Cellulose Or Derivative Patents (Class 536/56)
  • Patent number: 11932706
    Abstract: Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with surprisingly low mechanical energy input. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: March 19, 2024
    Assignee: GranBio Intellectual Property Holdings, LLC
    Inventors: Kimberly Nelson, Theodora Retsina, Vesa Pylkkanen, Ryan O'Connor
  • Patent number: 11739197
    Abstract: The present invention relates to methods for processing plant and/or micro-organism derived cellulose materials into rheology/structuring agents. More in particular, the present invention relates to methods wherein plant and/or micro-organism derived cellulose material is co-processed with carboxycellulose. The methods of the present invention provide a variety of benefits, in terms of process efficiency and scalability as well as in relation to the properties of the materials that are obtainable using these methods. For instance, it has been found that (highly) concentrated products produced using the method of the invention are easily (re)dispersible in water and aqueous systems to regain much of the cellulose component's original rheological performance.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: August 29, 2023
    Inventors: Conrardus Hubertus Joseph Theeuwen, Paulus Pieter De Wit, Gijsbert Adriaan Van Ingen, Franciscus Adrianus Ludovicus Maria Staps
  • Patent number: 11708506
    Abstract: Disclosed herein are embodiments of a composition comprising at least one cellulose material (such as a cellulose nanomaterial) and an optional inorganic salt component. Some embodiments of the composition can further comprise additional components, with some embodiments further comprising a non-starch polysaccharide (e.g., methyl cellulose carboxymethyl cellulose or other cellulose derivative, chitosan, or the like), a surfactant, a plasticizer, an antimicrobial component, or any combination thereof. The disclosed compositions are useful for forming edible coatings/films on plants, plant parts, and other objects. The disclosed compositions and coatings/films made using the compositions are effective at protecting fresh and processed produce and other substances and products, from various different types of food processing damage (and the deleterious effects associated therewith).
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: July 25, 2023
    Assignee: Oregon State University
    Inventors: Yanyun Zhao, John Simonsen, George Cavender, Jooyeoun Jung, Leslie H. Fuchigami
  • Patent number: 11628134
    Abstract: An object of the present invention is to provide fine particles excellent in biodegradability and touch feeling. Disclosed are cellulose acetate particles, the cellulose acetate particles have an average particle size of 80 nm or more and 100 ?m or less, a sphericity of 0.7 or more and 1.0 or less, and a surface smoothness of 80% or more and 100% or less, and the cellulose acetate has a total degree of acetyl substitution of 0.7 or more and 2.9 or less.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: April 18, 2023
    Inventors: Keiko Kobayashi, Masaya Omura
  • Patent number: 11554082
    Abstract: The present invention relates to a dental material comprising a thermoset methacrylate-based polymer resin and cellulose nanocrystals, wherein the cellulose nanocrystals have been modified to be hydrophobic.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 17, 2023
    Assignee: STICK TECH OY
    Inventor: Eija Sailynoja
  • Patent number: 11529433
    Abstract: A cellulose-containing article for treating an area of skin, wherein the article comprises BNC in an amount of at least 1% by weight and at most 15% by weight, comprises fluid in an amount of at least 85% by weight and at most 99% by weight, has an average thickness of at least 0.5 mm and at most 8 mm, wherein the BNC is of microbial origin.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: December 20, 2022
    Assignee: JeNaCell GmbH
    Inventor: Nadine Hessler
  • Patent number: 11434348
    Abstract: Cellulose derivative particles including an alkoxy group having 2 or more carbons or an acyl group having 3 or more carbons, wherein the cellulose derivative particles have an average particle size of 80 nm or greater and 100 ?m or less, a sphericity of 70% or greater and 100% or less, and a surface smoothness of 80% or greater and 100% or less; and a total substitution degree of the cellulose derivative is 0.7 or greater and 3 or less.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: September 6, 2022
