Patents Examined by Leo B. Tentoni
  • Patent number: 11519103
    Abstract: The present disclosure relates to a process for preparing carbon fibers. The process involves blending a carbon nano-material with a carbon material to obtain a homogenous blend, heating the homogenous blend to obtain mesophase pitch having particles with reduced mesophase sphere size followed by spinning the mesophase pitch to obtain the pitch fibers. The pitch fibers are then carbonized to obtain the carbon fibers. The carbon fibers prepared by the process of the present disclosure have improved tensile properties as compared to the conventional pitch based carbon fibers.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: December 6, 2022
    Assignee: Reliance Industries Limited
    Inventors: Swanand Dilip Patil, Rupesh Arun Khare, Padmavathi Nandigam, Asmita Ashok Khanvilkar, Sreekumar Thaliyil Veedu
  • 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
  • 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: 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: 11505883
    Abstract: Disclosed herein are improvements to processes and equipment for the manufacture of composite nonwoven webs comprising a mixture of two or more different fibers and formed from at least two streams of air-entrained fibers. Adjacent the perimeter of an exit port of one of the fiber streams are located a series of spaced tabs and apertures. As a first stream of air-entrained fibers pass the series of tabs and apertures, vortices are formed therein. When mixed with a second stream of air-entrained fibers, the vortices within the first stream of fibers causes increased mixing of the fibers, helping to drive the first fibers deeper into the second stream of air-entrained fibers.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 22, 2022
    Assignee: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventor: Bryan D. Haynes
  • Patent number: 11492737
    Abstract: A method of dissolving lignocellulosic biomass waste includes obtaining raw lignocellulosic biomass waste, reducing a size of the biomass waste to provide a biomass particle size of less than about 200 ?m; using dimethyl sulfoxide (DMSO), sodium hydroxide (NaOH) and trifluoroacetic acid (TFA) solvents to dissolve the biomass particles and achieve a dissolved lignocellulose solution. The present method dissolves at least about 94% of the lignocellulose fraction in the waste biomass. In an embodiment, the biomass particle size can be about 180 ?m.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: November 8, 2022
    Assignee: UNITED ARAB EMIRATES UNIVERSITY
    Inventors: Emmanuel Galiwango, Ali H. Al-Marzouqi, Sabeera Haris
  • Patent number: 11486059
    Abstract: The invention relates to a method and to a device for stabilizing precursor fibers for the production of carbon fibers. In the method, precursor fibers are first heated to a first temperature and held at the temperature for a predefined duration. Subsequently, the precursor fibers are heated to at least one second temperature, which is higher than the first temperature, and held at said temperature for a predefined duration. During each heating and between the heating steps, the precursor fibers are in a gas atmosphere having a negative pressure in the range between 12 mbar and 300 mbar and having an oxygen partial pressure of 2.5 to 63 mbar. The device has at least one evacuable, elongate vacuum chamber for feeding the precursor fibers through, at least two lock units and at least one heating unit.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 1, 2022
    Assignee: CENTROTHERM INTERNATIONAL AG
    Inventors: Andreas Keller, Gunter Fauth, Uwe Ziegler
  • Patent number: 11479620
    Abstract: A photoinitiated polymerizable composition for 3D printing, the polymerizable composition comprising a nanogel component that comprises nanogel particles, wherein the nanogel particles comprise a copolymer with polymerizable reactive groups suitable for reacting with each other or a reactive diluent monomer, a reactive oligomer, a resin, or a combination thereof that is present in the polymerizable composition upon photoinitiation, wherein the nanogel component has a glass transition temperature that is in a range of about ?50 C and about 20 C and an average molecular weight that is in a range of about 10 kg/mol and about 100 kg/mol, and wherein the nanoparticles have an average hydrodynamic radius that is in a range of 1 nm to about 5 nm.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: October 25, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF COLORADO
    Inventors: Jeffrey W. Stansbury, Parag K. Shah, Robert R. McLeod
  • Patent number: 11473222
