Patents by Inventor Sehyun Nam

Sehyun Nam 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: 20160341119
    Abstract: A melt blowing process comprising: (a) providing a thermoplastic polymer material that includes at least one or a plurality of polyester polymers and at least one or a combination of different meltable metal phosphinates; and (b) melt blowing the thermoplastic polymer material into at least one fiber or a plurality of fibers, with each fiber having a diameter or thickness that is less than about 10 microns. The metal phosphinate is in an amount that (a) reduces the viscosity of the polyester polymer and (b) functions as a crystallizing agent, which at least promotes crystallization of the polyester polymer, when the thermoplastic polymer material is melt blown into the at least one fiber. Non-woven and woven fibrous structures can be made using fibers made from this process.
    Type: Application
    Filed: August 3, 2016
    Publication date: November 24, 2016
    Inventors: Nataliya V. Fedorova, Eric M. Moore, Sehyun Nam, Pamela A. Percha, Sachin Talwar
  • Patent number: 9447523
    Abstract: A melt blowing process comprising: (a) providing a thermoplastic polymer material that includes at least one or a plurality of polyester polymers and at least one or a combination of different meltable metal phosphinates; and (b) melt blowing the thermoplastic polymer material into at least one fiber or a plurality of fibers, with each fiber having a diameter or thickness that is less than about 10 microns. The metal phosphinate is in an amount that (a) reduces the viscosity of the polyester polymer and (b) functions as a crystallizing agent, which at least promotes crystallization of the polyester polymer, when the thermoplastic polymer material is melt blown into the at least one fiber. Non-woven and woven fibrous structures can be made using fibers made from this process.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 20, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Nataliya V. Fedorova, Eric M. Moore, Sehyun Nam, Pamela A. Percha, Sachin Talwar
  • Publication number: 20150125696
    Abstract: A melt blowing process comprising: (a) providing a thermoplastic polymer material that includes at least one or a plurality of polyester polymers and at least one or a combination of different meltable metal phosphinates; and (b) melt blowing the thermoplastic polymer material into at least one fiber or a plurality of fibers, with each fiber having a diameter or thickness that is less than about 10 microns. The metal phosphinate is in an amount that (a) reduces the viscosity of the polyester polymer and (b) functions as a crystallizing agent, which at least promotes crystallization of the polyester polymer, when the thermoplastic polymer material is melt blown into the at least one fiber. Non-woven and woven fibrous structures can be made using fibers made from this process.
    Type: Application
    Filed: December 20, 2012
    Publication date: May 7, 2015
    Inventors: Nataliya V. Fedorova, Eric M. Moore, Sehyun Nam, Pamela A. Percha, Sachin Talwar
  • Patent number: 6649005
    Abstract: This invention provides a method of bonding substantially non-fluorinated polymeric material to dissimilar polymers, particularly fluoropolymer materials, utilizing a bonding composition comprising base-treated amine group-containing substantially non-fluorinated polymer. Multi-layer articles and composite constructions, including retroreflective sheeting, fuel line hoses, and adhesive articles made of a fluoropolymer layer and a substantially non-fluorinated layer are also provided.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: November 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Sehyun Nam, Trang Pham
  • Patent number: 6197393
    Abstract: This invention provides a method of bonding substantially non-fluorinated polymeric material to a fluoropolymer utilizing a bonding composition comprising primary or secondary di- or poly-amine and a melt-processable, substantantially non-fluorinated component. Multi-layer articles and composite constructions, including retroreflective sheeting and fuel line hoses, made of a fluoropolymer layer and a substantially non-fluorinated layer are also provided.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: March 6, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Thomas J. Blong, Edward E. Parsonage, Keizo Yamanaka, Sehyun Nam, Constance J. Nelson
  • Patent number: 6156400
    Abstract: This invention provides a method of bonding substantially non-fluorinated polymeric material to dissimilar polymers, particularly fluoropolymer materials, utilizing a bonding composition comprising base-treated amide group-containing substantially non-fluorinated polymer. Multi-layer articles and composite constructions, including retroreflective sheeting, fuel line hoses, and adhesive articles made of a fluoropolymer layer and a substantially non-fluorinated layer are also provided.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: December 5, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Sehyun Nam, Trang Pham
  • Patent number: 6096428
    Abstract: This invention provides a method of bonding substantially non-fluorinated polymeric material to dissimilar polymers, particularly fluoropolymer materials, utilizing a bonding composition comprising substantially non-fluorinated polymeric material comprising a blend of carboxyl, anhydride, imide, or oxycarboxy functional polyolefin with a suitable organic or inorganic base and an organo-onium compound that is stable in the presence of the base. Multi-layer articles and composite constructions, including retroreflective sheeting, fuel line hoses, and adhesive articles made of a fluoropolymer layer and a substantially non-fluorinated layer are also provided.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: August 1, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Sehyun Nam
  • Patent number: 5397648
    Abstract: A pressure-sensitive adhesive comprises a moisture-curable polymer comprising a polymer prepared by polymerization of at least one .alpha.-olefin monomer, said polymer containing hydrolyzable or condensable silyl groups and having a weight average molecular weight of at least 30,000. The pressure-sensitive adhesive can be hot-melt coated without emitting volatiles and then can adhere aggressively to both polar and nonpolar substrates. The PSA has good internal strength at high temperatures.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: March 14, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gaddam N. Babu, James R. Peterson, Sehyun Nam
  • Patent number: 5371143
    Abstract: Fluorine-containing thermoplastic elastomeric compositions comprising: (A) a continuous phase comprising: (1) about 0 to 90 weight percent of thermoplastic polymer having a melt temperature or glass transition temperature greater than about 150.degree. C., and (2) about 10 to 100 weight percent of block thermoplastic elastomer having a melt temperature greater than about 150.degree. C.; and (B) a disperse phase comprising particles or domains of cured, fluoroelastomer composition. Such compositions are preferably prepared by dynamically vulcanizing the ingredients of the fluorine-containing thermoplastic elastomeric composition.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: December 6, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles T. Novak, Paul N. Nelson, Sehyun Nam, William DeMoully, Kenneth D. Goebel
  • Patent number: 5296561
    Abstract: A pressure-sensitive adhesive comprises a moisture-curable polymer comprising a polymer prepared by polymerization of at least one .alpha.-olefin monomer, said polymer containing hydrolyzable or condensable silyl groups and having a weight average molecular weight of at least 30,000. The pressure-sensitive adhesive can be hot-melt coated without emitting volatiles and then can adhere aggressively to both polar and nonpolar substrates. The PSA has good internal strength at high temperatures.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: March 22, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gaddam N. Babu, James R. Peterson, Sehyun Nam
  • Patent number: 5227442
    Abstract: A pressure-sensitive adhesive comprises a moisture-curable polymer comprising a polymer prepared by polymerization of at least one .alpha.-olefin monomer, said polymer containing hydrolyzable or condensable silyl groups and having a weight average molecular weight of at least 30,000. The pressure-sensitive adhesive can be hot-melt coated without emitting volatiles and then can adhere aggressively to both polar and nonpolar substrates. The PSA has good internal strength at high temperatures.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: July 13, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gaddam N. Babu, James R. Peterson, Sehyun Nam