    Inventors: Keiko Kobayashi, Masaya Omura
  • 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: 11278475
    Abstract: Disclosed are personal care compositions comprising a fibrous material of natural origin and obtained from plants. The fibrous material comprises micro-scaled and/or nano-scaled fibril agglomerates. Such compositions show pleasant skin feel and comfort during and after application, as well as fast drying and fast absorption into skin. The compositions obtained are also particularly well suited for the topical delivery of cosmetic and pharmaceutical active substances into skin. Additionally, a method to obtain said personal care composition is disclosed.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: March 22, 2022
    Assignee: Weidmann Holding AG
    Inventors: Stefan Truniger, Tobias Wolfinger
  • Patent number: 11098179
    Abstract: The present invention relates to a novel stable colloidal polysaccharide suspension containing ?(1?3)-glucan, a cost-effective method for its preparation, and possible uses of these polysaccharide suspensions.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: August 24, 2021
    Inventors: Martina Opietnik, Johann Männer, Markus Hager, Sigrid Redlinger, Gert Kroner
  • Patent number: 10968567
    Abstract: A method for preparing ?-cellulose, a spinning composition, and a fiber material are provided. The method for preparing ?-cellulose includes providing a coffee residue; subjecting the coffee residue to a decolorization treatment, obtaining a white powder; reacting the white powder with an alkaline solution, obtaining a mixture; filtering the mixture to produce a filter cake; and baking the filter cake to obtain ?-cellulose.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: April 6, 2021
    Inventors: Shi-Kuang Hwang, Tien-Ching Lu, Kai-Jen Hsiao, Jing-Wen Tang
  • Patent number: 10851496
    Abstract: A reduced energy method produces highly refined cellulose particles from fruit or vegetable mass by providing an initial cellulose mass of particles containing moisture having number average particle diameter of between 0.25 and 1.9 cm and having a moisture content of less than 80% water for the cellulose mass, heating the cellulose mass to between 170 F to less than 212 F to swell and internally shear fiber structure to produce a highly refined cellulose fiber mass having a total dietary fiber (TDF) content greater than 15% as measured by AOAC 991.43 and a water holding capacity greater than three parts water per part fiber as measured by AACC 56-30.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: December 1, 2020
    Inventor: Brock M. Lundberg
  • Patent number: 10772768
    Abstract: A nonwoven fabric. The nonwoven fabric can include a first surface and a second surface and a visually discernible pattern of three-dimensional features on one of the first or second surface. Each of the three-dimensional features can define a microzone comprising a first region and a second region. The first and second regions can have a difference in values for an intensive property, and wherein in at least one of the microzones, the first region exhibits a Contact Angle of greater than 90 degrees, as measured by the Contact Angle Test Method detailed herein, and the second region exhibits a Time to Wick of less than 10 seconds, as measured by the Time to Wick Test Method detailed herein.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 15, 2020
    Assignee: The Procter & Gamble Company
    Inventors: Arman Ashraf, Paul Thomas Weisman, Adrien Grenier, Martin Ian James, Stefano Michele Sinigaglia
  • Patent number: 10697122
    Abstract: A method and apparatus for contacting and reacting fine cellulosic material with acid to produce partly-hydrolyzed cellulose, in which the cellulose is compressed to form higher density material, resulting in reduced consumption of acid and increased uniformity of reaction times. Cellulosic material, such as ground wood pulp, is compressed to reduce the interstitial spaces therein. The compressed material is contacted with an acid, such as sulfuric acid, which is allowed to wick into the interstitial spaces and react with the cellulose to produce partly-hydrolyzed cellulose.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: June 30, 2020
    Assignee: NORAM Engineering and Constructors Ltd.