    Abstract: A copper ion-complexed poly gamma-glutamic acid (?-PGA)/chitosan (CS)/cotton blended antibacterial knitted fabric and a preparation method includes chitosan that is crosslinked with poly gamma-glutamic acid, then a copper-ammonia complex ion solution is added to prepare a spinning solution. The spinning solution is wet spun and then stretched, washed with water, finished, washed with water, and dried to get copper ion-complexed poly gamma-glutamic acid/chitosan composite fibers. The blended antibacterial knitted fabric is then prepared by using cotton fiber yarns and the composite fibers. There is a very high coordination coefficient between carboxyl groups of gamma-PGA and amino groups of CS, so the structure is stable. Poly-gamma glutamic acid can be used as water-retaining agent and heavy metal ion adsorbent, which can increase the loading rate of copper ions.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: October 18, 2022
    Assignee: Qufu Normal University
    Inventors: Ge Yang, Ruixia Gao, Chengchuan Che, Jinfeng Liu, Zhijin Gong, Yang Sun, Qi Chen
  • Patent number: 11473219
    Abstract: The present application provides methods for producing polybenzimidazole carbon fiber that does not require infusibilization treatment.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: October 18, 2022
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Toshihira Irisawa, Hiroaki Hatori, Yasushi Soneda, Masaya Kodama
  • Patent number: 11466386
    Abstract: This disclosure relates to air-assisted spinnerets and spinneret arrays for electrospinning. In some embodiments, the air-assisted spinnerets and spinneret arrays are incorporated in electrospinning systems and/or electrospinning machines. Methods of making and using the same are also described herein.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: October 11, 2022
    Assignee: Nanopareil, LLC
    Inventors: Hao Fong, Todd J. Menkhaus, Yong Zhao, Nyle Hedin, Craig Arnold
  • Patent number: 11459672
    Abstract: A method of preparing a structure, more particularly, a method of preparing a structure capable of ensuring a space for carrying an electrode active material by a simple method which includes an electrospinning process using a double nozzle electrospinning device and a heat treatment process.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: October 4, 2022
    Assignees: LG ENERGY SOLUTION, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Eunkyung Park, Jang Wook Choi, Sung Hyeon Park, Minehul Jang, Suk Il Youn, Byoungkuk Son, Se Ho Park
  • Patent number: 11453961
    Abstract: The application relates to a method and apparatus for manufacturing a natural fiber based staple fibers. The application further relates to the staple fibers, staple fiber based raw wool and products comprising such. A method comprises providing a cellulose suspension (101, 310, 510) including water, refined cellulose fibrils and at least one rheology modifier, directing the cellulose suspension through a nozzle (102, 320, 520) onto a surface (300, 400, 500), drying the cellulose suspension onto the surface (103, 300, 400, 500) for forming a fiber (350, 550), and cutting the cellulose suspension on the surface for forming staple fibers (105).
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: September 27, 2022
    Assignee: SPINNOVA OY
    Inventors: Johanna Liukkonen, Sanna Haavisto, Pasi Selenius, Juha Salmela, Janne Poranen, Arto Salminen, Marko Myllys, Pia Vento, Karri Björklund
  • Patent number: 11441242
    Abstract: The present invention provides a method for manufacturing a polyacetal fiber in which whiteness irregularity is improved. One embodiment of the present invention provides a method for manufacturing a polyacetal fiber, wherein the method includes a discharge step, a takeup step, a stretching step, and a winding step, the steps being continuously performed, an oxymethylene copolymer being used as the raw material of the polyacetal fiber, the oxymethylene copolymer having an oxymethylene unit and an oxyethylene unit, the content of the oxyethylene unit being 0.5-7.0 moles to 100 moles of the oxymethylene unit, the roller temperature of a stretching unit used in the stretching step being 130-155° C., and operation parameters of the method being set so as to satisfy a prescribed numerical formula.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 13, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Akira Ito, Daisuke Sunaga, Sunao Mikami
  • Patent number: 11441241
    Abstract: A method of electrospinning (40) is provided, and an electrospinning device (1; 30). The method comprises (i) holding (41) a liquid comprising a polymer melt or a polymer solution in a container (2), (ii) letting out (42) a stream of the liquid from the container through at least one nozzle (3), (iii) creating (43) a voltage difference between the nozzle (3) and a collecting surface (4), (iv) collecting (44) electro spun material coming from the nozzle (3) so as to form a fibrous structure (8) on the collecting surface (4), and (v) directing (45) a laser beam (13) towards the collecting surface (4) so as to locally remove a part of the fibrous structure (8).
