Patents by Inventor Zhiying Yu

Zhiying Yu 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: 20250116065
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a Very Long Fiber (VLF) content of about 0.50% or less. The fibers are readily dispersible in water and useful in the formation of fibrous sheets, particularly wet-laid sheets and more particularly wet-laid tissue sheets having a relatively low basis weight. In addition of having a relatively long fiber length and a low VLF content, the pulps may also have a Dispersivity Index of about 2.00 or less, which is indicative of a relatively narrow fiber length distribution. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping process using an alkaline and hydrogen peroxide where the plant biomass is cut to size prior to pulping.
    Type: Application
    Filed: December 20, 2024
    Publication date: April 10, 2025
    Inventors: David J. Paulson, Thomas G. Shannon, Samantha C. Ackerly, Richard L. Underhill, Zhiying Yu
  • Patent number: 12227900
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss fiber length or pulp yield. The high degree of brightness and relatively long fiber length makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5% debris prior to bleaching.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: February 18, 2025
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Thomas G. Shannon, Samantha C. Ackerly, Zhiying Yu, David J. Paulson, Ning Wei
  • Patent number: 12215464
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a Very Long Fiber (VLF) content of about 0.50% or less. The fibers are readily dispersible in water and useful in the formation of fibrous sheets, particularly wet-laid sheets and more particularly wet-laid tissue sheets having a relatively low basis weight. In addition of having a relatively long fiber length and a low VLF content, the pulps may also have a Dispersivity Index of about 2.00 or less, which is indicative of a relatively narrow fiber length distribution. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping process using an alkaline and hydrogen peroxide where the plant biomass is cut to size prior to pulping.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: February 4, 2025
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: David J. Paulson, Thomas G. Shannon, Samantha C. Ackerly, Richard L. Underhill, Zhiying Yu
  • Publication number: 20250012010
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss of fiber length or pulp yield. The high degree of brightness and relatively long fiber length make the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5 wt % debris prior to bleaching.
    Type: Application
    Filed: September 17, 2024
    Publication date: January 9, 2025
    Inventors: Zhiying Yu, Thomas G. Shannon, Ning Wei
  • Publication number: 20240392505
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a porosity of about 100 cfm or greater. The relatively high degree of porosity is achieved without a loss in tensile strengths. The high degree of porosity and strength makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the plant biomass is cut to size prior to pulping.
    Type: Application
    Filed: August 7, 2024
    Publication date: November 28, 2024
    Inventors: Thomas G. Shannon, Zhiying Yu
  • Patent number: 12146262
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss of fiber length or pulp yield. The high degree of brightness and relatively long fiber length make the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5 wt % debris prior to bleaching.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: November 19, 2024
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Zhiying Yu, Thomas G. Shannon, Ning Wei
  • Patent number: 12098507
    Abstract: The non-wood pulps have a fiber length greater than about 1.70 mm and a porosity of about 100 cfm or greater. The relatively high degree of porosity is achieved without a loss in tensile strengths. The high degree of porosity and strength makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the plant biomass is cut to size prior to pulping.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: September 24, 2024
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Thomas G. Shannon, Zhiying Yu
  • Publication number: 20240018723
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss of fiber length or pulp yield. The high degree of brightness and relatively long fiber length make the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5 wt % debris prior to bleaching.
    Type: Application
    Filed: November 5, 2021
    Publication date: January 18, 2024
    Inventors: Zhiying Yu, Thomas G. Shannon, Ning Wei
  • Publication number: 20240011223
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a porosity of about 100 cfm or greater. The relatively high degree of porosity is achieved without a loss in tensile strengths. The high degree of porosity and strength makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the plant biomass is cut to size prior to pulping.
    Type: Application
    Filed: November 5, 2021
    Publication date: January 11, 2024
    Inventors: Thomas G. Shannon, Zhiying Yu
  • Publication number: 20240003087
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a Very Long Fiber (VLF) content of about 0.50% or less. The fibers are readily dispersible in water and useful in the formation of fibrous sheets, particularly wet-laid sheets and more particularly wet-laid tissue sheets having a relatively low basis weight. In addition of having a relatively long fiber length and a low VLF content, the pulps may also have a Dispersivity Index of about 2.00 or less, which is indicative of a relatively narrow fiber length distribution. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping process using an alkaline and hydrogen peroxide where the plant biomass is cut to size prior to pulping.
