Patents by Inventor Mana Ito

Mana Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER COMPOSITION, AND METHOD FOR PRODUCING CONJUGATED DIENE POLYMER
    Publication number: 20110207874
    Abstract: A conjugated diene polymer is provided that includes a conjugated diene-based monomer unit and a monomer unit based on a compound represented by Formula (1) below, the monomer unit based on a compound represented by Formula (1) below being between a conjugated diene-based monomer unit-containing partial chain and a conjugated diene-based monomer unit-containing partial chain (said partial chain not comprising a monomer unit based on a compound represented by Formula (1) below), and the polymer having at least one terminus modified by a compound represented by Formula (2) below, wherein r is 0 or 1, R1 denotes a hydrocarbyl group or a group containing at least one atom selected from the atomic group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom, and R2 denotes a group containing at least one atom selected from the atomic group consisting of a nitrogen atom, an oxygen atom, and a sulfur atom, wherein X denotes an oxygen atom or a sulfur atom, R3 denotes a nitrogen atom- and/or oxygen
    Type: Application
    Filed: February 23, 2011
    Publication date: August 25, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mana Ito, Katsunari Inagaki
  • Use of alkali metal-silica gel (M-SG) materials in solvent and monomer drying and purification for their use in anionic polymerization
    Patent number: 7932329
    Abstract: Stage I Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: April 26, 2011
    Assignees: Signa Chemistry, Inc., Laboratoire de Chimie des Polymeres Organiques
    Inventors: Mana Ito, Stephane Carlotti, Alain Deffieux, Michael Lefenfeld
  • USE OF ALKALI METAL-SILICA GEL (M-SG) MATERIALS IN SOLVENT AND MONOMER DRYING AND PURIFICATION FOR THEIR USE IN ANIONIC POLYMERIZATION
    Publication number: 20090105430
    Abstract: Stage I Group 1 metal/porous metal oxide compositions or Stage II Group 1 metal/porous metal oxide compositions are shown to be useful to remove impurities and act as drying agents for various types of solvents and for olefinic monomers used in anionic polymerizations. One important advantage of these compositions is their ability to dry simultaneously solvent and monomers, without inducing a significant polymerization of the latter. Another important characteristic is the capacity of the compositions to be totally inactive toward conventional anionic polymerization which allows them to be left in situ during the polymerization itself.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 23, 2009
    Applicants: SIGNA CHEMISTRY, INC., Laboratoire de Chimie des Polymeres Organiques, ENSCPB-CNRS
    Inventors: Mana ITO, Stephane CARLOTTI, Alain DEFFIEUX, Michael LEFENFELD