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).
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Publication number: 20230414843Abstract: 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: ApplicationFiled: January 10, 2023Publication date: December 28, 2023Inventors: Choon Kong WOO, Chuang Sim CHONG, Nujalee DANGSEEYUN, Panor WANNAWONG
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Patent number: 11577009Abstract: 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: GrantFiled: March 30, 2020Date of Patent: February 14, 2023Assignee: ALLEGIANCE CORPORATIONInventors: Choon Kong Woo, Chuang Sim Chong, Nujalee Dangseeyun, Panor Wannawong
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Publication number: 20200224055Abstract: 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: ApplicationFiled: March 30, 2020Publication date: July 16, 2020Inventors: Choon Kong WOO, Chuang Sim CHONG, Nujalee DANGSEEYUN, Panor WANNAWONG
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Patent number: 10662347Abstract: 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: GrantFiled: October 29, 2014Date of Patent: May 26, 2020Assignee: ALLEGIANCE CORPORTATIONInventors: 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
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Patent number: 10647886Abstract: 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: GrantFiled: October 18, 2016Date of Patent: May 12, 2020Assignee: Allegiance CorporationInventors: Choon Kong Woo, Chuang Sim Chong, Nujalee Dangseeyun, Panor Wannawong
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Patent number: 10517338Abstract: 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: GrantFiled: January 19, 2017Date of Patent: December 31, 2019Assignee: ALLEGIANCE CORPORATIONInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Publication number: 20170130018Abstract: 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: ApplicationFiled: January 19, 2017Publication date: May 11, 2017Applicant: ALLEGIANCE CORPORATIONInventors: SEONG FONG CHEN, SHIPING WANG, WEI CHEONG WONG, CHUANG SIM CHONG
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Publication number: 20170107403Abstract: 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: ApplicationFiled: October 18, 2016Publication date: April 20, 2017Applicant: Allegiance CorporationInventors: CHOON KONG WOO, CHUANG SIM CHONG, NUJALEE DANGSEEYUN, PANOR WANNAWONG
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Patent number: 9579426Abstract: 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: GrantFiled: June 4, 2015Date of Patent: February 28, 2017Assignee: ALLEGIANCE CORPORATIONInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Publication number: 20150342274Abstract: 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: ApplicationFiled: June 4, 2015Publication date: December 3, 2015Applicant: ALLEGIANCE CORPORATIONInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Publication number: 20150284584Abstract: 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: ApplicationFiled: October 29, 2014Publication date: October 8, 2015Inventors: 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
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Patent number: 9085663Abstract: 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: GrantFiled: January 10, 2012Date of Patent: July 21, 2015Assignee: Allegiance CorporationInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Patent number: 9080025Abstract: 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: GrantFiled: January 10, 2012Date of Patent: July 14, 2015Assignee: Allegiance CorporationInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Publication number: 20150113704Abstract: 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: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Applicant: ALLEGIANCE CORPORATIONInventors: 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
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Publication number: 20120121838Abstract: 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: ApplicationFiled: January 10, 2012Publication date: May 17, 2012Applicant: ALLEGIANCE CORPORATIONInventors: Seong Fong CHEN, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Publication number: 20120107485Abstract: 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: ApplicationFiled: January 10, 2012Publication date: May 3, 2012Applicant: ALLEGIANCE CORPORATIONInventors: Seong Fong CHEN, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Patent number: 8110266Abstract: 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: GrantFiled: February 8, 2007Date of Patent: February 7, 2012Assignee: Allegiance CorporationInventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong
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Patent number: 7566502Abstract: 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: GrantFiled: September 17, 2003Date of Patent: July 28, 2009Assignee: Allegiance CorporationInventors: Seong Fong Chen, Chuang Sim Chong, Wei Cheong Wong
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Publication number: 20080190322Abstract: 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: ApplicationFiled: February 8, 2007Publication date: August 14, 2008Inventors: Seong Fong Chen, Shiping Wang, Wei Cheong Wong, Chuang Sim Chong