyl epoxide compounds which can be used for the construction of coatings and materials which can be rendered biocidal by exposure to halogen solutions either before or after curing the coating or material are disclosed. The biocidal coatings and materials can then be used to inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as virus particles, which can cause infectious diseases, and those microorganisms which cause noxious odors and unpleasant coloring such as mildew. The coatings are compatible with a variety of substrates including, but not limited to, cellulose, chitin, chitosan, synthetic fibers, cement grout, latex caulk, acrylic films, polyurethanes, plastics and paints.
    Type: Application
    Filed: March 10, 2006
    Publication date: January 18, 2007
    Inventors: S.D. Worley, Jie Liang, Yongjun Chen, Royall Broughton, Jia-Wang Wang, Rong Wu, Unchin Cho, Jaewoong Lee, Kevin Barnes
  • Patent number: 6969769
    Abstract: Heterocyclic and acyclic silane monomers and siloxane polymers, and their halogenated derivatives, are provided for the purpose of functionalizing surfaces or materials so as to render them biocidal upon exposure to oxidative halogen solutions. The biocidal function can be imparted either before or after bonding or adhesion to the surface or material. The biocidal surfaces and materials can then be used to inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as virus particles, which can cause infectious diseases, and those microorganisms which cause noxious odors and unpleasant coloring such as mildew. Examples of surfaces and materials which can be rendered biocidal in this invention include, but are not limited to, cellulose, chitin, chitosan, synthetic fibers, glass, ceramics, plastics, rubber, cement grout, latex caulk, porcelain, acrylic films, vinyl, polyurethanes, silicon tubing, marble, metals, metal oxides, and silica.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: November 29, 2005
    Assignee: Vanson Halosource, Inc.
    Inventors: Shelby D. Worley, Yongjun Chen, Jia-Wang Wang, Rong Wu, Yanjun Li
  • Publication number: 20050186173
    Abstract: N-halamine compounds which contain hindered amine and amide functional groups. Compounds include wherein X, X?, and X? independently are H, Cl, or Br, wherein no more than two of X, X?, and X? are H and wherein R, R?, and R? are independently alkyl groups containing 1 to 4 carbon atoms or hydrogen, and X and X? are independently H, Cl, or Br. Compositions comprising the compounds are also described. The compounds and/or compositions can be used, for example, for the purpose of constructing biocidal coatings and materials. The biocidal activity can inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as, virus particles, which can cause infectious diseases, and those microorganisms which cause noxious odors and unpleasant coloring, such as mildew.
    Type: Application
    Filed: November 17, 2004
    Publication date: August 25, 2005
    Inventors: Shelby Worley, Yongjun Chen, Jie Liang, Rong Wu, Kevin Barnes, Royall Broughton, Unchin Cho, Jaewoong Lee
  • Patent number: 6852312
    Abstract: Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-5-(4?-vinylphenyl)hydantoin, poly-1,3-dibromo-5-methyl-5-(4?-vinylphenyl)hydantoin, and their monohalogenated alkali metal salts and protonated derivatives have been prepared as porous beads by use of highly crosslinked polystyrene beads as starting materials. The porous beads will be useful in water and air disinfection applications when employed in cartridge filters and carafes (for water), as well as for controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, fabrics, and air filters or the like.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: February 8, 2005
    Assignee: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20040127667
    Abstract: Heterocyclic and acyclic silane monomers and siloxane polymers, and their halogenated derivatives, are provided for the purpose of functionalizing surfaces or materials so as to render them biocidal upon exposure to oxidative halogen solutions. The biocidal function can be imparted either before or after bonding or adhesion to the surface or material. The biocidal surfaces and materials can then be used to inactivate pathogenic microorganisms such as bacteria, fungi, and yeasts, as well as virus particles, which can cause infectious diseases, and those microorganisms which cause noxious odors and unpleasant coloring such as mildew. Examples of surfaces and materials which can be rendered biocidal in this invention include, but are not limited to, cellulose, chitin, chitosan, synthetic fibers, glass, ceramics, plastics, rubber, cement grout, latex caulk, porcelain, acrylic films, vinyl, polyurethanes, silicon tubing, marble, metals, metal oxides, and silica.
    Type: Application
    Filed: March 24, 2003
    Publication date: July 1, 2004
    Inventors: Shelby D. Worley, Yongjun Chen, Jia-Wang Wang, Rong Wu, Yanjun Li
  • Publication number: 20040086480
    Abstract: Methylated polystyrene having pendant N-halamine and N-halamine precursor groups. Biocidal particles have been prepared by reacting highly crosslinked methylated polystyrene beads as starting materials with various N-halamine precursor compounds. The resulting polymer beads are halogenated with chlorine or bromine. The porous beads will be useful in disinfection applications, as well as for sanitization and controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, infant swimwear, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, and fabrics.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Applicant: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Patent number: 6548054
    Abstract: Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-5-(4′-vinylphenyl)hydantoin, poly-1,3-dibromo-5-methyl-5-(4′-vinylphenyl)hydantoin, and their monohalogenated alkali metal salts and protonated derivatives have been prepared as porous beads by use of highly crosslinked polystyrene beads as starting materials. The porous beads will be useful in water and air disinfection applications when employed in cartridge filters and carafes (for water), as well as for controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, fabrics, and air filters or the like.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: April 15, 2003
    Assignee: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20030044378
    Abstract: Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-5-(4′-vinylphenyl)hydantoin, poly-1,3-dibromo-5-methyl-5-(4′-vinylphenyl)hydantoin, and their monohalogenated alkali metal salts and protonated derivatives have been prepared as porous beads by use of highly crosslinked polystyrene beads as starting materials. The porous beads will be useful in water and air disinfection applications when employed in cartridge filters and carafes (for water), as well as for controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, fabrics, and air filters or the like.
    Type: Application
    Filed: September 6, 2001
    Publication date: March 6, 2003
    Applicant: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Publication number: 20030044377
    Abstract: Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-5-(4′-vinylphenyl)hydantoin, poly-1,3-dibromo-5-methyl-5-(4′-vinylphenyl)hydantoin, and their monohalogenated alkali metal salts and protonated derivatives have been prepared as porous beads by use of highly crosslinked polystyrene beads as starting materials. The porous beads will be useful in water and air disinfection applications when employed in cartridge filters and carafes (for water), as well as for controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, fabrics, and air filters or the like.
    Type: Application
    Filed: October 15, 2002
    Publication date: March 6, 2003
    Applicant: Auburn University
    Inventors: Shelby D. Worley, Yongjun Chen
  • Patent number: 6261538
    Abstract: Disclosed is a series of the water-insoluble polymeric quaternary phosphonium salt-type bactericides, which consists of as active bactericidal components an amino quaternary phosphonium salt, a quaternary ammonium group-containing quaternary phosphonium salt, an amino quaternary phosphonium salt-quaternay ammonium salt, or a quaternary ammonium salt-containing quaternary phosphonium salt and quaternary ammonium salt carried on a resin carrier which can be chloromethylated. Said bactericide series has rapid and highly effective bactericidal activity, and can be used repeatedly, and used widely for sterilizing and disinfecting various fluid media such as different industrial and domestic water and the like.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: July 17, 2001
    Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing, SINOPEC
    Inventors: Yongjun Chen, Xieqing Wang, Bengao Li