Patents Examined by Kelechi C. Egwim
  • Patent number: 11421083
    Abstract: A PETx polymer including a main backbone which is a first poly-L-lysine, and a side chain which is sequentially connected with a first polyethylene glycol and a second poly-L-lysine, where the second poly-L-lysine is saturately connected with a second polyethylene glycol and a third polyethylene glycol with no remaining amino groups, and the third polyethylene glycol is connected with a functional group at its end, where the first poly-L-lysine and the second poly-L-lysine have the same or different chain lengths, and the first polyethylene glycol, the second polyethylene glycol and the third polyethylene glycol have the same or different chain lengths. Preferably, the PETx polymer is PLL-g-{PEGk-PLL-g-[(PEGj-biological recognition group)y %(PEGi)1-y %]}x %, where i, j, k, m, and n are all integers greater than or equal to 1, j is not equal to i, and x and y are all greater than 0 and less than 100.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: August 23, 2022
    Assignee: TIANJIN UNIVERSITY
    Inventors: Xuexin Duan, Wenwei Pan
  • Patent number: 11421118
    Abstract: A microparticle comprised of dried cellulose nanocrystals agglomerated together and forming said microparticle is provided, wherein the CNCs are surfaced-reduced carboxylated CNCs, and wherein the microparticle is nanoredispersible into its constituting cellulose nanocrystals in both aqueous and non-aqueous solvents. A method for producing nanoredispersible microparticles comprised of dried CNCs is also provided.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: August 23, 2022
    Assignee: ANOMERA INC.
    Inventors: Mark P. Andrews, Timothy Morse, Amir Khabibullin, Muntaser Farooque, Monika Rak
  • Patent number: 11421059
    Abstract: An acrylic copolymer is provided. The acrylic copolymer includes: a main monomer-derived repeating unit; and a chain transfer agent-derived part, wherein the main monomer-derived repeating unit includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinking monomer-derived repeating unit, the chain transfer agent-derived part is derived from a chain transfer agent having a carbonothioylthio group, and the chain transfer agent-derived part is included in an amount of 0.03 parts by weight to 0.08 parts by weight with respect to 100 parts by weight of the main monomer-derived repeating unit. A method of preparing the same, and an acrylic copolymer composition including the same is also provided.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: August 23, 2022
    Inventors: Sang Jin Shin, Jung Su Han, Seung Uk Yeu, Yong Seok Jung
  • Patent number: 11414503
    Abstract: A modified conjugated diene-based polymer, including a coupling polymer, wherein a ratio of the coupling polymer, obtained by gel permeation chromatography (GPC), is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, when a peak top molecular weight, obtained by the GPC, of the coupling polymer of the modified conjugated diene-based polymer is represented by Mp1 and a peak top molecular weight of a non-coupling polymer is represented by Mp2, (Mp1/Mp2)?3.4, and a shrinking factor (g?) is less than 0.60.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: August 16, 2022
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Shinichi Sekikawa, Miki Kyo
  • Patent number: 11414499
    Abstract: A cross-linkable nitrile rubber composition that includes a nitrile group-containing copolymer rubber (A), silica (B1), clay (B2), calcium carbonate (B3), and a polyamine-based cross-linking agent (C). A total amount of the silica (B1), the clay (B2), and the calcium carbonate (B3) is 150 to 200 parts by weight with respect to 100 parts by weight of the nitrile group-containing copolymer rubber (A), a content ratio of the silica (B1) is greater than 0 wt % and 50 wt % or less with respect to the total amount of the silica (B1), the clay (B2), and the calcium carbonate (B3), and a content ratio of the clay (B2) and the calcium carbonate (B3) is 30:70 to 90:10 in a weight ratio of “clay (B2):calcium carbonate (B3)”.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 16, 2022
    Assignee: ZEON CORPORATION
    Inventor: Yoshio Fukumine
  • Patent number: 11414510
    Abstract: The present invention relates to a modified conjugated diene-based polymer, and more particularly, to a modified conjugated diene-based polymer prepared by continuous polymerization and having a specific polymer structure and molecular weight distribution degree and shape, and thus, having remarkable processability and narrow molecular weight distribution, and thus, having excellent physical properties, and a rubber composition including the same.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 16, 2022
