Patents by Inventor Reiyao Zhu

Reiyao Zhu 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: 20220025556
    Abstract: Processes for forming a yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition; the regions being distinct and present in the bicomponent filaments in a sheath-core structure or a side-by-side structure; wherein the first polymer composition comprises aramid polymer comprising 5 to 10 weight percent homogeneously dispersed discrete carbon particles and the second polymer composition comprises aramid polymer being free of discrete carbon particles and having at least one homogeneously dispersed masking pigment, the yarn having a total content of 0.5 to 5 weight percent discrete carbon particles.
    Type: Application
    Filed: April 5, 2021
    Publication date: January 27, 2022
    Inventors: Mark William Andersen, Mark T. Aronson, Christopher William Newton, Thomas Wayne Steinruck, B Lynne Wiseman, Reiyao Zhu
  • Patent number: 10982353
    Abstract: A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition; the regions being distinct and present in the bicomponent filaments in a sheath-core structure or a side-by-side structure; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent homogeneously dispersed discrete carbon particles and the second polymer composition comprises aramid polymer being free of discrete carbon particles and having at least one homogeneously dispersed masking pigment, the yarn having a total content of 0.5 to 5 weight percent discrete carbon particles.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 20, 2021
    Assignee: DUPONT SAFETY & CONSTRUCTION, INC.
    Inventors: Mark William Andersen, Mark T. Aronson, Christopher William Newton, Thomas Wayne Steinruck, B Lynne Wiseman, Reiyao Zhu
  • Publication number: 20200165751
    Abstract: A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition, each of the first and second regions being distinct in the bicomponent filaments; each bicomponent filament comprising 5 to 60 weight percent of the first polymer composition and 95 to 40 weight percent of the second polymer composition; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and the second polymer composition comprises modacrylic polymer being free of discrete carbon particles; the yarn having a total content of 0.1 to 5 weight percent discrete carbon particles.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Inventors: Mark William Andersen, Mark T. Aronson, Christopher William Newton, Thomas Wayne Steinruck, B. Lynne Wiseman, Reiyao Zhu
  • Patent number: 10590567
    Abstract: A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition, each of the first and second regions being distinct in the bicomponent filaments; each bicomponent filament comprising 5 to 60 weight percent of the first polymer composition and 95 to 40 weight percent of the second polymer composition; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and the second polymer composition comprises modacrylic polymer being free of discrete carbon particles; the yarn having a total content of 0.1 to 5 weight percent discrete carbon particles.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: March 17, 2020
    Assignee: DUPONT SAFETY & CONSTRUCTION, INC.
    Inventors: Mark William Andersen, Mark T. Aronson, Christopher William Newton, Thomas Wayne Steinruck, B Lynne Wiseman, Reiyao Zhu
  • Patent number: 10253435
    Abstract: An intimate blend of staple fibers, and a yarn, fabric, and article of clothing providing surprising arc performance; the intimate blend comprises 15 to 70 weight percent modacrylic fiber, 5 to 27 weight percent para-aramid fiber; and 3 to 80 weight percent meta-aramid fiber, wherein 25 to 100 parts of the meta-aramid fiber contains 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts of the meta-aramid fiber free of discrete carbon particles, the intimate blend having a total content of 0.1 to 3 weight percent discrete carbon particles.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 9, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Patent number: 10253437
    Abstract: An article of thermal protective clothing suitable for use in arc protection comprising a woven fabric comprising yarns comprising modacrylic fiber and aramid fiber, wherein 25 to 100 parts of the aramid fiber contain 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts of the aramid fiber are free of discrete carbon particles; the fabric having an ATPV of 10 cal/cm2 or greater at a basis weight of 6 ounces per square yard (203 grams per square meter) or less, and a total content of 0.1 to 3 weight percent discrete carbon particles.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 9, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Publication number: 20180057978
    Abstract: An article of thermal protective clothing suitable for use in arc protection comprising a woven fabric comprising yarns comprising modacrylic fiber and aramid fiber, wherein 25 to 100 parts of the aramid fiber contain 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts of the aramid fiber are free of discrete carbon particles; the fabric having an ATPV of 10 cal/cm2 or greater at a basis weight of 6 ounces per square yard (203 grams per square meter) or less, and a total content of 0.1 to 3 weight percent discrete carbon particles.