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 13, 2022
    Assignee: Innovative Mechanical Engineering Technologies B.V.
    Inventors: Paul Johannes Franciscus Maria Janssen, Marc Simonet, Ramon Hubertus Mathijs Solberg
  • Patent number: 11432611
    Abstract: The present invention relates to a thermoplastic elastomer yarn with improved unwinding, weaving and yarn shrinking property, and a manufacturing method thereof. According to the present invention, the thermoplastic elastomer yarn according to the present invention is excellent in improved unwinding, weaving and yarn shrinking property. Furthermore, the thermoplastic elastomer yarn according to the present invention is excellent in yarn shrinkage rate, unwinding, weaving, tensile strength and elongation rate to be adequate for manufacturing textile fabric and footwear in terms of physical properties.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 6, 2022
    Assignee: JEONGSAN INTERNATIONAL Co., Ltd.
    Inventors: Gu Hwan Kim, Yong In Cho, Chan Won Lee
  • Patent number: 11427694
    Abstract: A method of manufacturing bulked continuous carpet filament, in various embodiments, comprises: (A) providing an expanded surface area extruder; (B) providing a spinning machine having an inlet that is operatively coupled to an expanded surface area extruder outlet; (C) using a pressure regulation system to reduce the pressure within the expanded surface area extruder; (D) passing a plurality of flakes comprising recycled PET through the expanded surface area extruder to at least partially melt the plurality of flakes to form a polymer melt; and (E) substantially immediately after passing the plurality of flakes through the expanded surface area extruder, using the spinning machine to form the polymer melt into bulked continuous carpet filament. In some embodiments, the method may include passing the plurality of flakes comprising recycled PET through a PET crystallizer prior to extrusion.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: August 30, 2022
    Assignee: Aladdin Manufacturing Corporation
    Inventor: Thomas R. Clark
  • Patent number: 11427936
    Abstract: Expanded, nanofiber structures are provided as well as methods of use thereof and methods of making.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 30, 2022
    Assignee: BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA
    Inventor: Jingwei Xie
  • Patent number: 11426913
    Abstract: A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) washing a plurality of flakes of recycled PET; (B) providing a PET crystallizer; (C) after the step of washing the plurality of flakes, passing the plurality of flakes of recycled PET through the PET crystallizer; (D) at least partially melting the plurality of flakes into a polymer melt; (E) providing a multi-rotating screw (MRS) extruder having an MRS section; and a vacuum pump in communication with the MRS section; (F) using the vacuum pump to reduce a pressure within the MRS Section; (G) after the step of passing the plurality of flakes through the PET crystallizer, passing the polymer melt through the MRS Section; and (H) after the step of passing the polymer melt through the MRS extruder, forming the polymer melt into bulked continuous carpet filament.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: August 30, 2022
    Assignee: Aladdin Manufacturing Corporation
    Inventor: Thomas R. Clark
  • Patent number: 11427937
    Abstract: Described herein are portable apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Portable apparatuses that may be used to create fibers are described.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 30, 2022
    Assignee: The Board of Regents of the University of Texas System
    Inventors: Karen Lozano, Gregory Potter, Javier Alonzo Ortega