Patents by Inventor Yoshihiro Nakatsuji

Yoshihiro Nakatsuji 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).

  • Patent number: 6045732
    Abstract: A multi-layer molded article having a skin material layer made of a vinyl chloride resin, a propylene resin core, and an adhesive layer present between the skin material layer and the core, in which the adhesive layer includes (A) a layer having (a) a sublayer containing a polyester resin and an epoxy group-containing ethylene copolymer, which is bonded to the skin material of the vinyl chloride resin, and (b) a sublayer containing at least one copolymer selected from an ethylene copolymer and an epoxy group-containing copolymer, which is bonded to said propylene resin core, or (B) a layer obtained from an ethylene resin composition containing a polybasic carboxylic acid and an epoxy-group containing copolymer (c) which contains ethylene units, unsaturated carboxylic acid glycidyl ester units or unsaturated glycidyl ether units and an ethylenically unsaturated ester units other than the unsaturated carboxylic acid glycidyl ester units.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: April 4, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshihiro Nakatsuji, Hiroyuki Sugimoto, Kohsuke Ohtani, Toshio Igarashi, Satoru Funakoshi, Harunori Fujita
  • Patent number: 6008279
    Abstract: A vinyl chloride resin composition for powder molding containing 100 wt. parts of a granular vinyl chloride resin having an average polymerization degree of between 1000 and 1200, 75 to 81 wt. parts of a trimellitate plasticizer, and 2 to 20 wt. parts of a fine powder vinyl chloride resin having an average polymerization degree of between 600 and 1000, which has excellent powder-dropping and melting properties, and can be readily powder molded to give molded articles having good elongation at low temperature and also very low glass-hazing properties.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: December 28, 1999
    Assignees: Sumitomo Chemical Company Limited, Toyota Jidosha Kabushiki Kaisha
    Inventors: Hikaru Shimizu, Yoshihiro Nakatsuji, Junzo Ukai, Hideo Nishimura, Toshihiko Nakamura
  • Patent number: 5977259
    Abstract: A thermoplastic elastomer composition containing 100 wt. parts, in total, of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, and 0.1 to 150 wt. parts of at least one hydrogenated diene polymer having a hydrogenation degree of at least 70% selected from the group consisting of hydrogenated conjugated diene polymers and hydrogenated products of random copolymers comprising conjugated dienes and aromatic vinyl compounds in which the content of the aromatic vinyl compound units is 25 wt. % or less, in which the composition has a complex dynamic viscosity .eta.*(1) of 1.5.times.10.sup.5 poise or less, and a Newtonian viscosity index n of 0.67 or less. This composition provides molded articles which are not whitened on bending, and has good flexibility.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: November 2, 1999
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Hiroyuki Sugimoto, Yoshihiro Nakatsuji, Satoru Moritomi, Shinichiro Nagai, Yuji Gotoh
  • Patent number: 5840229
    Abstract: A method is described for producing a molded article by molding a thermoplastic elastomer powder having a sphere-reduced average diameter of 0.7 mm or less, a bulk specific gravity of at least 0.38 and a failing property of 20 second/100 ml or less, wherein the thermoplastic elastomer contains an elastomeric ethylene-.alpha.-olefin copolymer and a polyolefin resin and has a complex dynamic viscosity .eta.*(1) of 1.5.times.10.sup.5 poise or less when measured at 250.degree. C. at a frequency of 1 radian/sec., and a Newtonian viscosity index n of 0.67 or less, in which the Newtonian viscosity index n is calculated according to the following formula:n=(log .eta.*(1)-log .eta.*(100))/2wherein .eta.*(100) is a complex dynamic viscosity measured at 250.degree. C. at a frequency of 100 radian/sec.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: November 24, 1998
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Sugimoto, Yoshihiro Nakatsuji, Toshio Igarashi, Shigeo Tanaka
  • Patent number: 5677356
    Abstract: An expandable poly(vinyl chloride) resin composition for use in powder molding process containing a granular poly(vinyl chloride) resin, a fine-granular poly(vinyl chloride) resin, a plasticizer, a stabilizer, a foaming agent and an alkyl phosphate gives by a powder molding process an expansion-molded article having remarkably strengthened foamed cells and free from the occurrence of surface unevenness caused by polyurethane backing.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: October 14, 1997
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hikaru Shimizu, Toshio Igarashi, Akira Wakatsuki, Yoshihiro Nakatsuji, Yuu Shida
  • Patent number: 5663210
    Abstract: The present invention provides a polyethylenic foaming composition comprising (a) 100 parts by weight of an ethylenic copolymer having glycidyl groups consisting of 20 to 99.9% by weight of ethylene units, 0.1 to 30% by weight of a unit of a glycidyl ester of an unsaturated carboxylic acid or an unsaturated glycidyl ether, and 0 to 50% by weight of ethylenically unsaturated ester units other than a glycidyl ester, (b) 0.1 to 30 parts by weight of a carboxylic acid having 2 or more carboxyl groups and a molecular weight of 1500 or less, and (c) 0.1 to 20 parts by weight of a foaming agent of a thermal decomposition type. The present invention also provides a polyethylenic foam molded from said foaming composition.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: September 2, 1997
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Sugimoto, Toshio Igarashi, Yoshihiro Nakatsuji, Masayuki Tatsumi, Kenzou Chikanari, Satoru Funakoshi
  • Patent number: 5576080
    Abstract: The present invention provides a polyethylenic foaming composition comprising (a) 100 parts by weight of an ethylenic copolymer having glycidyl groups consisting of 20 to 99.9% by weight of ethylene units, 0.1 to 30% by weight of a unit of a glycidyl ester of an unsaturated carboxylic acid or an unsaturated glycidyl ether, and 0 to 50% by weight of ethylenically unsaturated ester units other than a glycidyl ester, (b) 0.1 to 30 parts by weight of a carboxylic acid having 2 or more carboxyl groups and a molecular weight of 1500 or less, and (c) 0.1 to 20 parts by weight of a foaming agent of a thermal decomposition type. The present invention also provides a polyethylenic foam molded from said foaming composition.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: November 19, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Sugimoto, Toshio Igarashi, Yoshihiro Nakatsuji, Masayuki Tatsumi, Kenzou Chikanari, Satoru Funakoshi
