Patents Assigned to KRICT
  • Reducible porous crystalline hybrid solid for the separation of mixtures of molecules having different degrees and/or a different number of unsaturations
    Patent number: 8926736
    Abstract: The present invention relates to reducible porous crystalline solids, constituted of a metal-organic framework (MOF), for the separation of mixtures of molecules having different unsaturation degrees and/or a different number of unsaturations with a selectivity that can be adjusted by controlling the reduction of the MOF. The MOF solids of the present invention, after reduction, have a strong affinity for molecules containing at least one unsaturation. They can be used in various separation processes, especially those relating to hydrocarbons.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: January 6, 2015
    Assignees: Centre National de la Recherche Scientifique -CNRS-, Universite de Caen-Basse Normandie, Universite de Versailles—Saint Quentin en Yvelines, Korea Research Institute of Chemical & Technology (KRICT)
    Inventors: Christian Serre, Alexandre Vimont, Philip Llewellyn, Jong-San Chang, Patricia Horcajada-Cortes, Gérard Ferey, Marco Daturi, Young-Kyu Hwang
  • Biological de-inking method
    Patent number: 5785809
    Abstract: A method of de-inking wastepaper by pulping the paper in the presence of an enzyme is disclosed. The enzyme dislodges the ink particles from the paper fibers. The preferred enzymes are the acid resistant carbohydrases. The de-inking medium is an aqueous solution of the enzyme, preferably maintained at a pH less than about 7 and at a temperature between about 20.degree. C. and about 60.degree. C. No conventional chemical de-inking agents are required. The dislodged ink particles may be removed by any conventional method, such as flotation or washing.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: July 28, 1998
    Assignee: KRICT
    Inventors: Steven Say-kyoun Ow, Tae Jin Eom