Patents Examined by Everett White
  • Method for separating hydrolyzed product of biomass
    Patent number: 11198702
    Abstract: A method for separating hydrolysis product of biomass is provided. The method includes providing a mixture solution containing a hydrolysis product of biomass and a divalent metal salt, adjusting the pH value of the mixture solution to between 1-4.6, and performing a filtering procedure on the mixture solution using a nanofiltration membrane to obtain a concentrated solution and a filtrate, wherein the concentrated solution mainly includes the hydrolysis product of biomass and the filtrate mainly includes the divalent metal salt.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: December 14, 2021
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yen-Ting Kuo, Hou-Peng Wan, Tzu-Yueh Yang, Chien-Yuan Su, Ming-Hua Wang
  • Collagen enhancing agent made from low acyl gellan gum, methods of making and methods of using the same
    Patent number: 11197885
    Abstract: Described herein are materials and methods useful for the treatment of neurodegenerative disorders and bone disorders, as well as healing wounds, in a subject. Materials described herein include polysaccharide digestive products resulting from the enzymatic hydrolysis of low acyl gellan gum. Also described herein are pharmaceutical compositions comprising one or more of such materials, and methods for their preparation and use.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: December 14, 2021
    Assignee: The University of Toledo
    Inventors: Joshua J. Park, Dong-Shik Kim
  • Method of preparing degradable and environment responsive composite microgels
    Patent number: 11191728
    Abstract: A method of preparing degradable and environment responsive composite microgels, belonging to polymer material synthesis and biomaterial technology fields. Firstly, a copolymer of L-malic acid and 6-hydroxyhexanoate is prepared; then, N,N,N?,N?-tetramethyl cystamine is prepared. The copolymer and N,N,N?,N?-tetramethyl cystamine are mixed in an organic solvent to form a mixed solution which is added into excess distilled water to produce composite microgels. The microgels have advantages of mild preparing conditions, fast reaction speed without catalysts, no impurity remained, and controllable degradation rate. The microgels can load anticancer drug doxorubicin hydrochloride, showing environment responsive controlled release due to introduction of carboxyl groups and disulfide bonds.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: December 7, 2021
    Assignee: JIANGNAN UNIVERSITY
    Inventors: Caihua Ni, Zhenle Tian, Gang Wang, Liping Zhang, Ren Liu
  • Method for producing cellulose derivative, and cellulose derivative
    Patent number: 11161917
    Abstract: A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: November 2, 2021
    Assignee: NEC CORPORATION
    Inventors: Shukichi Tanaka, Kiyohiko Toyama, Masatoshi Iji
  • Carboxymethyl cellulose and method of preparation
    Patent number: 11155642
    Abstract: Provided is a method for producing a cellulose derivative. The method includes forming a first reaction product by reacting non-oxidized cellulose with at least one first alkalization agent in the presence of at least one suitable solvent, wherein the first reaction product includes a non-oxidized alkali-cellulose. The method further includes forming a second reaction product by reacting a monohalo-organic compound with a second alkalization agent in a solution, wherein the second reaction product includes a saturated solution and a sediment. The method further includes increasing a temperature of the saturated solution and dissolving at least a portion of the sediment, and reacting the non-oxidized alkali-cellulose with the second reaction product to form an improved carboxymethyl cellulose.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: October 26, 2021
    Assignee: CORE SCIENTIFIC CREATIONS LTD.