  • Patent number: 5432222
    Abstract: A powder molding composition containing dry-blended polyvinyl chloride resins, plasticizers and stabilizers, which is characterized in that there are blended therein 0.05 to 5 parts by weight of barium salt of a carboxylic acid having a melting point not lower than 250.degree. C. and 0.01 to 5 parts by weight of zinc salt of a fatty acid containing 10 or more carbon atoms, per 100 parts by weight said polyvinyl chloride resins. The composition of the invention is excellent in releasability and resistance to mold staining.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: July 11, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshio Igarashi, Akira Wakatsuki, Yoshihiro Nakatsuji, Yuu Shida, Hikaru Shimizu
  • Patent number: 5408307
    Abstract: In a cell analyze apparatus, a light beam is irradiated onto cells (or particles like the cells) flowing through a flow cell so as to measure cell light information for each cell with respect to a plurality of parameters (for example, the forward scattered light intensity, the right angle scattered light intensity and the intensity of fluorescence by different dye). Based on a minimal point of a histogram associated with the cell light information with respect to one or more parameters, the cell population is subdivided into fractions. When the minimal point is missing in the histogram, the parameters above are converted by use of a predetermined conversion expression (for example, a coordinate conversion is effected on the parameters) such that a minimal point is detected from the histogram of cell light information related to the new parameters obtained by the conversion, thereby subdividing an objective cell population.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: April 18, 1995
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Koji Yamamoto, Masahiro Hanafusa, Michio Nishimura, Yoshihiro Nakatsuji, Fumio Onuma, Shinichi Hirako, Kunio Kaede
  • Patent number: 5378745
    Abstract: A weather-resistant thermoplastic resin composition excellent in processing stability is provided which comprises 100 parts by weight of a mixture of 40-100 parts by weight of a vinyl chloride polymer and 0-60 parts by weight of a polymer containing no chlorine and having a glass transition temperature of 100.degree.-200.degree. C.; 4-25 parts by weight of an impact strength modifier containing no double bond; and 0.1-1.0 part by weight of a hindered amine light stabilizer. Molded articles made from this composition are especially excellent in weather resistance and are useful as pipes outdoors or building materials.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 3, 1995
    Inventors: Yoshihiro Nakatsuji, Masayuki Yoshihara, Hiroaki Maruyama, Toshio Igarashi
  • Patent number: 5376707
    Abstract: Disclosed herein is a polyvinyl chloride resin composition for powder molding which comprises granular polyvinyl chloride resin (as component A), particulate polyvinyl chloride resin (as component B), stabilizer, plasticizer, and saccharide (as component C). Disclosed also herein is a process for producing said resin composition by mixing granular polyvinyl chloride resin (as component A), particulate polyvinyl chloride resin (as component B), stabilizer, plasticizer, and saccharide (as component C). The resin composition is suitable for the production of covering materials for automotive interior.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: December 27, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshihiro Nakatsuji, Toshio Igarashi, Akira Wakatsuki, Yuu Shida, Hikaru Shimizu
  • Patent number: 5321090
    Abstract: Disclosed is a polyvinyl chloride resin powder composition containing (A) a granular polyvinyl chloride resin and (B) a fine granular vinyl chloride copolymer resin containing a copolymer composed of a vinyl chloride monomer and a carbonyloxy group-containing vinyl monomer, along with a stabilizer and a plasticizer. The composition is suitable for powder molding to produce covering materials of automotive interiors.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: June 14, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshihiro Nakatsuji, Toshio Igarashi, Akira Wakatsuki, Yuu Shida, Hikaru Shimizu
  • Patent number: 5158889
    Abstract: A biological cell sorter, comprising: a first laser for emitting a first laser beam directed to a point in a tube conducting biological cells in a single file, a first light detector for detecting a cell to be destroyed according to a light emitted from the cell as a result of impinging the first laser beam upon the cell and producing a trigger signal when a cell to be destroyed is detected; a second laser for emitting a second laser beam directed to another point in said guide path downstream of the mentioned point when the trigger signal is supplied thereto; a delay circuit for delaying activation of the second laser by a delay time corresponding to a travel time which the cell requires to travel between the two points; a time measuring circuit for measuring a time interval between two succeeding trigger signals; and a correction circuit such as a look-up table for adjusting the delay time according to said time interval between the two succeeding trigger signals.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: October 27, 1992
    Assignee: Omron Corporation
    Inventors: Shin-ichi Hirako, Yoshihiro Nakatsuji
  • Patent number: 4828345
    Abstract: A selective light transmissible film or sheet having excellent anti-fogging properties, produced by forming a thin film of a metal and/or a metal compound having transparency and infrared ray reflective characteristics, on the surface of one side of a cellulose derivative film or sheet of which the surface of the other side is saponified with an alkaline aqueous solution, or on the surface of one side of a cellulose derivative film or sheet of which both surfaces are saponified with an alkaline aqueous solution.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: May 9, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shuji Kitamura, Kiyohiko Nakae, Kozo Kotani, Yoshihiro Nakatsuji