Patents Examined by Terressa Boykin
  • Patent number: 12291631
    Abstract: A reclaiming agent is formed by grafting thiol groups onto styrene-butadiene rubber (SBR). The reclaiming agent has a weight average molecular weight of 1000 to 120000, which can be a random copolymer or a block copolymer. 100 parts by weight of styrene-butadiene rubber can be reacted with 0.1 to 50 parts by weight of the reclaiming agent to form a reclaimed rubber.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: May 6, 2025
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yi-Ting Wei, Jyh-Horng Wu, Yao-Zu Wu, Ming-Tsong Leu, You-Shan Cai
  • Patent number: 12281207
    Abstract: The present disclosure relates to methods of removing brominated contaminants from polystyrene waste and recovering the brominated contaminants. The present disclosure further relates to methods of recycling polystyrene waste, wherein the recycling comprises retention of brominated contaminants or removal of contaminants. The present disclosure also relates to use of monocyclic aromatic benzenic solvents in the removal and/or recovery of brominated contaminants from polystyrene waste and in the recycling of polystyrene waste. Moreover, the present disclosure relates to use of the recovered brominated contaminants in the manufacture of polystyrene products such as insulation.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: April 22, 2025
    Assignee: POLYSTYVERT INC.
    Inventors: Roland Cöté, Jean-Mathieu Pin
  • Patent number: 12275826
    Abstract: This polyester resin comprises a bis(2-hydroxyethyl)terephthalate monomer which is obtained by depolymerization of waste polyester and which has a diethylene glycol ester content adjusted to be a certain level or less. The polyester resin, despite of being a recycled resin, has the same level of quality as the original resin and thus can be used in manufacturing articles in various fields.
    Type: Grant
    Filed: March 3, 2023
    Date of Patent: April 15, 2025
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Da-Young Hwang, Ji-Hun Kim, Kwang-Woo Park, Yoo Jin Lee, Joong Ki Lee
  • Patent number: 12275166
    Abstract: Provided herein is a method of recycling additively manufactured articles or recovered coating material that comprises a crosslinked polymer formed from a single-cure resin comprising a reactive blocked prepolymer, into a regenerated resin useful for additive manufacturing. Recyclable light-polymerizable resins, methods of making recyclable objects from such resins, and methods for sustainable manufacturing are also provided.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: April 15, 2025
    Assignee: Carbon, Inc.
    Inventors: Justin Poelma, Jason P. Rolland, Rick Hubertus Nicolas Curvers, Joseph M. DeSimone
  • Patent number: 12275689
    Abstract: The invention relates to a method for recycling polyurethane material waste (18a) for producing chemical feedstock for the production of isocyanates (10a) and then polyurethanes (16a), in which method, proceeding from polyurethane material waste (18a), carbon dioxide (1a) and hydrocarbons (1c) are generated by pyrolysis (1), the carbon dioxide (1a; 4a) is converted by electrolysis (5) into carbon monoxide (7b) and hydrogen (7a), as appropriate, the carbon monoxide (7b; 7c) obtained is converted via phosgene to isocyanate (10a) and the isocyanate (10a) can be further processed into new polyurethane material (16a).
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: April 15, 2025
    Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
    Inventors: Andreas Bulan, Rainer Weber
  • Patent number: 12269921
    Abstract: The polycarbonate copolymer of the present invention comprises: a unit derived from at least one type of primary dihydroxyl compound; and a unit derived from at least two types of secondary dihydroxyl compounds, wherein the polycarbonate copolymer has a pencil hardness of H or greater, when a specimen is measured according to the pencil hardness test (ISO 15184), and a glass transition temperature (Tg) of about 90° C. to about 160° C., measured according to ISO 11357. The polycarbonate copolymer has excellent heat resistance, scratch resistance, moldability, light resistance, weather resistance, transparency, mechanical strength, and the like.
    Type: Grant
    Filed: September 24, 2024
    Date of Patent: April 8, 2025
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Jin Seo Lee, Do Kyoung Kim, Do Hyun Seo, Min Jae Jeong, Seung Hwan Moon
  • Patent number: 12269926
    Abstract: Method to produce a polymeric product starting from a primary heterogeneous mixture comprising polymeric material, comprising fragmentation into desired sizing, mechanical primary selection of the fragmented material and plastification, obtaining a densified material which is then subjected to quenching.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: April 8, 2025
    Assignee: I.BLU S.R.L.