    Type: Application
    Filed: November 5, 2021
    Publication date: January 4, 2024
    Inventors: David J. Paulson, Thomas G. Shannon, Samantha C. Ackerly, Richard L. Underhill, Zhiying Yu
  • Publication number: 20230407562
    Abstract: Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss fiber length or pulp yield. The high degree of brightness and relatively long fiber length makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the primary pulp is cleaned to reduce debris prior to bleaching. Preferably the cleaned primary pulp has less than about 5% debris prior to bleaching.
    Type: Application
    Filed: November 5, 2021
    Publication date: December 21, 2023
    Inventors: Thomas G. Shannon, Samantha C. Ackerly, Zhiying Yu, David J. Paulson, Ning Wei
  • Patent number: 11492761
    Abstract: A ply-bonding agent or adhesive composition characterized by a viscosity and a surface tension for the manufacture of paper tissue and paper towel, includes: (a) water; (b) nanofibrillated cellulose; and (c) one or more modifiers effective to modify either or both of (i) the viscosity of the composition or (ii) the surface tension of the composition, wherein the one or more additional modifiers are selected from the group consisting of components (iii), (iv), (v), (vi), (vii) or (viii), wherein: (iii) is PVOH and a viscosity modifier; (iv) is a viscosity modifier; (v) is a viscosity modifier and a surface tension modifier other than PVOH; (vi) is a water-soluble cellulose derivative; (vii) is a water soluble polyol; and (viii) is a surface tension modifier other than PVOH. The compositions are particularly useful for ply-bonding multi-ply absorbent sheet when the plies are treated with debonder.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: November 8, 2022
    Assignee: GPCP IP Holdings LLC
    Inventors: Zhiying Yu, Siddharth S. Vaijapurkar, Daniel W. Sumnicht
  • Patent number: 10954634
    Abstract: A ply-bonding agent or adhesive composition characterized by a viscosity and a surface tension for the manufacture of paper tissue and paper towel, includes: (a) water; (b) nanofibrillated cellulose; and (c) one or more modifiers effective to modify either or both of (i) the viscosity of the composition or (ii) the surface tension of the composition, wherein the one or more additional modifiers are selected from the group consisting of components (iii), (iv), (v), (vi), (vii) or (viii), wherein: (iii) is PVOH and a viscosity modifier; (iv) is a viscosity modifier; (v) is a viscosity modifier and a surface tension modifier other than PVOH; (vi) is a water-soluble cellulose derivative; (vii) is a water soluble polyol; and (viii) is a surface tension modifier other than PVOH. The compositions are particularly useful for ply-bonding multi-ply absorbent sheet when the plies are treated with debonder.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: March 23, 2021
    Assignee: GPCP IP Holdings LLC
    Inventors: Zhiying Yu, Siddharth S. Vaijapurkar, Daniel W. Sumnicht
  • Patent number: 10954417
    Abstract: A multi-ply absorbent sheet includes a first absorbent ply of cellulosic sheet; a second absorbent ply of cellulosic sheet; and a ply bonding adhesive interposed between the first absorbent ply and the second absorbent ply, the ply-bonding adhesive thereby adhering said absorbent plies together. The ply-bonding adhesive comprises polyvinyl alcohol and nanofibrillated cellulose. In a particularly preferred embodiment the adhesive is applied as a dilute aqueous composition to tissue plies and the nanofibrillated cellulose has a Characteristic Breaking Length of 6.5 km or above.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 23, 2021
    Assignee: GPCP IP Holdings LLC
    Inventors: Daniel W. Sumnicht, Zhiying Yu, Siddharth S. Vaijapurkar
  • Publication number: 20210062430
    Abstract: A ply-bonding agent or adhesive composition characterized by a viscosity and a surface tension for the manufacture of paper tissue and paper towel, includes: (a) water; (b) nanofibrillated cellulose; and (c) one or more modifiers effective to modify either or both of (i) the viscosity of the composition or (ii) the surface tension of the composition, wherein the one or more additional modifiers are selected from the group consisting of components (iii), (iv), (v), (vi), (vii) or (viii), wherein: (iii) is PVOH and a viscosity modifier; (iv) is a viscosity modifier; (v) is a viscosity modifier and a surface tension modifier other than PVOH; (vi) is a water-soluble cellulose derivative; (vii) is a water soluble polyol; and (viii) is a surface tension modifier other than PVOH. The compositions are particularly useful for ply-bonding multi-ply absorbent sheet when the plies are treated with debonder.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 4, 2021
    Inventors: Zhiying Yu, Siddharth S. Vaijapurkar, Daniel W. Sumnicht
  • Publication number: 20200332470
    Abstract: An aqueous NFC containing tail-seal adhesive includes: (a) water; (b) nanofibrillated cellulose; and (c) one or more of: (i) a water-soluble cellulose derivative; or (ii) a water soluble polyol; or (iii) a viscosity modifier other than a water soluble cellulose derivative.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 22, 2020
    Inventors: Zhiying Yu, Siddharth S. Vaijapurkar, Daniel W. Sumnicht
  • Patent number: 10774476
    Abstract: A roll of absorbent sheet tail-sealed with an NFC containing aqueous tail-seal adhesive includes an NFC containing aqueous tail-seal adhesive interposed between a tail of the roll of absorbent sheet and an underlying convolution of the roll adhering the tail to the underlying convolution to form the tail-seal. The NFC containing tail-seal adhesive comprises nanofibrillated cellulose and one or more additional components selected from the group consisting of components (i), (ii), (iii), (iv) and (v) wherein (i) is a water-soluble cellulose derivative; (ii) is a water soluble polyol; (iii) is a viscosity modifier other than a water soluble cellulose derivative; (iv) is PVOH; and (v) is PVOH and a viscosity modifier. The NFC containing tail-seal adhesive optionally includes a surface tension modifier other than PVOH.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 15, 2020
    Assignee: GPCP IP Holdings LLC
    Inventors: Zhiying Yu, Siddharth S. Vaijapurkar, Daniel W. Sumnicht
  • Publication number: 20180230344
    Abstract: A multi-ply absorbent sheet includes a first absorbent ply of cellulosic sheet; a second absorbent ply of cellulosic sheet; and a ply bonding adhesive interposed between the first absorbent ply and the second absorbent ply, the ply-bonding adhesive thereby adhering said absorbent plies together. The ply-bonding adhesive comprises polyvinyl alcohol and nanofibrillated cellulose. In a particularly preferred embodiment the adhesive is applied as a dilute aqueous composition to tissue plies and the nanofibrillated cellulose has a Characteristic Breaking Length of 6.5 km or above.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Daniel W. Sumnicht, Zhiying Yu, Siddharth S. Vaijapurkar
  • Patent number: 10005932
    Abstract: A multi-ply absorbent sheet includes a first absorbent ply of cellulosic sheet; a second absorbent ply of cellulosic sheet; and a ply bonding adhesive interposed between the first absorbent ply and the second absorbent ply, the ply-bonding adhesive thereby adhering said absorbent plies together. The ply-bonding adhesive comprises polyvinyl alcohol and nanofibrillated cellulose. In a particularly preferred embodiment the adhesive is applied as a dilute aqueous composition to tissue plies and the nanofibrillated cellulose has a Characteristic Breaking Length of 6.5 km or above.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 26, 2018
    Assignee: GPCP IP Holdings LLC
    Inventors: Daniel W. Sumnicht, Zhiying Yu, Siddharth S. Vaijapurkar
  • Publication number: 20180037781
    Abstract: A multi-ply absorbent sheet includes a first absorbent ply of cellulosic sheet; a second absorbent ply of cellulosic sheet; and a ply bonding adhesive interposed between the first absorbent ply and the second absorbent ply, the ply-bonding adhesive thereby adhering said absorbent plies together. The ply-bonding adhesive comprises polyvinyl alcohol and nanofibrillated cellulose. In a particularly preferred embodiment the adhesive is applied as a dilute aqueous composition to tissue plies and the nanofibrillated cellulose has a Characteristic Breaking Length of 6.5 km or above.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Inventors: Daniel W. Sumnicht, Zhiying Yu, Siddharth S. Vaijapurkar