    Inventors: James M. Lockhart, James T. Wearing, Ali Gulamhusein, Evan J. Hobenshield, Durk Devries
  • Patent number: 10669404
    Abstract: The surface hydrophobization of cellulose nanocrystals (CNCs) by carboxylic acids, biodiesel, or plant oils was conducted via there herein disclosed green process using an one-pot synthetic method. In the process, an aqueous lactic acid syrup served as a solvent to provide a stable and well-dispersed water suspension of CNCs and participated in esterification reactions to produce an intermediate product of polylactic acid (PLA) oligomer grafted CNCs (CNC-g-PLA). This solvent and intermediate product system allows for an in situ solvent exchange from water to lactic acid without prior drying of the CNCs and a subsequent efficient esterification reaction of CNCs with carboxylic acids or esters having a long hydrocarbon chain (FAs). Another advantage of the disclosed process is the ability to reuse the reagents in the subsequent reaction in order to reduce the production cost.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: June 2, 2020
    Assignee: Purdue Research Foundation
    Inventors: Jeffrey Paul Youngblood, Youngman Yoo
  • Patent number: 10597820
    Abstract: A method of producing bleached microcrystalline cellulose which method comprises neutralizing or alkalizing an acidic microcrystalline production reaction mixture slurry, typically produced by acid hydrolysis or by electronic beam irradiation, followed by adding an oxidant to such reaction mixture. This practice of this method permits the production of microcrystalline cellulose having desirable color stability as well as compression characteristics suitable for pharmaceutical binder use from paper grade and other low purity pulps.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 24, 2020
    Inventors: Zheng Tan, Simon Eustace, Michael Sestrick, Jeremy Ondov
  • Patent number: 10584184
    Abstract: A process for dissolving modified cellulose 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. The dissolved modified cellulose is used to form at least one of a predictably degrading coating, film, or a fiber.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: March 10, 2020
    Assignee: Covidien LP
    Inventors: Valentino Tramontano, Phillip Blaskovich, Rachit Ohri, Joshua Kennedy, Sajida Farooqi
  • Patent number: 10420864
    Abstract: An anchorage device is provided that is configured to surround an implantable medical device. The anchorage device includes a first component having a first substrate and a second component having a second substrate. The second component is positioned within the first component. One of the first and second substrates includes a hemostatic agent and the other of the first and second substrates includes an active pharmaceutical ingredient. Kits, systems and methods are disclosed.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: September 24, 2019
    Assignee: MEDTRONIC, INC.
    Inventors: Satish Pulapura, Fatima Buevich, Jorie S. Soskin, Franklin R. Mansfield, Kai R. Worrell, Charlie Wood
  • Patent number: 10410102
    Abstract: A method of manufacturing a component comprising forming an identifier internally within the component in a predetermined manner, wherein the identifier can be used to subsequently identify or authenticate the component.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: September 10, 2019
    Assignee: Rolls-Royce plc
    Inventor: Andres Kaldvee
  • Patent number: 10273632
    Abstract: Objective of the method is a procedure for production of nanocellulose, where energy consumption and other costs of production are lower than in methods presented previously. It is based on separation of minute particles from cellulose or plant based ingredients by effects of light, thermal energy or water-soluble organic solvents. These particles act as precursors of nanocellulose. After separation they form in dry state aerosol, in liquid media a suspension, and combine to chains, microfibrils and secondarily formed fibrils, which form further networks with each other or with other fibers and fibrils. Applications are based on their action as reinforcing structure in composites, paper, cardboard, paints and other materials, on forming thin-layer films for electrical, electronic and medical applications, or on viscosity, surface and permeability properties.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 30, 2019
    Assignee: NANOREFIX OY
    Inventor: Yrjö Mälkki
  • Patent number: 10160934
    Abstract: The aim of the invention is to improve the cleaning power of washing and cleaning agents, especially with regard to bleachable stains, while avoiding any damage to the textile treated with said washing and cleaning agents. This is substantially achieved by using an electrolytically bleachable species generated by a redox reaction from an anionically substituted 1-hydroxy-2,2,6,6-tetramethylpiperidine, 2,2,6,6-tetramethylpiperidine-N-oxide, or (2,2,6,6-tetramethylpiperidine-1-yl)oxyl.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: December 25, 2018
    Assignee: Henkel AG & Co. KGaA
    Inventors: Iwona Spill, Mareile Job, Peter Schmiedel, Thomas Gerke, Guido Grundmeier, Markus Voigt
  • Patent number: 10113005
