Patents by Inventor Richard HERCHL

Richard HERCHL 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).

  • Patent number: 12116729
    Abstract: A method for providing a treated cellulose-comprising mixed starting material (110), in particular a mixed starting material (110) for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) providing (10) a first starting material (101a) which comprises a lignocellulosic raw material, ii) providing (1) a second starting material (101b) which comprises a cellulose-containing lignin-free product, iii) mixing (15) the first starting material (101a) and the second starting material (101b) to a mixed starting material (101), and iv) at least partially commonly treating (20) the first starting material (101a) and the second starting material (101b) for obtaining the treated mixed starting material (101), in particular a mixed pulp.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: October 15, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Richard Herchl, Gabriele Schild, Christian Weilach
  • Publication number: 20240263360
    Abstract: A recycled mixed textile having cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least two synthetic plastics, a first synthetic plastic of the two synthetic plastics is selectively depleted from the mixed textile and a second synthetic plastic of the two synthetic plastics is partially retained in the mixed textile, and the mixed textile is further processed to comprise the cellulose fibers and the synthetic fibers are the second synthetic plastic.
    Type: Application
    Filed: April 18, 2024
    Publication date: August 8, 2024
    Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
  • Publication number: 20240240399
    Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.
    Type: Application
    Filed: March 29, 2024
    Publication date: July 18, 2024
    Inventors: Richard Herchl, Christoph Klaus-Nietrost, Christian Weilach
  • Patent number: 11987906
    Abstract: A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 21, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11976417
    Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: May 7, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Richard Herchl, Christoph Klaus-Nietrost, Christian Weilach
  • Patent number: 11952714
    Abstract: A process (1, 101, 201) for separating a fibrous target component (21) from textile waste (2, 5) is shown, said textile waste (2, 5) containing the target component (21) and at least one ancillary component (22), whereby the target component (21) consists of water-swellable textile fibers (51) with a density higher than the density of water, the process (1, 101, 201) comprising the steps: a) dispersing the comminuted textile waste (5) in an aqueous solution (7) to obtain a suspension (8) containing the textile waste (5), and b) separating the dispersed textile waste (5) into a high-density target fraction (81) comprising the target component (21), and a low-density residual fraction (82) comprising the at least one ancillary component (22), according to the respective density of said components (21, 22).
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 9, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11828005
    Abstract: A method of producing a chemical pulp from a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and producing regenerated molded bodies from the chemical pulp based on the cellulosic fibers after mechanically separating and chemically separating.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: November 28, 2023
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Publication number: 20230125354
    Abstract: What is shown is a method for the recovery of raw materials from blended textile wastes, which includes the following steps in the given order: a) providing blended textile waste that includes at least a cellulose component and at least a polyester component, b) treating the blended textile waste in an aqueous treatment solution in order to depolymerize the polyester component and dissolve it in the treatment solution, c) separating the cellulose component from the treatment solution and recovering a cellulose raw material, d) filtering the treatment solution in order to remove foreign substances, particularly dyes and metal ions, from the treatment solution, and e) precipitating terephthalic acid from the treatment solution, separating the precipitated terephthalic acid, and recovering a terephthalic-acid-including polyester raw material.
    Type: Application
    Filed: December 3, 2020
    Publication date: April 27, 2023
    Inventors: Richard Herchl, Christoph Klaus-Nietrost, Sabrina Theis, Christian Weilach
  • Publication number: 20230096086
    Abstract: A method of producing a chemical pulp from a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and producing regenerated molded bodies from the chemical pulp based on the cellulosic fibers after mechanically separating and chemically separating.
    Type: Application
    Filed: December 2, 2022
    Publication date: March 30, 2023
    Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
  • Publication number: 20230095901
    Abstract: A regenerated cellulosic molded body of cellulose and at least a part of at least one foreign matter, and is produced by supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath.