    Inventors: Shani Eliyahu-Gross, Yuval Yaskil
  • Regioselectively substituted cellulose esters
    Patent number: 11136414
    Abstract: The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: October 5, 2021
    Assignee: Eastman Chemical Company
    Inventors: Casey Lynn Elkins, Robert Lin, Michael John Rodig, Robert Jacks Sharpe
  • Dissolution of oxidized cellulose and particle preparation by cross-linking with multivalent cations
    Patent number: 11053323
    Abstract: A process for dissolving modified cellulose includes contacting modified cellulose solution with at least one multivalent cation to form a plurality of modified cellulose particles.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: July 6, 2021
    Assignee: Covidien LP
    Inventors: Phillip Blaskovich, Valentino Tramontano, Rachit Ohri, Joshua Kennedy, Christopher M. Henry
  • Method and apparatus for controlling the catalytic oxidation of cellulose
    Patent number: 11046788
    Abstract: A method for controlling the catalytic oxidation of cellulose includes using a heterocyclic nitroxyl compound as catalyst; oxidizing cellulose in a reaction mixture comprising liquid medium, the catalyst and hypochlorite as main oxidant; analyzing one or more oxidative chlorine species dependent on the hypochlorite concentration of the reaction mixture on line in the reaction mixture or in a gas composition which is in contact with the reaction mixture; and controlling supply of hypochlorite to the reaction mixture on the basis of the analysis.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: June 29, 2021
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Isko Kajanto, Markus Nuopponen
  • Thermally stable, dispersible cellulose nanocrystals
    Patent number: 11014993
    Abstract: The present application relates to cellulose nanocrystals and other anionic carbohydrates and methods of preparation thereof. Specifically, in certain embodiments, the cellulose nanocrystals are modified using ion exchange technology to yield thermally stable or task-specific, dispersible cellulose nanocrystals.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: May 25, 2021
    Assignee: AMERICAN UNIVERSITY
    Inventor: Douglas Fox
  • Lipochito-oligosaccharides stimulating arbuscular mycorrhizal symbiosis
    Patent number: 11008356
    Abstract: The invention relates to lipochitooligosaccharides obtainable from arbuscular mycorrhizal fungi, and which are useful for stimulating arbuscular mycorrhizal symbiosis, and lateral root formation.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: May 18, 2021
    Assignees: Institut National de Recherche Pour l'Agriculture, l'Alimentation et Environnement, Centre National de la Recherche Scientifique, Universite Paul Sabatier
    Inventors: Jean Denarie, Fabienne Maillet, Verena Poinsot, Olivier Andre, Guillaume Becard, Monique Gueunier, Laurence Cromer, Alexandra Haouy, Delphine Giraudet
  • Dissolution of oxidized cellulose
    Patent number: 10982012
    Abstract: A process for dissolving modified cellulose is disclosed. The process includes contacting modified cellulose with a solvent in a mixture to form swelled modified cellulose and then contacting the mixture with a salt to dissolve the swelled modified cellulose.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: April 20, 2021
    Assignee: Covidien LP
    Inventors: Valentino J. Tramontano, Joshua Kennedy, Sajida Farooqi, Phillip D. Blaskovich, Rachit Ohri, Daniel S. Costa
  • Cellulose derivative and use thereof
    Patent number: 10982009
    Abstract: To provide a cellulose derivative excellent in thermoplasticity, water resistance and strength (elastic modulus, impact strength), a cellulose derivative, which is obtained by introducing a short-chain organic group (acetyl group), a medium-chain organic group having 3 to 5 carbon atoms and a long-chain organic group having 6 to 30 carbon atoms at the following substitution degrees DSs into a cellulose, is used: Short-chain organic group: 0.7?DSSH?1.5; Medium-chain organic group: 0.5?DSME?2.0; Long-chain organic group: 0.1?DSLO<0.5; and 2.4?DSSH+DSME+DSLO?3.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 20, 2021
    Assignee: NEC CORPORATION
    Inventors: Midori Shimura, Shukichi Tanaka, Kiyohiko Toyama, Masatoshi Iji
  • Treating catalytically oxidized nanofibrillar cellulose hydrogel
    Patent number: 10981135
    Abstract: The invention relates to a method for treating a nanofibrillar cellulose hydrogel, wherein the method comprises the steps of: providing a nanofibrillar cellulose hydrogel, wherein the nanofibrillar cellulose is oxidized nanofibrillar cellulose, wherein the oxidation has been carried out through N-oxyl mediated catalytic oxidation of cellulose-based raw material, and has at most 50 ?mol of aldehyde groups per gram of dry nanofibrillar cellulose; and subjecting the nanofibrillar cellulose hydrogel to a heat treatment.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 20, 2021
    Assignee: UPM-KYMMENE CORPORATION
    Inventor: Isko Kajanto
  • Metal oxide particles with uniform multi-layer polymer coatings
    Patent number: 10968284
    Abstract: The present invention is a multilayered composite comprising porous metal oxide particles that are covalently bonded by way of inorganic ether groups to one or more sites of a first polyhydroxyl-functionalized polymer. This first polymer is in turn covalently bonded by way of inorganic ether groups to one or more sites of a second polyhydroxyl-functionalized polymer. The multilayered composites can be prepared by contacting porous inorganic-oxide particles with a sufficient amount of OH-reactive crosslinking agent to form metal oxide particles imbibed with the crosslinking agent, and then contacting the inorganic-oxide particles with a solution of polyhydroxyl-functionalized polymer under reactive conditions.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 6, 2021
    Assignees: The Regents of the University of California, Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Joseph Jankolovits, Alexander S. Katz, Oz M. Gazit, James C. Bohling, John A. Roper, III
  • Method for producing functionalized nanocrystalline cellulose and functionalized nanocrystalline cellulose thereby produced
    Patent number: 10968283
    Abstract: A method for producing functionalized nanocrystalline cellulose, the method comprising the steps of providing cellulose, mixing said cellulose with a peroxide, thereby producing a reaction mixture, and heating the reaction mixture, and/or exposing the reaction mixture to UV radiation is provided. Functionalized nanocrystalline cellulose produced by this method is also provided.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: April 6, 2021
    Assignee: Anomera Inc.
    Inventors: Mark P. Andrews, Timothy Morse
  • Hypromellose phthalate and method for producing hypromellose phthalate
    Patent number: 10961323
    Abstract: Provided is a method for producing HPMCP capable of reducing the average particle size of HPMCP particles to an intended range without a pulverization step. Specifically provided is a method for producing hypromellose phthalate, comprising an esterification step of reacting hypromellose with an esterification agent in the presence of a catalyst to obtain a reaction solution containing crude hypromellose phthalate, a precipitation step of mixing the reaction solution with water to precipitate the crude hypromellose phthalate, thereby obtaining a hypromellose phthalate suspension, a liquid removal step of removing a liquid from the hypromellose phthalate suspension with a centrifugal decanter to obtain liquid-removed hypromellose phthalate, and a drying step of drying the liquid-removed hypromellose phthalate.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: March 30, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Mitsuhiro Yoshida, Junichi Matsubara
  • Method of disintegrating pulp for use in cellulose acetate production and method of producing cellulose acetate
    Patent number: 10954314
    Abstract: A method of disintegrating pulp for use in cellulose acetate production includes: a primary disintegration step of disintegrating a pulp sheet into pulp pieces having an average area of not more than 45 cm2; and a secondary disintegration step of disintegrating the pulp pieces with an impact shock exerted by a jet mill (20). The jet mill (20) includes: a cylindrical casing (21) provided with an inlet (21d) and an outlet (21e); and a rotor (25) including a plurality of blades (25a) provided on its outer peripheral portion, the plurality of blades (25a) facing an inner peripheral surface of the casing (21).
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: March 23, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Mitsuteru Hosaka, Toshinori Okano, Yuji Ida
  • Hypromellose acetate succinate and method for producing hypromellose acetate succinate
    Patent number: 10934367
    Abstract: Provided is a method for producing HPMCAS capable of reducing the average particle size of HPMCAS particles to an intended range without a pulverization step. Specifically provided is a method for producing hypromellose acetate succinate, comprising an esterification step of reacting hypromellose with an esterification agent in the presence of a catalyst to obtain a reaction solution containing crude hypromellose acetate succinate, a precipitation step of mixing the reaction solution with water to precipitate the crude hypromellose acetate succinate, thereby obtaining a hypromellose acetate succinate suspension, a liquid removal step of removing a liquid from the hypromellose acetate succinate suspension with a centrifugal decanter to obtain liquid-removed hypromellose acetate succinate, and a drying step of drying the liquid-removed hypromellose acetate succinate.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: March 2, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Mitsuhiro Yoshida, Junichi Matsubara, Kazuki Kikuchi
  • Method for producing low polymerization degree cellulose ether
    Patent number: 10906992
    Abstract: There is provided a method for producing a low polymerization degree cellulose ether having a less yellowish appearance and having excellent long-term storage stability through depolymerization of a high polymerization degree cellulose ether with an acid and without requiring an additive other than the acid. More specifically, there is provided a method for producing a low polymerization degree cellulose ether, including a step of depolymerizing a high polymerization degree cellulose ether with an acid to obtain a low polymerization degree cellulose ether mixture and a step of neutralizing the acid present in the low polymerization degree cellulose ether mixture, wherein ultraviolet is applied in the step of depolymerizing or between the steps of depolymerizing and neutralizing.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: February 2, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Taishi Kitaguchi, Akira Kitamura, Shintaro Matsusue, Mitsuhiro Yoshida
  • Cellulose acetate fiber, cellulose acetate fiber molded article, and methods respectively for producing said cellulose acetate fiber and said cellulose acetate fiber molded article
    Patent number: 10889916
    Abstract: Provided are a cellulose acetate fiber and a cellulose acetate fiber molded article which are excellent in water solubility and biodegradability and are small in load onto the natural environment even when allowed to stand still in the environment. The invention provides a cellulose acetate fiber containing cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.3 and a compositional distribution index (CDI) of 2.0 or less as well as a cellulose acetate fiber molded article.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: January 12, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Shizuka Okada, Hiroki Taniguchi, Toshikazu Nakamura