Patents by Inventor Masaru Nagahama

Masaru Nagahama 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).

  • Publication number: 20180044504
    Abstract: An object of the present invention is to provide a plasticizer having excellent press coloration resistance and cold resistance, and a vinyl chloride resin composition containing the plasticizer. The plasticizer is a trimellitic acid triester plasticizer containing a triester compound of a saturated aliphatic alcohol and trimellitic acid, wherein the saturated aliphatic alcohol contains a linear alcohol having 8 to 10 carbon atoms and a branched alcohol having 8 to 10 carbon atoms, and the ratio (mass ratio) of the linear alcohol and the branched alcohol is 78/22 to 50/50.
    Type: Application
    Filed: March 8, 2016
    Publication date: February 15, 2018
    Applicant: ADEKA CORPORATION
    Inventors: Ryusaku FUJIMOTO, Masaru NAGAHAMA, Yuki TANAKA
  • Publication number: 20180030243
    Abstract: Disclosed is a vinyl chloride-based resin composition having excellent weather resistance, coloration resistance, and thermal stability as well as excellent transparency, and a molded article using this vinyl chloride-based resin composition. Specifically, the vinyl chloride-based resin composition contains a vinyl chloride-based resin in an amount of 100 parts by mass, an organic acid zinc salt as a component (A) in an amount of 0.01 to 10.0 parts by mass, a ?-diketone compound as a component (B) in an amount of 0.01 to 10.0 parts by mass, and one or more triazine-based compounds as a component (C) represented by Formula (1) in an amount of 0.01 to 20.0 parts by mass. (In Formula (1), R1 to R3 represent a linear or branched alkyl group having 1 to 12 carbon atoms or the like, and R4 to R6 represent an alkyl group having 1 to 8 carbon atoms or the like.
    Type: Application
    Filed: March 7, 2016
    Publication date: February 1, 2018
    Inventors: Ryusuke MITAMURA, Yuto ISHIZUKA, Masaru NAGAHAMA, Kazumasa TANAKA
  • Publication number: 20090312478
    Abstract: A vinyl chloride resin composition that has better electrical insulating properties than existing vinyl chloride resin compositions and a wire coating material that includes the vinyl chloride resin composition are provided. A vinyl chloride resin composition contains 0.1 to 3 parts by weight of synthetic aluminum silicate per 100 parts by weight of a vinyl chloride resin, the synthetic aluminum silicate having an apparent specific gravity of 7 ml/g or more. Synthetic aluminum silicate having a specific surface area of 400 m2/g or more can be preferably used. The wire coating material contains the vinyl chloride resin composition.
    Type: Application
    Filed: November 26, 2007
    Publication date: December 17, 2009
    Applicant: ADEKA CORPORATION
    Inventors: Satsuki Hasegawa, Masashi Harada, Masaru Nagahama
  • Patent number: 7465761
    Abstract: The invention provides a flame retardant composition comprising 1-99 weight parts of a salt of piperazine and an inorganic compound selected from among piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, or a mixture of two or more of these piperazine salts (ingredient (A)), 99-1 weight parts of a salt of melamine and an inorganic compound selected from among melamine phosphate, melamine pyrophosphate and melamine polyphosphate, or a mixture of two or more of these melamine salts (ingredient (B)) (wherein, the sum of ingredient (A) and ingredient (B) is 100 weight parts), 0-50 weight parts of an arbitrary ingredient (ingredient (C)), and 0.01-20 weight parts of a silicone oil having a viscosity at 25° C. of 5000 mm2/s (ingredient (D)) which is added thereto. This flame retardant not only has superior flame retarding properties, but also has enhanced powder properties and anti-hygroscopic properties, and when it is added to a resin, there is little change of electrical resistance.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: December 16, 2008
    Assignee: Adeka Corporation
    Inventors: Hisashi Murase, Masaru Nagahama, Kenichi Yoshikawa, Yuki Tanaka, Takayoshi Kaneda, Akihiro Yamaki
  • Patent number: 7449577
    Abstract: The present invention provides piperazine pyrophosphate represented by chemical formula (I) which has a sodium content of 10 ppm or lower and a process of producing the same. The piperazine pyrophosphate has high purity and provides a flame retardant composition exhibiting excellent flame retardancy. The process includes dehydration condensation of piperazine diphosphate and is able to produce the piperazine pyrophosphate at low cost.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: November 11, 2008
    Assignee: Adeka Corporation
    Inventors: Ryoji Kimura, Hisashi Murase, Masaru Nagahama, Tetsuo Kamimoto, Sinji Nakano
  • Publication number: 20070176154
    Abstract: The invention provides a flame retardant composition comprising 1-99 weight parts of a salt of piperazine and an inorganic compound selected from among piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, or a mixture of two or more of these piperazine salts (ingredient (A)), 99-1 weight parts of a salt of melamine and an inorganic compound selected from among melamine phosphate, melamine pyrophosphate and melamine polyphosphate, or a mixture of two or more of these melamine salts (ingredient (B) ) (wherein, the sum of ingredient (A) and ingredient (B) is 100 weight parts), 0-50 weight parts of an arbitrary ingredient (ingredient (C)), and 0.01-20 weight parts of a silicone oil having a viscosity at 25° C. of 5000 mm2/s (ingredient (D)) which is added thereto. This flame retardant not only has superior flame retarding properties, but also has enhanced powder properties and anti-hygroscopic properties, and when it is added to a resin, there is little change of electrical resistance.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 2, 2007
    Applicant: AKEKA CORPORATION
    Inventors: Hisashi Murase, Masaru Nagahama, Kenichi Yoshikawa, Yuki Tanaka, Takayoshi Kaneda, Akihiro Yamaki
  • Publication number: 20070025555
    Abstract: A sound-signal generating unit generates, when a positional relationship between a local information processing apparatus and a user is acquired, a sound signal that makes the user perceive a virtual sound source at a predetermined position in a three-dimensional space based on the acquired positional relationship.
    Type: Application
    Filed: October 19, 2005
    Publication date: February 1, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Nobuyuki Gonai, Satoshi Mikami, Sumio Koseki, Masayoshi Sueya, Masaru Nagahama, Junya Mikami
  • Publication number: 20060167256
    Abstract: The present invention provides piperazine pyrophosphate represented by chemical formula (I) which has a sodium content of 10 ppm or lower and a process of producing the same. The piperazine pyrophosphate has high purity and provides a flame retardant composition exhibiting excellent flame retardancy. The process includes dehydration condensation of piperazine diphosphate and is able to produce the piperazine pyrophosphate at low cost.
    Type: Application
    Filed: August 27, 2004
    Publication date: July 27, 2006
    Inventors: Ryoji Kimura, Masaru Nagahama, Tetsuo Kamimoto, Shinji Nakano