    Abstract: The present invention relates to a method for producing dewatered microfibrillated cellulose (MFC) comprising i) providing an aqueous MFC slurry, ii) optionally dewatering said MFC slurry by mechanical means to provide a partly dewatered MFC slurry, and iii) subjecting the MFC slurry or the partly dewatered MFC slurry to one or more drying operations by means of one or more absorbing materials to produce dewatered MFC. The produced MFC can be redispersed in water without deteriorating the material properties of the MFC.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 30, 2018
    Assignee: Kemira Oyj
    Inventors: Martin Häggblom, Veli-Matti Vuorenpalo
  • Patent number: 9914786
    Abstract: The invention relates to a dry or slurry process to prepare phosphate-crosslinked cellulose ethers from a cellulose starting material comprising the steps of adding an alkalizing agent to the cellulose starting material to achieve mercerization, adding an ethehfying agent to the reaction mixture to achieve etherification of the cellulose, and adding a crosslinking agent to the reaction mixture to achieve crosslinking of the cellulose, wherein at least part of the alkalizing agent is added to the cellulose starting material before the etherification and/or crosslinking reactions take place to obtain alkalized cellulose; the crosslinking agent and the etherifying agent are added one after the other in random order or simultaneously; the crosslinking agent is an alkali metal thmetaphosphate; and the crosslinking and etherification steps are performed at an elevated temperature.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: March 13, 2018
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventor: Paulus Pieter De Wit
  • Patent number: 9702062
    Abstract: A process for producing purified polysaccharide fiber of the present invention includes bringing a polysaccharide solution, which is obtained by dissolving a polysaccharide raw material in a liquid containing an ionic liquid, into contact with a solidification liquid containing an ionic liquid, and performing dry-wet spinning on polysaccharide, in which the concentration of the ionic liquid in the solidification liquid is 0.4% by weight to 70% by weight, and a distance D from a site where the polysaccharide solution is extruded in the form of fiber to a site where the extruded polysaccharide solution comes into contact with the solidification liquid is 50 mm to 120 mm.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: July 11, 2017
    Inventors: Kenichi Sugimoto, Mitsuharu Koide
  • Patent number: 9631177
    Abstract: The present invention relates material that is useful in drug delivery compositions. The material comprises cellulose nanofibers and/or derivatives thereof, wherein the cellulose nanofibers are in a form of a hydrogel or membrane. The invention also provides methods for producing these materials and compositions and uses thereof.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: April 25, 2017
    Inventors: Marjo Yliperttula, Patrick Laurén, Madhushree Bhattacharya, Yanru Lou, Antti Laukkanen
  • Patent number: 9567707
    Abstract: A method of recovering purified partly-hydrolyzed cellulose (36) from a composition (14) comprising partly-hydrolyzed cellulose and an acid, such as sulfuric acid. A base (28) having a cation that forms a precipitate with the anion of the acid is added to the composition. For example, a base such as barium hydroxide is added to form a sulfate precipitate. The precipitate (38) is then separated from the partly-hydrolyzed cellulose (36), thus reducing its acid content. The method may include additional steps of centrifugation (18) of the composition, breaking-up agglomerations (44) in the composition after precipitation, and dialysis (42).
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: February 14, 2017
    Assignee: NORAM Engineering and Constructors Ltd.
    Inventor: James M. Lockhart
  • Patent number: 9481963
    Abstract: The present invention relates to a manufacturing method of a carboxymethyl cellulose nonwoven fabric which includes the carboxymethylation of cellulose fibers and the subsequent paper-making process to prepare a carboxymethyl cellulose nonwoven fabric. Comparing with the conventional method involving carboxymethylation of a nonwoven fabric, the method of the present invention has convenience and easiness of the process and thus enables production on a large scale. Further, the carboxymethyl cellulose nonwoven fabric manufactured by the present invention is susceptible to gelation upon contact with body fluids or water and thus useful as a medical nonwoven fabric or a mask pack.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 1, 2016
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jung Nam Im, Song Jun Doh, Dae Young Lim, Ji Yun Lee
  • Patent number: 9469693
    Abstract: There is disclosed a process for the derivatization of cellulose comprising the sequential steps: a) mixing cellulose with a viscosity below 900 ml/g with an aqueous solution to obtain a liquid, wherein particles comprising cellulose in said liquid have a diameter of maximum 200 nm, wherein the temperature of the aqueous solution is below 20° C., and wherein the pH of the aqueous solution is above 12, b) subjecting the liquid to at least one of the steps: i) decreasing the pH of the liquid with at least 1 pH unit, ii) increasing the temperature by at least 20° C., and c) derivatization of the cellulose. Advantages include that there is provided the possibility to derivatize cellulose faster and to a greater extent after the treatment. Further the yield is improved. The product quality is improved and the manufacture is cheaper and easier.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 18, 2016
    Assignee: Re:Newcell Lux S.a.r.l.