    Type: Application
    Filed: December 2, 2022
    Publication date: March 30, 2023
    Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
  • Publication number: 20230025524
    Abstract: The invention relates to a method for the treatment and utilization of waste liquor containing at least polyester degradation products and originating from an alkaline pulping process for the extraction of cellulose raw material from blended textile waste which contains at least a cellulose component and a polyester component. In order to make the method environmentally friendlier and more resource-efficient, it is proposed that the method comprises the following steps: the evaporation of water from the waste liquor in order to precipitate the polyester degradation product from the waste liquor and to obtain a two-phase mixture having an aqueous phase and a solid phase including the polyester degradation product, b) the separation of the solid phase from the liquid phase, and c) the thermal/energetic utilization of the solid phase.
    Type: Application
    Filed: December 3, 2020
    Publication date: January 26, 2023
    Inventors: Richard Herchl, Christoph Klaus-Nietrost, Sabrina Theis, Christian Weilach
  • Patent number: 11519101
    Abstract: Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11519100
    Abstract: Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach, Christian Sperger
  • Patent number: 11519104
    Abstract: Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Publication number: 20220243399
    Abstract: A method for providing a treated cellulose-comprising mixed starting material (110), in particular a mixed starting material (110) for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) providing (10) a first starting material (101a) which comprises a lignocellulosic raw material, ii) providing (1) a second starting material (101b) which comprises a cellulose-containing lignin-free product, iii) mixing (15) the first starting material (101a) and the second starting material (101b) to a mixed starting material (101), and iv) at least partially commonly treating (20) the first starting material (101a) and the second starting material (101b) for obtaining the treated mixed starting material (101), in particular a mixed pulp.
    Type: Application
    Filed: May 29, 2020
    Publication date: August 4, 2022
    Inventors: Richard HERCHL, Gabriele SCHILD, Christian WEILACH
  • Publication number: 20220243395
    Abstract: A method for continuously providing a treated cellulose-comprising starting material (110), in particular as starting material for manufacturing a cellulosic molded body (102), is provided. The method comprises: i) supplying (10) a cellulose-comprising starting material (101), which in particular is a solid matter, with a predefined composition to a reactor device (105), ii) continuously treating (20) the starting material (101) in the reactor device (105), to obtain the treated cellulose-comprising starting material (110), and iii) discharging (30) the treated cellulose-comprising starting material (110) from the reactor device (105).
    Type: Application
    Filed: May 29, 2020
    Publication date: August 4, 2022
    Inventors: Richard HERCHL, Christian WEILACH
  • Publication number: 20220243396
    Abstract: A method for providing a treated cellulose-comprising starting material (110), in particular a starting material for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) supplying a cellulose-comprising starting material (101) which comprises cellulosic fibers, and treating (20) the cellulose-comprising starting material (101), to obtain the treated cellulose-comprising starting material (110), such that the cellulose fibers of the treated cellulose-comprising starting material (110) comprises a predetermined fiber length distribution. Furthermore, a method for manufacturing a cellulosic molded body (102), a treated cellulose-comprising starting material (110), and a use of used textiles are described.
    Type: Application
    Filed: May 29, 2020
    Publication date: August 4, 2022
    Inventors: Richard HERCHL, Christian WEILACH
  • Publication number: 20220235519
    Abstract: A method for manufacturing a cellulosic paper material (150) is described. The method comprises: i) providing (105) used textiles as starting material (101), wherein the used textiles comprise cellulose and non-cellulosic foreign matters (in particular synthetic plastics and/or metal oxides), ii) at least partially depleting (120) the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material (110), and iii) forming (170) the cellulosic paper material (150) from the depleted starting material (110). Furthermore, a cellulosic paper material (150) made of recycled used textiles and a use of used textiles for providing a cellulosic paper material (150) are described.
    Type: Application
    Filed: May 29, 2020
    Publication date: July 28, 2022
    Inventors: Richard HERCHL, Christian WEILACH
  • Patent number: 11321658
    Abstract: Method of identifying a product which comprises cellulose, wherein in the method a data set is determined which is indicative for multiple constituents of the product or a preform of the product, and the data set which is correlated with the product or the preform is stored in a database.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 3, 2022
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Publication number: 20220049381
    Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 17, 2022
    Inventors: Richard Herchl, Christoph Klaus-Nietrost, Christian Weilach