    Inventors: Paolo Gosparini, Mirko Bottolo, Elia Gosparini
  • Patent number: 12269925
    Abstract: Biocompatible and biodegradable polymers are provided herein as compositions, methods, and systems for making the compositions. These polymers can be adjustably stable and used in medical applications as adhesives and sealants, and in non-medical applications. Radical polymerization protocols, and two-step cationic and radical polymerization protocols, are provided for the creation of stable, polydisulfide polymers, which can be done in aqueous solution and at ambient and in vivo temperatures ranging, for example, from 0° C. to 37° C. The compositions are biocompatible and can be used as fast curing, biocompatible and biodegradable adhesives and sealants suitable for use in the consumer, industrial, military and medical arts, namely as a functional biomaterial, sustainable plastic, surgical superglue, bone adhesive, pressure-sensitive adhesive, structural adhesive, and other relevant sustainable materials with closed-loop recycling.
    Type: Grant
    Filed: August 13, 2024
    Date of Patent: April 8, 2025
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Phillip B. Messersmith, Subhajit Pal
  • Patent number: 12264225
    Abstract: A depolymerization reaction of a polyester input with an organocatalyst and an alcohol solvent produces (i) a recycled monomeric or oligomeric diester from the polyester, (ii) the organocatalyst for reuse, and (iii) the alcohol solvent, which may also be reused. The presence of volatile impurities, such as water, acetyl aldehyde, and organic solvents can interfere with the success of the depolymerization reaction. A pre-reaction distillation step removes volatile impurities from the polyester input resulting in an efficient depolymerization reaction with consistency among batches. The polyester input may be further treated with a water azeotrope to remove water from the polyester input prior to the pre-reaction distillation.
    Type: Grant
    Filed: October 8, 2023
    Date of Patent: April 1, 2025
    Assignee: Taclov, LLC
    Inventors: Gregory Breyta, Rudy J. Wojtecki
  • Patent number: 12258445
    Abstract: This disclosure relates to a curable composition that includes at least one poly(arylene ether) copolymer, at least one phosphorus-containing flame retardant, and at least one radical initiator. This disclosure also relates to using the composition to form a film, a laminate, a prepreg, and/or a circuit board.
    Type: Grant
    Filed: November 14, 2023
    Date of Patent: March 25, 2025
    Assignee: AGC Multi Material America, Inc.
    Inventors: Laibao Zhang, Kevin Bivona, Yoji Nakajima, Tomoaki Nakanishi, Gregory Roy Almen, Wei Qiang
  • Patent number: 12247103
    Abstract: A polyimide precursor solution includes a polyimide precursor having a glass transition temperature Tg of equal to or higher than 300° C. after imidization, an aqueous solvent containing water, an organic amine compound, and resin particles having a volume average particle size of equal to or less than 100 nm.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: March 11, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kosaku Yoshimura, Yasunobu Kashima, Takahiro Ishizuka
  • Patent number: 12240950
    Abstract: A polymer composition of: a. 50-96 wt % of a recycled polypropylene; b. 4-50 wt % of talcum; e. 0-10 wt % of additives; wherein the additives are PEs, PE-MAs, PP-MAs, stabilizers, peroxides, CaOs or colorants; wherein the talcum has a D50 of less than 4 micron (ISO13317-3) and wherein the wt % is relative to the total weight of the polymer composition 50-90 wt % of a recycled polypropylene.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: March 4, 2025
    Assignee: QCP Holding B.V.
    Inventors: Franciscus Elisabeth Jacobus Essers, Martinus Hendrikus Maria Van Enckevort, Marc Peter August Houtermans, Johannes Venerius
  • Patent number: 12240936
    Abstract: The invention relates to medical aids, in particular compression products, such as compression stockings or bandages. Specifically, the invention provides a compression product comprising an elastic component or material that comprises polyurethane polymers and shows a delayed continuous relaxation behaviour. The invention furthermore provides polyurethane polymers containing N-diol having a delayed continuous relaxation behavior and corresponding quaternized polyurethane polymers, a process for producing the polyurethane polymers, a blend with elastane, as well as uses thereof.