    Inventors: Gunnar Henriksson, Mikael Lindstrom
  • Patent number: 9435585
    Abstract: A microwave dryer and a microwave drying method are provided to evaporate water by using the penetrability of microwave. A wind screen (14) arranged in a dryer body (6) is used as a heat storage body to store heat temporarily when the material in the dryer body (6) is heated. Hot air in the dryer body (6) is extracted by an air discharging system and redelivered to the dryer body (6) from the bottom of the dryer. The specific weight of the material after water is evaporated is reduced, so the dried material can be carried out of the dryer body (6) if enough wind power is provided.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: September 6, 2016
    Inventor: Kwok Fai Lam
  • Patent number: 9347176
    Abstract: The GreenBox+ technology is suitable to extract hemicellulose sugars prior to pulping of biomass into pulp products. The revenue obtainable from the sugar stream can significantly improve the economics of a pulp and paper mill. An initial extraction and recovery of sugars is followed by production of a pulp product with similar or better properties. Other co-products such as acetates and furfural are also possible. Some variations provide a process for co-producing pulp and hemicellulosic sugars from biomass, comprising: digesting the biomass in the presence of steam and/or hot water to extract hemicellulose into a liquid phase; washing the extracted solids, thereby generating a liquid wash filtrate and washed solids; separating the liquid wash filtrate from the washed solids; refining the washed solids at a refining pH of about 4 or higher, thereby generating pulp; and hydrolyzing the hemicellulose to generate hemicellulosic fermentable sugars.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 24, 2016
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Theodora Retsina, Vesa Pylkkanen, Steven R. Rutherford
  • Patent number: 9341622
    Abstract: An object of the present invention is to provide a hydrophilic cellulose derivative fine particle having a small particle size, a dispersion liquid thereof and a dispersion body thereof; and provide a diagnostic reagent composed of the hydrophilic particle, which is excellent in storage stability and does not require excess components, such as an emulsifier or surfactant. The cellulose derivative fine particle of the present invention is a cellulose derivative fine particle comprising a cellulose derivative with a part of hydroxyl groups of cellulose being substituted with a substituent, wherein the average particle diameter is from 9 to 1,000 nm; and the diagnostic reagent of the present invention is a diagnostic reagent obtained by loading a substance differentially interacting with a test object substance on the above-described cellulose derivative fine particle.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: May 17, 2016
    Inventors: Yoshiyuki Shiomi, Toshihiko Matsui, Masanori Doi
  • Patent number: 9328963
    Abstract: Disclosed are methods and apparatuses for recovering and reusing energy when processing materials with reactive fluids. More particularly, disclosed are methods and apparatuses for recovering and reusing energy from processes in which materials comprising polymers and/or oligomers are treated with a reactive fluid.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: May 3, 2016
    Assignee: Renmatix, Inc.
    Inventors: Frederick John Moesler, Michel Adam Simard, Manuk Colakyan, Paul Anthony Neilson
  • Patent number: 9303127
    Abstract: The present invention is directed to a method to extract lignin from lignocellulosic biomass using lactic acid.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: April 5, 2016
    Assignee: Colorado School of Mines
    Inventors: John R. Dorgan, Michael Paul Eyser, Clayton Perbix
  • Patent number: 9296829
    Abstract: This invention provides a method for hydrophilic cellulose fibers capable of inhibiting decrease in the degree of polymerization and whiteness degree of oxidized cellulose fibers in oxidized cellulose in which a carbon at position 6 of each glucose unit in the cellulose fiber starting material is oxidized to a carboxyl group, the method comprising (A) the step of performing dehalogenation together with reduction, the dehalogenation comprising mixing a dehalogenation agent, a reducing agent, and oxidized cellulose fibers, and removing halogens remaining in the oxidized cellulose fibers, and the reduction comprising reducing a ketone group at position 2 and/or position 3 of each glucose unit in the oxidized cellulose fibers.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: March 29, 2016
    Assignee: GUNZE LIMITED
    Inventors: Akira Isogai, Chiaki Tanaka, Yoshinari Yui
