Patents by Inventor Satoshi Bandai

Satoshi Bandai 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).

  • Method of producing a polymer
    Patent number: 6521726
    Abstract: A polymer of ethylenically unsaturated monomer, for example, 1,3-butadiene, having a desired molecular weight and distribution thereof is produced, with a high stability, by preparing a solution of hydrogen in an inert organic solvent for the monomer in which a vapor-liquid phase equilibrium of hydrogen is attained, and then by addition-polymerizing the monomer in the hydrogen-dissolved inert organic solvent in the presence of a catalyst preferably including a metallocene complex of transition metal compound, an inert compound of a non-coordination anionic compound with a cationic compound, an organic metal (aluminum) compound and, optionally, water.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: February 18, 2003
    Assignee: UBE Industries, Ltd.
    Inventors: Osamu Kimura, Takamasa Fujii, Satoshi Bandai, Takashi Kitamura, Toshifumi Fukunaga, Masato Murakami
  • Conjugated diene compound polymerization catalyst process for the preparation of conjugated diene polymer in the presence thereof and polybutadiene thus prepared
    Patent number: 6300450
    Abstract: The present invention provides a process for the production of a conjugated diene polymer having a controlled microstructure at a high polymerization activity in the presence of a metallocene type complex of compound of transition metal of the group V of the Periodic Table. A novel catalyst is provided comprising (A) a metallocene type complex of a transition metal of the group V of the Periodic Table, (B) an ionic compound of a non-coordinating anion and a cation, (C) an organic metal compound of the groups I to III and (D) water, wherein the molar ratio of (C)/(D) is from 0.66 to 5.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: October 9, 2001
    Assignee: UBE Industries, Ltd.
    Inventors: Nobuhiro Tsujimoto, Koji Maeda, Masato Murakami, Michinori Suzuki, Yasumasa Iwamoto, Sakae Yuasa, Satoshi Bandai, Yoshihira Hosoyama, Nobuharu Hisano
  • Process for continuously producing a polymeric laminate tape having a plurality of metal wires embedded therewithin
    Patent number: 4444709
    Abstract: A metal wire-containing polymeric laminate tape is continuously produced by superimposing a pair of primary cross-linked, electro-insulating thermoplastic polymer tapes side by side along the longitudinal axes thereof under tension, while a plurality of metal wires are interposed, under tension, in parallel to each other, between the primary tapes along the longitudinal axes thereof; by heating the resultant precursory laminate tape up to a temperature of from 10.degree. to 120.degree. C. above the melting point of the corresponding thermoplastic polymer, which is not cross-linked; by pressing the heated precursory laminate tape by using a pair of elastic pressing rolls, whereby the primary tapes are heat-bonded together to provide a body of laminate matrix within which the metal wires are embedded; and, optionally, by cooling the resultant laminate tape.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: April 24, 1984
    Assignee: UBE Industries, Ltd.
    Inventors: Masumi Hayashi, Kazuo Ogawa, Katsumi Kimura, Hiroshi Ishii, Satoshi Bandai