Patents Examined by Everett White
  • Patent number: 9334584
    Abstract: This invention pertains to a novel processing for preparing fibers from poly(?(1?3)glucan). The fibers prepared according to the invention, have “cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The process comprises solution spinning a 5-20% solids concentration of poly(?(1?3)glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%, and coagulating the spun fiber in an acid coagulation liquid.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: May 10, 2016
    Inventors: John P. O'Brien, Kathleen Opper
  • Patent number: 9328459
    Abstract: Carboxylated, mercerized cellulose fiber having at least 12 meq/100 g of carboxyl substitution at the C-6 position of the anhydroglucose units, which includes at least 20% cellulose II, may be produced by catalytically carboxylating mercerized cellulose fiber in at least two catalytic carboxylation stages in a continuous series in which the pH is adjusted, and a primary oxoammonium salt catalyst (or precursor thereof) and secondary oxidant is added, at the beginning of each stage. Optionally, the carboxylated, mercerized cellulose may be made substantially free of aldehyde groups by means of a stabilizing step following the final carboxylation stage, in which aldehyde groups present in the fibers are converted to carboxyl groups.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 3, 2016
    Assignee: Weyerhaeuser NR Company
    Inventor: S. Ananda Weerawarna
  • Patent number: 9303093
    Abstract: The present invention relates to a new method for preparing microcrystalline cellulose, comprising a prior step of compaction of the cellulose before degradation of the glucose chains and obtaining the suitable degree of polymerization. It is also described that the method of the invention allows a considerable reduction in the consumption of energy, water and possible chemicals which are used for reducing the degree of polymerization. The microcrystalline cellulose obtained can be used as a pharmaceutical excipient in tablets, and presents disintegration features comparable to those of the microcrystalline cellulose obtained by a spraying process.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: April 5, 2016
    Inventors: Giuseppe Frangioni, Alexandre P. Frangioni
  • 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: 9234051
    Abstract: Methods for purifying fucoidan in extracts from brown seaweed are disclosed. In particular, methods of purifying fucoidan in the extract to remove heavy metal ions, bacterial and endotoxin contaminants, and other impurities are disclosed. The methods include the use of a chelating agent, selective precipitation, and filtration.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: January 12, 2016
    Inventors: Patrick N. Shaklee, Jennifer Bahr-Davidson, Srinivasa Prasad, Kirk W. Johnson
  • Patent number: 9200084
    Abstract: The present invention relates to method for the preparation of a particulate reversibly-crosslinked polymeric material comprising: treating a particulate water-soluble hydroxyl-functional polymer in a liquid phase comprising a solvent mixture in that the hydroxyl-functional polymer is insoluble containing an organic solvent and water; a tetracarboxylic acid dianhydride represented by formula (I), 10 (I) wherein: U and V are independently selected from CH, N and P; 15 X is selected from a single bond, a saturated divalent (C1-C10) hydrocarbon group, O, S, NR, and PR, wherein R is selected from hydrogen and (C1-C4) alkyl; n and m are independently selected from 0 and 1; w is 1 or 2 with the proviso that; 20 if w is 1 then Y is X and if w is 2 then Y is selected from H and (C1-C4) alkyl, whereby there is no bond between both Y; and optionally a catalyst; to form a particulate reversibly-crosslinked polymeric material and 25 to a particulate reversibly-crosslinked polymeric material obtainable thereby.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 1, 2015
    Inventors: Purnendu Mukherjee, Eric P. Wasserman
  • Patent number: 9181351
    Abstract: A cellulose resin produced by binding cellulose or a derivative thereof and cardanol or a derivative thereof by using a hydroxy group of the cellulose or a derivative thereof and a hydroxy group of the cardanol or a derivative thereof, in which carbon atoms to which the hydroxy groups are bound are mutually linked via a carbonate bond or urethane bond formed by using the hydroxy groups.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 10, 2015
    Inventors: Shukichi Tanaka, Sungil Moon, Masatoshi Iji
  • Patent number: 9161562
    Abstract: The invention relates to extracts, in particular non-nutrient phytochemicals, form sugar cane or sugar beet waste products, such as molasses, sugar mud and bagasse, which have Glycemic Index (GI) lowering properties and their use as sweeteners and in foods containing sugar.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: October 20, 2015
    Assignee: Horizon Science Pty Ltd
    Inventors: David Kannar, Barry James Kitchen
  • Patent number: 9138705
    Abstract: A solute is precipitated from a solution of a solute, a solvent, and a non-solvent by preparing the solution and introducing the solution into a precipitation chamber contain a supercritical fluid.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 22, 2015
    Inventors: Yi Li, Footim Chau, Aizheng Chen, Junyan Hu, Tsuiyan Lau
  • Patent number: 9139661
    Abstract: The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: September 22, 2015
    Assignee: Yagna Limited
    Inventor: Giuseppe Trigiante
  • Patent number: 9125409
    Abstract: A plant disease control agent comprising at least one member selected from the group consisting of saccharides and substances each having a bactericidal and/or fungicidal activity. The plant disease control agents are effective for the control of cucumber, grape and cabbage downy mildew, damping-off in seedlings caused by Pythium spp, cucumber and barley powdery mildew, wheat stem rust, potato and tomato late blight, and others.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: September 8, 2015
    Inventors: Toshiaki Ohara, Yutaka Ishida, Rika Kudou, Kazumasa Kakibuchi, Kazuya Akimitsu, Ken Izumori, Shigeyuki Tajima
  • Patent number: 9115217
    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 etherifying 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: April 10, 2009
    Date of Patent: August 25, 2015
    Assignee: AKZO NOBEL N.V.
    Inventor: Paulus Pieter De Wit
  • Patent number: 9115216
    Abstract: There is provided a method for producing alkali cellulose comprising efficiently removing cellulose particles which are introduced by a pulp and have accumulated in a circulating alkali metal hydroxide solution. More specifically, there is provided a method for producing alkali cellulose, comprising at least the steps of bringing a pulp into contact with an alkali metal hydroxide solution to obtain a contact product, draining the contact product by a drainer, reusing an alkali metal hydroxide solution recovered in the step of draining for contact with a pulp, and adjusting an amount of cellulose particles in the recovered alkali metal hydroxide solution to 0.5% by weight or less prior to reusing for contact with the pulp.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 25, 2015
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Mitsuo Narita
  • Patent number: 9109052
    Abstract: The invention relates to a new method of preparation of a hyaluronan derivative with an aldehydic group in the position (6) of the polysaccharide glucosamine part. The hyaluronic acid oxidation can be performed by means of TEMPO/NaCIO or TEMPO/TCC systems in a protic environment with or without the presence of anorganic salts. Thus prepared aldehyde can be used for binding amines, diamines, amino acids, peptides and other compounds containing an amino group, e.g. by means of the reductive amination with NaBH3CN in water or in a water-organic solvent system. When a diamine or compounds containing three or more amino groups are used, cross-linked hyaluronan derivatives can be prepared. Cross-linked derivatives can be also prepared by a reaction of the aldehyde with a hyaluronan substituted by an amino-alkyl group HA-alkyl-NH2.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 18, 2015
    Assignee: Contipro Pharma A.S.
    Inventors: Radovan Buffa, Sofiane Kettou, Lucie Pospisilova, Gloria Huerta-Angeles, Drahomira Chladkova, Vladimir Velebny
  • Patent number: 9107882
    Abstract: The present invention provides compositions suitable for topical administration to a mammalian subject including sodium hyaluronate and a pharmaceutically acceptable excipient. The present invention also provides methods for making and using the same.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: August 18, 2015
    Inventor: Robert Lewis
  • Patent number: 9102764
    Abstract: Disclosed are methods relating to monitoring the processing of polysaccharides and, in particular, monitoring the processing of guar in order to improve guar yield and/or lower impurity concentration in the wash effluent fluid.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: August 11, 2015
    Inventors: Marie-Pierre Labeau, Kraig Luczak, Vincent Monin, Serge Henrot, Aziz Boukhelifa, Simon Firkins
  • Patent number: 9096693
    Abstract: The invention describes a method for obtaining inulin which comprises: a) finely comminuting inulin-containing plant material, wherein particle sizes of the plant material are generated which are smaller than the size of the inulin-containing plant cells, b) suspending the finely comminuted plant material in a liquid, wherein inulin is released from the plant material and suspended in particulate form in the liquid, c) separating off plant particles from the liquid, wherein the inulin which is suspended in particulate form remains in the liquid, d) separating off the inulin which is suspended in particulate form from the liquid. The method is suitable in particular for obtaining inulin from artichoke roots.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: August 4, 2015
    Inventors: Günther Laufenberg, Friedrich Meuser
  • Patent number: 9040682
    Abstract: Flame retardant cellulose is prepared comprising cellulose fibers and an organophosphate compound bonded to the cellulose fibers. Accordingly, the bonded phosphate-functional group provides the cellulose fibers with pendant phosphate ester functionality. Numerous phosphate derivatives can be envisaged that will accomplish the intended task.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: Dylan J. Boday, Joseph Kuczynski
  • Patent number: 9034843
    Abstract: The present invention provides an ophthalmic composition which stabilizes the tear film during wearing contact lens, prevents eye dryness, imparts a favorable sensation in using, is highly convenient with no risk of misuse and shows a high efficiency in the course from manufacturing to sales. More specifically, the present invention provides a wetting solution—eye drops for contact lenses comprising (A) one or more member(s) selected from the group consisting of a cellulose-based polymer, a vinyl-based polymer, polyethylene glycol and dextran; and (B) one or more member(s) selected from the group consisting of chondroitin sulfate, alginic acid and salts thereof; and (C) a nonionic surfactant.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: May 19, 2015
    Assignee: Rohto Pharmaceutical Co., Ltd.
    Inventors: Yasuko Matsumura, Kazuhiro Fukushima
  • Patent number: 9023831
    Abstract: A method of inhibiting the adverse effects of complement pathway, activation products in a subject comprising administering to the subject an amount of Dextran Sulfate effective to inhibit formation of alternative complement pathway activation product.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: May 5, 2015
    Assignee: Novelmed Therapeutics, Inc.
    Inventor: Rekha Bansal