  • Patent number: 9206414
    Abstract: Anisotropic nanocomposite hydrogel materials are created using a process in which a hydrogel-forming material is crosslinked in the presence of nanoscale cellulose and subsequently thermally cycled under an applied tensile strain. Such materials are capable of exhibiting high mechanical and viscoelastic anisotropy, increased stiffness when subjected to large strain, and are suitable for a broad range of soft tissue replacement applications. In addition controlled release of bioactive agents properties can be designed into medical devices fabricated from such nanocomposite materials.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 8, 2015
    Inventors: Wan-Kei Wan, Leonardo Millon
  • Patent number: 9175096
    Abstract: This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: November 3, 2015
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Michael Eugene Donelson, Maryna Grigorievna Gorbunova, Thauming Kuo, Bin Wang
  • Patent number: 9163355
    Abstract: A composite structure mainly composed of hydratable fine fibers in the form of microfibril and a water swellable solid body, the fibers being obtained from cellulose or derivatives thereof, and at least part of the surface of the solid body is covered with the fine fibers. The absorbent composite can be formed in various form of, for example, particle, pellet, sheet and the like, especially of a sheet type with a supporting sheet of a non-woven fabric. The present invention further provides a method of making the composite structure.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: October 20, 2015
    Assignee: DSG International Limited
    Inventors: Migaku Suzuki, Ryoichi Matsumoto, Shingo Mori
  • Patent number: 9107978
    Abstract: The present invention relates to an implant comprising: a sheet of bacterial cellulose having a macro-pattern positioned on at least a portion thereof. The invention also relates to a method for making such an implant.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: August 18, 2015
    Assignee: Sofradim Production
    Inventors: Yves Bayon, Sébastien Ladet, Olivier Lefranc, Philippe Gravagna
  • Patent number: 9095733
    Abstract: Provided herein are microalgal skin care compositions and methods of improving the health and appearance of skin. Also provided are methods of using polysaccharides for applications such as topical personal care products, cosmetics, and wrinkle reduction compositions. The invention also provides novel decolorized microalgal compositions useful for improving the health and appearance of skin. The invention also includes insoluble polysaccharide particles for application to human skin.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 4, 2015
    Assignee: Solazyme, Inc.
    Inventors: Jeff Avila, Geoffrey Brooks, Anthony G. Day, Aravind Somanchi
  • Publication number: 20150144563
    Abstract: Articles containing soil adsorbing polymers, and more particularly, articles, for example nonwovens, such as paper towels, wovens, and/or sponges and/or article-forming components thereof that comprise a durably bonded soil adsorbing polymer, article-forming components used to make such articles, and processes for making same are provided.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Inventors: Robin Lynn McKIERNAN, Robert Joseph McCHAIN, Steven Daryl SMITH
  • Publication number: 20150147311
    Abstract: A process for mechanical destructuring of cellulosic biomass was developed that makes use of a short application of high compression, impact, and shearing forces. The biomass may be destructured using a specific energy input that is less than 40% of the total combustible energy of the biomass. The destructured biomass, with or without saccharification and/or in-feed glycosyl hydrolase enzymes, may be used in feed applications.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 28, 2015
    Inventors: Wathudura Indika Namal De Silva, Paul Joseph Fagan, F. Glenn Gallagher, Zheng-Zheng Huang, Guangliang Gary Liu, Aaron Perelman, Luis Fernando Romero Millan, Anton Shpilsky, Daniel A. Slanac, Maria Walsh
  • Publication number: 20150147558
    Abstract: The present invention relates to a method of obtaining a solid material based on a polymer having its cellobiose units exhibiting the following characteristics: at least some of the cellobiose units have at least one carboxylic acid function attached to the C6 carbon, the other C6 carbons having a primary alcohol function attached thereto; and at least some of the cellobiose units have at least one of the two rings open between the C2 and C3 carbons, the other C2 and C3 carbons forming a ring and having an alcohol function attached thereto. Such a material, advantageously a textile, may be used as a compress.
