Patents by Inventor Chuang Sim Chong

Chuang Sim Chong 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: 20230414843
    Abstract: A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.
    Type: Application
    Filed: January 10, 2023
    Publication date: December 28, 2023
    Inventors: Choon Kong WOO, Chuang Sim CHONG, Nujalee DANGSEEYUN, Panor WANNAWONG
  • Patent number: 11577009
    Abstract: A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: February 14, 2023
    Assignee: ALLEGIANCE CORPORATION
    Inventors: Choon Kong Woo, Chuang Sim Chong, Nujalee Dangseeyun, Panor Wannawong
  • Publication number: 20200224055
    Abstract: A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: Choon Kong WOO, Chuang Sim CHONG, Nujalee DANGSEEYUN, Panor WANNAWONG
  • Patent number: 10662347
    Abstract: Methods for preparing copolymeric emulsions from at least one water soluble monomer and at least one water insoluble monomer are disclosed herein. In some embodiments, one or more surfactants and stabilizers may be used. In some embodiments, the monomers used in the process include, by total monomer weight, at least 50% water soluble monomers and at least 10% water insoluble monomers. Copolymer emulsions formed from the reaction product of at least one water soluble monomer and at least one water insoluble monomer are also disclosed along with articles coated with such emulsions and coating formulations made from such emulsions as well as methods for the manufacture and coating of such articles.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 26, 2020
    Assignee: ALLEGIANCE CORPORTATION
    Inventors: Daniel L. Holguin, Andre Mayer, Suo Phong Lee, Michael Meyers, Dennis Kopp, Wei Cheong Wong, Chii Yih Low, Shiping Wang, Xiaochuan Hu, Chuang Sim Chong
  • Patent number: 10647886
    Abstract: A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: May 12, 2020
    Assignee: Allegiance Corporation
    Inventors: Choon Kong Woo, Chuang Sim Chong, Nujalee Dangseeyun, Panor Wannawong
  • Patent number: 10517338
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: December 31, 2019
    Assignee: ALLEGIANCE CORPORATION
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Publication number: 20170130018
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Applicant: ALLEGIANCE CORPORATION
    Inventors: SEONG FONG CHEN, SHIPING WANG, WEI CHEONG WONG, CHUANG SIM CHONG
  • Publication number: 20170107403
    Abstract: A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 20, 2017
    Applicant: Allegiance Corporation
    Inventors: CHOON KONG WOO, CHUANG SIM CHONG, NUJALEE DANGSEEYUN, PANOR WANNAWONG
  • Patent number: 9579426
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: February 28, 2017
    Assignee: ALLEGIANCE CORPORATION
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Publication number: 20150342274
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 3, 2015
    Applicant: ALLEGIANCE CORPORATION
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Publication number: 20150284584
    Abstract: Methods for preparing copolymeric emulsions from at least one water soluble monomer and at least one water insoluble monomer are disclosed herein. In some embodiments, one or more surfactants and stabilizers may be used. In some embodiments, the monomers used in the process include, by total monomer weight, at least 50% water soluble monomers and at least 10% water insoluble monomers. Copolymer emulsions formed from the reaction product of at least one water soluble monomer and at least one water insoluble monomer are also disclosed along with articles coated with such emulsions and coating formulations made from such emulsions as well as methods for the manufacture and coating of such articles.
    Type: Application
    Filed: October 29, 2014
    Publication date: October 8, 2015
    Inventors: Daniel L. HOLGUIN, Andre MAYER, Sou Phong LEE, Michael MEYERS, Dennis KOPP, Wei Cheong WONG, Chii Yi LOW, Shiping WANG, Xiaochuan HU, Chuang Sim CHONG
  • Patent number: 9085663
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 21, 2015
    Assignee: Allegiance Corporation
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Patent number: 9080025
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 14, 2015
    Assignee: Allegiance Corporation
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Publication number: 20150113704
    Abstract: Methods for preparing copolymeric emulsions from at least one water soluble monomer and at least one water insoluble monomer are disclosed herein. In some embodiments, one or more surfactants and stabilizers may be used. In some embodiments, the monomers used in the process include, by total monomer weight, at least 50% water soluble monomers and at least 10% water insoluble monomers. Copolymer emulsions formed from the reaction product of at least one water soluble monomer and at least one water insoluble monomer are also disclosed along with articles coated with such emulsions and coating formulations made from such emulsions as well as methods for the manufacture and coating of such articles.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Applicant: ALLEGIANCE CORPORATION
    Inventors: Wei Cheong WONG, SHIPING WANG, Chii Yih LOW, Chuang Sim CHONG, Xiaochuan HU, Dennis KOPP, Andre MAYER, Michael MEYERS, Daniel L. Holguin, Sou Phong LEE
  • Publication number: 20120121838
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 17, 2012
    Applicant: ALLEGIANCE CORPORATION
    Inventors: Seong Fong CHEN, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Publication number: 20120107485
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 3, 2012
    Applicant: ALLEGIANCE CORPORATION
    Inventors: Seong Fong CHEN, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Patent number: 8110266
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: February 7, 2012
    Assignee: Allegiance Corporation
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
  • Patent number: 7566502
    Abstract: The invention disclosed herein relates to improved elastomeric articles and processes for making the elastomeric articles. In particular, the invention relates to the surface modification of elastomeric articles such as industrial, surgical, and examination gloves that provides for improved consistency with respect to surface tack on a single article, between different articles from a single production batch, and between articles from separate production batches. The surface modification treatment comprises application of an aqueous mixture of silicone emulsion and ammonium salts of alkyl phosphates to the surfaces of elastomeric articles.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: July 28, 2009
    Assignee: Allegiance Corporation
    Inventors: Seong Fong Chen, Chuang Sim Chong, Wei Cheong Wong
  • Publication number: 20080190322
    Abstract: This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 14, 2008
    Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong