Patents by Inventor Wenji Quan

Wenji Quan 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: 20240150559
    Abstract: Thermoplastic starch-based materials formed as a reactive extrusion product from one or more starches, plasticizers, with the addition of a diacid, diglycidyl ether, silicone and/or a glyceride additive added during gelatinization of the starch and plasticizer, before blending of such starch-based polymeric material with any other polymer (e.g., polyester biopolymers, polyolefins, polyamides, etc.). Silicones, where added, may alternatively be added after formation of the thermoplastic starch, e.g., as part of a masterbatch, when blending with another polymer. Addition of silicone reduces glycerin migration and smoke generation, particularly when processing such compositions to form nonwovens. Addition of glycerides (e.g., triglycerides) can increase hydrophobicity of the resulting starch-based polymeric material.
    Type: Application
    Filed: October 23, 2023
    Publication date: May 9, 2024
    Inventors: Kanth V. Josyula, Wenji Quan, Fehime Vatansever Ozaltun, Kurtis R. Clark, David J. Fairbanks, Leopoldo V. Cancio, Kenneth L. Kramer
  • Publication number: 20240150560
    Abstract: Thermoplastic starch-based materials formed as a reactive extrusion product from one or more starches, one or more plasticizers, and micro or nano particles or fibers, with such particles or fibers being added before gelatinization of the starch. A diacid or acid anhydride may also be included. Such components are added and then gelatinized together, before blending of a resulting starch-based polymeric material with any other polymer (e.g., polyester biopolymers, polyolefins, or the like). Addition of such nano or micro particles during synthesis of the thermoplastic starch advantageously results in a far more homogenous distribution of such particles or fibers throughout the starch-based material matrix than occurs where addition of similar particles or fibers is attempted after formation of the thermoplastic starch, e.g., when mixing with a partner resin material. Addition of a diacid during synthesis can reduce molecular weight and viscosity, further aiding in achieving substantially uniform distribution.
    Type: Application
    Filed: October 23, 2023
    Publication date: May 9, 2024
    Inventors: Kanth V. Josyula, Wenji Quan, Kurtis R. Clark, Fehime Vatansever Ozaltun, Leopoldo V. Cancio, Justin R. Sanders, Sunday E. Maust, Kenneth L. Kramer
  • Patent number: 11840623
    Abstract: Described herein are methods for rendering biodegradable a plastic material that is not itself biodegradable, by blending the plastic material with a carbohydrate-based polymeric material that is formed from one or more starches, and a plasticizer (e.g., glycerin). The carbohydrate-based polymeric material is less crystalline than the starting starch materials, e.g., being substantially amorphous, and having a crystallinity of no more than 20%. Third party testing shows blends of such materials render the entire blend biodegradable, believed to be due to the low crystalline substantially amorphous carbohydrate-based polymeric material breaking the hygroscopic barrier associated with the non-biodegradable plastic material, so that when blended together, both the plastic material and the carbohydrate-based polymeric material are biodegradable.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: December 12, 2023
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 11807741
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more “green” sustainable polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film, a bag, a bottle, a cap or lid therefore, a sheet, a box or other container, a plate, a cup, utensils, or the like.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: November 7, 2023
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 11674014
    Abstract: Described herein are blends of starch or starch-based materials with polymeric materials, where the starch or starch-based material is intimately blended with the polymeric material, so as to exhibit very small particles sizes (e.g., less than 2 ?m, or less than 1 ?m) for the starch or starch-based material in the matrix of the polymeric material. Such intimate dispersion of very small particles provides for far more of the particles dispersed more evenly throughout the matrix of the polymeric material, which may enhance various performance characteristics of the blended composite material. Methods of producing articles from such blends exhibiting such small particles and excellent dispersion are also disclosed.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 13, 2023
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Donald R. Allen, Wenji Quan, Bruno R. Pereira, Shigenobu Miura
  • Patent number: 11674018
    Abstract: Described herein are blends of carbohydrate-based polymeric materials with other polymeric materials, where the carbohydrate-based polymeric material is intimately blended with the other polymeric material, so as to exhibit very small particles sizes (e.g., less than 2 ?m, or less than 1 ?m) for the carbohydrate-based polymeric material in the matrix of the other polymeric material. Such intimate dispersion of very small particles provides for far more of the particles dispersed more evenly throughout the matrix of the other polymeric material, which may enhance various performance characteristics of the blended composite material, and provide for more consistent achievement of such characteristics, from batch to batch. Methods of producing articles from such blends exhibiting such small particles and excellent dispersion are also disclosed. While suitable for use in a wide variety of fields, examples may include for the coating of paper cups, and as a capsule material for sustained release fertilizer.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 13, 2023
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Donald R. Allen, Wenji Quan, Bruno R. Pereira, Shigenobu Miura
  • Patent number: 11359088
    Abstract: Composite blends of PBAT (or another similar polyester) with PLA and a carbohydrate-based polymeric material. While PLA is not compostable under home composting conditions (e.g., temperature of 28° C.) on its own, when blended in the manner described herein, it is compositable under such conditions. The addition of the PLA increases the rigidity of the composite blend, as PBAT on its own is so flexible as to be problematic for use in carryout bags, and the like. An exemplary blend may include 30-55% by weight of the carbohydrate-based polymeric material, up to 20%, or up to 15% by weight of PLA, with the balance of polymeric content being PBAT (e.g., 30-60% PBAT). Other components (e.g., an inorganic filler, such as calcium carbonate) may also be included in the blend.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 14, 2022
    Assignee: BIOLOGIQ, INC.
    Inventors: Donald R. Allen, Wenji Quan, Bradford LaPray
  • Publication number: 20210363335
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more “green” sustainable polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film, a bag, a bottle, a cap or lid therefore, a sheet, a box or other container, a plate, a cup, utensils, or the like.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Publication number: 20210324186
    Abstract: Described herein are methods for rendering biodegradable a plastic material that is not itself biodegradable, by blending the plastic material with a carbohydrate-based polymeric material that is formed from one or more starches, and a plasticizer (e.g., glycerin). The carbohydrate-based polymeric material is less crystalline than the starting starch materials, e.g., being substantially amorphous, and having a crystallinity of no more than 20%. Third party testing shows blends of such materials render the entire blend biodegradable, believed to be due to the low crystalline substantially amorphous carbohydrate-based polymeric material breaking the hygroscopic barrier associated with the non-biodegradable plastic material, so that when blended together, both the plastic material and the carbohydrate-based polymeric material are biodegradable.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 21, 2021
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 11111363
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more “green” sustainable polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film, a bag, a bottle, a cap or lid therefore, a sheet, a box or other container, a plate, a cup, utensils, or the like.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: September 7, 2021
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 11046840
    Abstract: Described herein are methods for rendering biodegradable a plastic material that is not itself biodegradable, by blending the plastic material with a carbohydrate-based polymeric material that is formed from one or more starches, and a plasticizer (e.g., glycerin). The carbohydrate-based polymeric material is less crystalline than the starting starch materials, e.g., being substantially amorphous, and having a crystallinity of no more than 20%. Third party testing shows blends of such materials render the entire blend biodegradable, believed to be due to the low crystalline substantially amorphous carbohydrate-based polymeric material breaking the hygroscopic barrier associated with the non-biodegradable plastic material, so that when blended together, both the plastic material and the carbohydrate-based polymeric material are biodegradable.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: June 29, 2021
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 10995201
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more petrochemical-based polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film or bag.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: May 4, 2021
    Assignee: BiologiQ, Inc.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 10919203
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more petrochemical-based polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film or bag.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: February 16, 2021
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Publication number: 20200339803
    Abstract: Composite blends of PBAT (or another similar polyester) with PLA and a carbohydrate-based polymeric material. While PLA is not compostable under home composting conditions (e.g., temperature of 28° C.) on its own, when blended in the manner described herein, it is compositable under such conditions. The addition of the PLA increases the rigidity of the composite blend, as PBAT on its own is so flexible as to be problematic for use in carryout bags, and the like. An exemplary blend may include 30-55% by weight of the carbohydrate-based polymeric material, up to 20%, or up to 15% by weight of PLA, with the balance of polymeric content being PBAT (e.g., 30-60% PBAT). Other components (e.g., an inorganic filler, such as calcium carbonate) may also be included in the blend.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Donald R. Allen, Wenji Quan, Bradford LaPray
  • Publication number: 20200339781
    Abstract: Described herein are blends of starch or starch-based materials with polymeric materials, where the starch or starch-based material is intimately blended with the polymeric material, so as to exhibit very small particles sizes (e.g., less than 2 ?m, or less than 1 ?m) for the starch or starch-based material in the matrix of the polymeric material. Such intimate dispersion of very small particles provides for far more of the particles dispersed more evenly throughout the matrix of the polymeric material, which may enhance various performance characteristics of the blended composite material. Methods of producing articles from such blends exhibiting such small particles and excellent dispersion are also disclosed.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Bradford LaPray, Donald R. Allen, Wenji Quan, Bruno R. Pereira, Shigenobu Miura
  • Publication number: 20200339784
    Abstract: Described herein are blends of carbohydrate-based polymeric materials with other polymeric materials, where the carbohydrate-based polymeric material is intimately blended with the other polymeric material, so as to exhibit very small particles sizes (e.g., less than 2 ?m, or less than 1 ?m) for the carbohydrate-based polymeric material in the matrix of the other polymeric material. Such intimate dispersion of very small particles provides for far more of the particles dispersed more evenly throughout the matrix of the other polymeric material, which may enhance various performance characteristics of the blended composite material, and provide for more consistent achievement of such characteristics, from batch to batch. Methods of producing articles from such blends exhibiting such small particles and excellent dispersion are also disclosed. While suitable for use in a wide variety of fields, examples may include for the coating of paper cups, and as a capsule material for sustained release fertilizer.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Bradford LaPray, Donald R. Allen, Wenji Quan, Bruno R. Pereira, Shigenobu Miura
  • Publication number: 20190194426
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more petrochemical-based polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film or bag.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Bradford LaPray, Wenji Quan
  • Patent number: 10214634
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more petrochemical-based polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film or bag.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 26, 2019
    Assignee: BIOLOGIQ, INC.
    Inventors: Bradford LaPray, Wenji Quan
  • Publication number: 20180100060
    Abstract: Described herein are strength characteristics and biodegradation of articles produced using one or more “green” sustainable polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film, a bag, a bottle, a cap or lid therefore, a sheet, a box or other container, a plate, a cup, utensils, or the like.
    Type: Application
    Filed: December 8, 2017
    Publication date: April 12, 2018
    Inventors: Bradford LaPray, Wenji Quan, Donald R. Allen
  • Patent number: 9875361
    Abstract: A method for providing a social network service includes: (a) setting an access threshold value for a content belonging to a content owner and a weight value for one or more communities of which the content owner is a member; (b) extracting a community of which a content requester is a member from among the communities of which the content owner is a member, when a request for the content is received from the content requester, and calculating an activity value of the content requester for the extracted community; (c) calculating a reputation value for the content requester by using one or more of a number of the extracted communities, a weight value set for the extracted communities, and the calculated activity value; and (d) providing the content requester with authorization to access the content according to a comparison result between the reputation value and the access threshold value.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: January 23, 2018
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventors: MyungSik Yoo, Wenji Quan