    Type: Application
    Filed: June 3, 2013
    Publication date: May 28, 2015
    Applicant: SYMATESE
    Inventors: Vithuy Dao, Robert Michelot, Benjamin Herbage, Fabien Fuchez, Eric Perouse
  • Publication number: 20150148458
    Abstract: The present invention provides a production method for purified polysaccharide fibers in which carbon disulfide emission is suppressed while efficiently producing purified polysaccharide fibers having excellent strength, purified polysaccharide fibers produced by using the production method, a fiber-rubber complex using the purified polysaccharide fibers, and a tire having excellent tire characteristics using the fiber-rubber complex. The production method for purified polysaccharide fibers of the present invention is a production method for purified polysaccharide fibers of wet-spinning or dry-wet-spinning polysaccharide by bringing a polysaccharide solution obtained by dissolving a polysaccharide raw material in a liquid including an ionic liquid into contact with a solidification liquid including an ionic liquid, in which a concentration of the ionic liquid in the solidification liquid is 0.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 28, 2015
    Inventors: Mitsuharu Koide, Kenichi Sugimoto
  • Publication number: 20150141531
    Abstract: The instant disclosure relates to a process for manufacturing a fibrillated cellulose powder suitable for being dispersed in an aqueous medium, comprising a step of adding a monovalent salt to a fibrillated cellulose suspension, followed by a lyophilisation step.
    Type: Application
    Filed: June 24, 2013
    Publication date: May 21, 2015
    Inventors: Julien Bras, Naceur Belgacem, Karim Missoum
  • Publication number: 20150126728
    Abstract: A surfactant treated bleached softwood kraft pulp fiber, useful as a starting material In the production of cellulose derivatives including cellulose ether, cellulose esters and viscose, is disclosed. Methods for making the kraft pulp fiber and products made from it are also described.
    Type: Application
    Filed: April 5, 2013
    Publication date: May 7, 2015
    Inventors: Arthur James Nonni, Charles Edward Courchene, Christopher Michael Slone, Philip Reed Campbell, Steven Chad Dowdle, Joel Mark Engle
  • Publication number: 20150114907
    Abstract: Highly porous, lightweight, and sustainable organosilane-coated organic aerogels with ultra-low densities and excellent material properties and methods for preparing them are provided. The aerogels are modified to have a superhydrophobic and superoleophilic surface, thus leading to an extremely high affinity for oils and/or organic solvents.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Inventors: Shaoqin GONG, Zhiyong Cai, Qifeng Zheng
  • Publication number: 20150110900
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 gm, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and an organic carbon content from residual impurities, which is defined by the total organic carbon content (%) during 1% NaOH extraction to the total organic carbon content (%) during pure water extraction, of over 0.07 to 0.3%.
    Type: Application
    Filed: May 30, 2013
    Publication date: April 23, 2015
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
  • Patent number: 9012188
    Abstract: The present invention relates to producing chemicals and biofuels from wood material, e.g. mixed forest biomass. Specifically, the invention concerns a process for conditioning spent liquor produced by SO2-ethanol-water (SEW) fractionation of wood chips for fermentation to butanol, ethanol and acetone/isopropanol (so called ABE process) by Clostridia bacteria.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 21, 2015
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Adriaan Van Heiningen, Evangelos Sklavounos
  • Patent number: 8993747
    Abstract: The present invention relates to a process for the production of alkali cellulose for the production of alkali cellulose and, optionally, cellulose ethers from cellulose in the presence of alkali and, if applicable, with alkylating and/or hydroxyalkylating agent(s) comprising the reaction of a cellulose with an alkali metal hydroxide, wherein the alkali metal hydroxide is mixed with cellulose in a mixing apparatus, the mixing apparatus (1) having an upper region (20, 102a, 202a) with a first cross-section and a lower region (21, 102b, 202b) with a second cross-section, the second cross-section being the same as or smaller than the first cross-section and comprising at least one non-horizontally oriented mixing device (23, 27, 121, 221, 224).
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 31, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Matthias Sprehe, Bettina Hoelzer
  • Patent number: 8992728
    Abstract: The cellulose nanofiber production method of the present invention comprises an oxidation treatment step for oxidizing native cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent that oxidizes aldehyde groups, and a dispersion step for dispersing the native cellulose in a medium following the oxidation treatment step. According to the production method of the present invention, a cellulose nanofiber is provided that has long fibers and demonstrates high strength.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: March 31, 2015
    Assignee: The University of Tokyo
    Inventors: Akira Isogai, Tsuguyuki Saito