    Inventors: Jung Hwan Oh, You Seok Seo, Jae Hoon Choe, Min Soo Kim, No Ma Kim
  • Patent number: 11407920
    Abstract: An object of the present invention is to provide a paint which is excellent in various performances such as resistance to various organic solvents and hydraulic fluid, corrosion resistance, weather resistance, heat resistance, adhesion to substrates, and coating film appearance, and which in particular, can be suitably used for aircraft applications. Specifically, the invention provides a paint which contains, as an essential component of a main agent, a polyester resin (A) having a hydroxyl value in a range of 150 to 400 mg KOH/g and a weight average molecular weight (Mw) in a range of 500 to 5,000, and a polyisocyanate compound (B) as an essential component of a curing agent; an aircraft paint using the paint; and an aircraft using the aircraft paint.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: August 9, 2022
    Assignee: DIC Corporation
    Inventors: Kan Takeuchi, Ikue Hamamoto
  • Patent number: 11396611
    Abstract: The present invention relates to a high-performance sound insulation paint showing a sound absorption effect, and provides a sound insulation paint for coating including 15 to 25 weight % of soda-lime borosilicate glass, 36 to 46 weight % of a binder, 8 to 15 weight % of titanium dioxide, 8 to 15 weight % of aluminum potassium silicate, 20 to 30 weight % of water, and 2 to 5 weight % of Texanol.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: July 26, 2022
    Assignee: WAKO CO., LTD.
    Inventor: Tae Man Son
  • Patent number: 11396480
    Abstract: This disclosure relates to an inorganic-organic metal phosphate ceramic coating from the reaction of an inorganic phosphate of the formulas (i) Am(H2PO4)m.nH2O or (ii) AH3(PO4)2.nH2O; where A is ammonium or an m-valent metal element; m=1, 2, or 3; and n is 0 to 25; and at least one metal oxide or hydroxide represented by the formula B2mOm or B(OH)2m, where B is a 2m-valent metal; and m=1 or 1.5; thereof; and at least one polymer capable of reacting with at least the one metal oxide or hydroxide; or a first organic precursor combined with the inorganic phosphate and a second organic precursor combined with the at least one metal oxide or hydroxide, the second organic precursor configured to chemically react with the one or more first organic precursor.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: July 26, 2022
    Assignee: LATITUDE 18, INC.
    Inventors: Sameerkumar V. Patel, Vadym Drozd
  • Patent number: 11384188
    Abstract: The invention provides an aqueous resin dispersion which can form a coating film excellent in adhesion to a polypropylene base material, and water resistance, and has excellent particle stability. Specifically, it provides an aqueous resin dispersion in which an olefin polymer (A), and a polymer (C) containing a constituent unit derived from a radically polymerizable monomer (B) represented by the following general formula (1) are dispersed in an aqueous medium. (In the general formula (1), R is a hydrogen atom or a methyl group, and X is a straight chain or branched alkylene group having 3 to 5 carbon atoms; and n is an integer of 1 to 20.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 12, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akira Harada, Shinsuke Haraguchi, Motomi Tanaka
  • Patent number: 11384165
    Abstract: A stable aqueous dispersion of multi-stage polymeric particles comprising a polymer and an oligomer, and an aqueous freeze-thaw stable coating composition comprising the aqueous dispersion providing coatings made therefrom with acceptable scrub resistance.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: July 12, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Han Liu, Dan Liu, Qingwei Zhang, Zhi Juan Gong, Xiangting Dong, Ling Li, Han Lv
  • Patent number: 11370896
    Abstract: An ionic nanocomposite comprising a nanomaterial comprising charged groups disposed on at least a portion of a surface of the nanomaterial and a polymer material comprising charged pendant group and/or end functionalized charged groups, where the charged groups of the nanomaterial and the charged pendant groups of the polymer material have opposite charges and the nanomaterial and polymer material are connected by one or more ionic bonds. A nanomaterial can be nanoparticles comprising sulfate groups disposed on at least a portion of the surface of the nanoparticles. The polymer material can be a polymer with pendant imidazolium groups. An ionic nanocomposite can be present as a film (e.g., a thin film). An ionic nanocomposite can be used in devices. A nanocomposite can be used in various coating application.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 28, 2022