    Type: Application
    Filed: August 4, 2017
    Publication date: March 1, 2018
    Inventor: Reiyao Zhu
  • Publication number: 20180057965
    Abstract: An intimate blend of staple fibers, and a yarn, fabric, and article of clothing providing surprising arc performance; the intimate blend comprises 15 to 70 weight percent modacrylic fiber, 5 to 27 weight percent para-aramid fiber; and 3 to 80 weight percent meta-aramid fiber, wherein 25 to 100 parts of the meta-aramid fiber contains 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts of the meta-aramid fiber free of discrete carbon particles, the intimate blend having a total content of 0.1 to 3 weight percent discrete carbon particles.
    Type: Application
    Filed: August 4, 2017
    Publication date: March 1, 2018
    Inventor: REIYAO ZHU
  • Publication number: 20180057969
    Abstract: A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition, each of the first and second regions being distinct in the bicomponent filaments; each bicomponent filament comprising 5 to 60 weight percent of the first polymer composition and 95 to 40 weight percent of the second polymer composition; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and the second polymer composition comprises modacrylic polymer being free of discrete carbon particles; the yarn having a total content of 0.1 to 5 weight percent discrete carbon particles.
    Type: Application
    Filed: August 4, 2017
    Publication date: March 1, 2018
    Inventors: Mark William Andersen, Mark T. Aronson, Christopher William Newton, Thomas Wayne Steinruck, B. Lynne Wiseman, Reiyao Zhu
  • Publication number: 20180057964
    Abstract: A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition; the regions being distinct and present in the bicomponent filaments in a sheath-core structure or a side-by-side structure; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent homogeneously dispersed discrete carbon particles and the second polymer composition comprises aramid polymer being free of discrete carbon particles and having at least one homogeneously dispersed masking pigment, the yarn having a total content of 0.5 to 5 weight percent discrete carbon particles.
    Type: Application
    Filed: August 4, 2017
    Publication date: March 1, 2018
    Inventors: MARK WILLIAM ANDERSEN, MARK T. ARONSON, CHRISTOPHER WILLIAM NEWTON, THOMAS WAYNE STEINRUCK, B. LYNNE WISEMAN, REIYAO ZHU
  • Patent number: 9797070
    Abstract: An intimate blend of staple fibers, and a yarn, fabric, and article of clothing providing surprising arc performance and coloration capability, comprising a mixture of a first staple fiber made from a flame resistant polymer that retains at least 90 percent of its weight when heated to 425 degrees Celsius at a rate of 10 degrees per minute and comprises 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles; and either (a) a second staple fiber from a flame resistant polymer being free of discrete carbon particles and having an L* lightness coordinate of 70 or greater and being capable of accepting a dye or coloration, or (b) a second staple fiber blend being free of discrete carbon particles and comprising at least one second staple fiber from a flame resistant polymer and having an L* lightness coordinate of 70 or greater and being capable of accepting a dye or coloration; the mixture having a total content of 0.5 to 3 weight percent discrete carbon particles.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 24, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Christopher William Newton, Reiyao Zhu
  • Patent number: 9598797
    Abstract: A woven fabric suitable for use in arc protection and article of thermal protective clothing comprising the fabric, the fabric having a warp yarn dissimilar to a fill yarn, wherein a majority of the a face of the fabric is a first yarn and a majority of the opposing face of the fabric is a second yarn, wherein the second yarn comprises 25 to 100 parts aramid fiber containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts aramid fiber free of discrete carbon particles; and wherein the first yarn comprises aramid fiber being free of discrete carbon particles; the fabric having a total content of 0.5 to 3 weight percent discrete carbon particles.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: March 21, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Patent number: 9370212
    Abstract: This invention relates to an article of thermal protective clothing having fabric woven with a warp-faced or weft-faced twill weave that incorporates a first yarn forming the majority of the outer article surface that includes hydrophilic fiber and a first flame resistant fiber, with at least 25 weight percent of that first yarn being hydrophilic fiber; and a second yarn forming the majority of the inner article surface that includes at least 80 weight percent of a second flame resistant fiber that is hydrophobic. Alternatively, the first yarn forming the majority of the outer article surface can include a hydrophilic first flame resistant fiber.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: June 21, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Patent number: 9169582