    Type: Grant
    Filed: July 15, 2023
    Date of Patent: March 4, 2025
    Assignee: MEDI GMBH & CO. KG
    Inventors: Christa Huger, Angelika Scherm, Seema Agarwal, Andreas Greiner, Pin Hu
  • Patent number: 12240810
    Abstract: Chiral polyvinylpyrrolidinone (CSPVP), complexes of CSPVP with a core species, such as a bimetallic nanocluster catalyst, and enantioselective oxidation reactions utilizing such complexes are disclosed. The catalytic complexes have exhibited the ability to achieve reaction products have a very high degree of optical purifies. These reaction products can be used as reagents in the synthesis of complex organic molecules, such as bioactive products, and C—H bond oxidation of complex molecules including various drugs and natural products.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 4, 2025
    Assignee: Kansas State University Research
    Inventor: Duy H. Hua
  • Patent number: 12240945
    Abstract: Provided is a compound represented by General Formula (1) in General Formula (1), Ar1 and Ar2 independently represent a group selected from the following Formulae,
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: March 4, 2025
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shintaro Maekawa, Yoshiyuki Totani, Kosuke Mano
  • Patent number: 12240966
    Abstract: A cellulose fiber composite recycled resin having excellent strength, and a method for producing the same. The cellulose fiber composite recycled resin contains a recycled resin and a mixture of fibrous cellulose, at least one of resin powders and resin pellets, and at least one substance selected from the group consisting of phthalic acid, phthalates, derivatives of phthalic acid, and derivatives of phthalates. For producing this composite resin, at least one of resin powders and resin pellets are added to a slurry of cellulose fibers to obtain a first mixture, a recycled resin is mixed into the first mixture to obtain a second mixture, and the second mixture is kneaded, wherein part or all of the cellulose fibers are fine fibers.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: March 4, 2025
    Assignee: Daio Paper Corporation
    Inventors: Yu Ochiai, Ikko Matsusue, Junya Okawa
  • Patent number: 12234328
    Abstract: Polyethylene composition comprising at least 50 wt. % of polyethylene based on the total weight of the polyethylene composition, and having a density of at least 0.910 g/cm3; a melt index MI2 ranging from 3.0 to 60.0 g/10 min; an unsaturation index higher than 2,000 wherein the unsaturation index is the product of the Mn in Dalton and the vinyl unsaturation units per 1,000 carbon atoms as determined by ASTM D6248-98:2004; a complex viscosity at 0.1 rad/sec at 190° C. ranging from 200 to 20,000 Pa·s; and a ratio of complex viscosity at a frequency of 0.01 rad/sec to the complex viscosity at a frequency of 100 rad/sec of at most 8.0, said ratio being measured at 190° C.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: February 25, 2025
    Assignees: TOTALENERGIES ONETECH, CENTRE NATIONAL DE LARECHERCHE SCIENTIFIQUE(CNRS), UNIVERSITÉ CLAUDE BERNARDLYON 1 (UCBL), UNIVERSITÉ JEAN MONNETSAINT-ETIENNE, INSTITUT NATIONAL DESSCIENCES APPLIQUÉES DE LYON(INSA LYON)
    Inventors: Olivier Lhost, Yves Trolez, Pascal Navez, Philippe Cassagnau, Karim Delage, Mohammad Abou-Taha
  • Patent number: 12221516
    Abstract: A method for degrading polyethylene terephthalate is provided. The method includes: providing polyethylene terephthalate material, providing a catalyst composite including a porous carrier having a pore size of 45 ? to 250 ? and a metal compound including at least one selected from a group consisting of zinc oxide, zinc hydroxide, zinc carbonate, magnesium oxide, calcium oxide, zirconium oxide, and titanium dioxide, in which the metal oxide is loaded on the porous carrier; and performing a degradation reaction, in which the polyethylene terephthalate material is reacted with the catalyst composite in the presence of an alcohol solvent.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: February 11, 2025
    Assignee: Industrial Technology Research Institute
    Inventors: Chien-Wei Hsu, Ssu-Ting Lin, Ying-Chieh Lee
  • Patent number: 12215190
    Abstract: Squaric acid-based polymers and their use in electrode materials and/or electrolyte compositions, as well as their production processes are described herein. Also described are electrode materials, electrodes, electrolyte compositions, electrochemical cells, electrochemical accumulators, and optoelectronic devices comprising the polymers and their uses.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: February 4, 2025
    Assignees: HYDRO-QUÉBEC, MURATA MANUFACTURING CO., LTD.
    Inventors: Jean-Christophe Daigle, Antoine Lafleur-Lambert, Sylviane Rochon, Yuichiro Asakawa, Charlotte Mallet, Karim Zaghib
  • Patent number: 12215197
    Abstract: The present invention relates to a crystalline, two dimensional polymer of Formula I and a process for the preparation thereof.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: February 4, 2025
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Santhosh Babu Sukumaran, Karayamkodath Chandran Ranjeesh