    Assignees: CORNELL UNIVERSITY, UNIVERSITÉ DE MONS
    Inventors: Jérémy Odent, Emmanuel P. Giannelis, Jean-Marie Raquez, Philippe Dubois
  • Patent number: 11370866
    Abstract: A process for the preparation of a diene elastomer modified by a 1,3-dipolar compound is provided. The process comprises a thermomechanical kneading of a mixture of a diene elastomer and of a 1,3-dipolar compound in an internal mixer in order to form a modified diene elastomer, followed by an extrusion of the modified diene elastomer.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 28, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Rokhiyatou Said-Diatta
  • Patent number: 11365314
    Abstract: The present invention provides an aqueous polymer composition and an aqueous coating composition comprising such aqueous polymer composition that shows balanced stain resistance, freeze-thaw stability, and anti-clogging properties.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: June 21, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Zhen Qian, Wei Cui, Jinfei Wang, Jianming Xu, Jintao Liu, Ling Li, Jingchao Zhang
  • Patent number: 11352489
    Abstract: A thermoplastic acrylic resin is provided. The thermoplastic acrylic resin is a graft copolymer in which a stem polymer is an acrylic resin containing acrylonitrile and another ethylenically unsaturated monomer, and a branch polymer is a polymer composed of an ethylenically unsaturated monomer. The acrylonitrile is contained in an amount of 35 mass % or more and 84.5 mass % or less, the other ethylenically unsaturated monomer is contained in an amount of 15 mass % or more and 64.5 mass % or less, and the polymer composed of an ethylenically unsaturated monomer is contained in an amount of 0.5 mass % or more and 40 mass % or less. Thus, provided are a thermoplastic acrylic resin having improved melt-processability without compromising heat resistance, a method for producing the thermoplastic acrylic resin, a thermoplastic acrylic resin composition, a molded body, an acrylic fiber, and a method for producing the acrylic fiber.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: June 7, 2022
    Assignee: KANEKA CORPORATION
    Inventors: Sota Okumura, Yusuke Hirai, Takamasa Soejima
  • Patent number: 11345769
    Abstract: Disclosed herein is an additive for a paint or stain composition or for a colorant composition. The additive is polymerized from at least one acrylate monomer and a chain transfer agent. The additive has a weight molecular weight from about 2,000 Daltons to about 5,000 Daltons, and the chain transfer agent comprises a hydrogen-sulfur functionality and is present from about 8 to about 20 parts per hundred parts of monomers. The additive's glass transition temperature ranges from about ?50° C. to about ?10° C. and the additive is hydrophobic. The additive is added to the colorant composition to minimize tip drying at the colorant canisters, and is added to paint or stain composition as an open time extender.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: May 31, 2022
    Assignee: Columbia Insurance Company
    Inventors: Gianna Pastena, Brian Munoz, Hrire Gharapetian, Thomas Penny
  • Patent number: 11345798
    Abstract: A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: May 31, 2022
    Assignee: NOVA Chemicals (International) S.A.
    Inventor: XiaoChuan Wang
  • Patent number: 11339291
    Abstract: Viscosity peaking during initial formulation of condensation curing compositions employing silanol-functional organopolysiloxanes and alkoxysilanes is avoided by employing specific titanium compounds. A curing catalyst which may be a titanium compound or a tin compound may be added following disappearance of silanol functionality.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: May 24, 2022
    Assignee: Wacker Chemie AG
    Inventors: Jian Nie, Lei Yang
  • Patent number: 11339238
    Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and a rubber composition including the same.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 24, 2022
    Inventors: Ho Young Lee, Ki Seok Son, Da Won Chai, No Ma Kim, Sun Keun Kim, Youk Reol Na, Hyoung Woo Lee, Heung Yeal Choi
  • Patent number: 11332606
    Abstract: A clear binder, in divided form, that is solid when cold, and to the different ways in which it is formed. Also, the method for transporting and/or storing and/or handling the binder, as well as to the uses of the binder for road and/or industrial applications.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 17, 2022
    Assignee: TOTAL MARKETING SERVICES
    Inventor: Laurence Lapalu