    Abstract: This invention relates to a yarn having high moisture regain for use in arc and flame protection and fabrics and garments containing the yarn. The yarn has a blend of fibers which includes 10 to 40 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%, 20 to 60 weight percent modacrylic fiber, 15 to 45 weight percent FR rayon fiber, and (d) 5 to 20 weight percent para-aramid fiber; based on the total weight of these components. If desired, 1 to 3 weight percent of the para-aramid fiber in the yarn can be replaced with an antistatic fiber as long as at least 5 weight percent para-aramid fiber is present.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: October 27, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Patent number: 8695319
    Abstract: This invention relates to a flame-resistant spun yarn, woven fabric, and protective garment, comprising a blend of 60 to 85 parts by weight of polyoxadiazole staple fiber and 15 to 40 parts by weight modacrylic staple fiber; based on 100 total parts of the polyoxadiazole staple fiber and modacrylic staple fiber in the yarn. This invention also relates to methods for making the yarn.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: April 15, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Reiyao Zhu
  • Publication number: 20140026303
    Abstract: A fiber blend, yarn, fabric, and/or garment suitable for use in arc and flame protection comprising (a) greater than 30 percent aramid fiber; (b) 20 to 35 weight percent modacrylic fiber; (c) 20 to 35 weight percent rayon fiber having a limiting oxygen index of 21 or less, and having a dry tensile strength of 3 grams per denier or greater; and (d) 0 to 3 weight percent antistatic fiber; the percentages on the basis of components (a), (b), (c), and (d); wherein the difference in the amount of the modacrylic fiber and the rayon fiber present in the blend, yarn, fabric, and/or garment is 10 percent by weight or less.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 30, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Publication number: 20130210306
    Abstract: Described is a flame-resistant spun yarn having: about 50 to about 95 parts by weight of a sulfonated polyoxadiazole based staple fiber comprising repeat units of Formula (I) and one or both of Formula (II) and (IIa): wherein M is a cation; and about 5 to about 50 parts by weight of a textile staple fiber having limiting oxygen index of 21 or greater and a tenacity of about 4 grams per denier or greater, based on the total amount of the polymeric fiber and the textile fiber in the yarn.
    Type: Application
    Filed: December 5, 2011
    Publication date: August 15, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael W. Cobb, Sharlene Renee Williams, Reiyao Zhu
  • Publication number: 20130139306
    Abstract: This invention relates to a flame-resistant spun yarn, woven fabric, and protective garment, comprising a blend of 60 to 85 parts by weight of polyoxadiazole staple fiber and 15 to 40 parts by weight modacrylic staple fiber; based on 100 total parts of the polyoxadiazole staple fiber and modacrylic staple fiber in the yarn. This invention also relates to methods for making the yarn.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 6, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Publication number: 20130055491
    Abstract: This invention relates to a yarn having high moisture regain for use in arc and flame protection and fabrics and garments containing the yarn. The yarn has a blend of fibers which includes 10 to 40 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%, 20 to 60 weight percent modacrylic fiber, 15 to 45 weight percent FR rayon fiber, and (d) 5 to 20 weight percent para-aramid fiber; based on the total weight of these components. If desired, 1 to 3 weight percent of the para-aramid fiber in the yarn can be replaced with an antistatic fiber as long as at least 5 weight percent para-aramid fiber is present.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 7, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu
  • Publication number: 20130055490
    Abstract: This invention relates to an article of thermal protective clothing having fabric woven with a warp-faced or weft-faced twill weave that incorporates a first yarn forming the majority of the outer article surface that includes hydrophilic fiber and a first flame resistant fiber, with at least 25 weight percent of that first yarn being hydrophilic fiber; and a second yarn forming the majority of the inner article surface that includes at least 80 weight percent of a second flame resistant fiber that is hydrophobic. Alternatively, the first yarn forming the majority of the outer article surface can include a hydrophilic first flame resistant fiber.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 7, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Reiyao Zhu