Patents by Inventor Katsutoshi Nishitani

Katsutoshi Nishitani 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: 6743863
    Abstract: A resin composition comprising the following components (A), (B) and (C), wherein the content of component (A) is from 10 to 90 wt %, component (B):component (C)=from 10:1 to 1:5 (weight ratio), the intrinsic viscosity [&eegr;] is in the range from 0.17 to 0.40 m3/kg, and the density is in the range from 935 to 968 kg/m3: Component (A): a homopolymer of ethylene or a copolymer of ethylene having an &agr;-olefin content of from 0 to 0.5 wt %, and an intrinsic viscosity [&eegr;] of from 0.035 to 0.17 m3/kg, Component (B): a homopolymer of ethylene or a copolymer of ethylene having an &agr;-olefin content of from 0 to 0.5 wt %, and an intrinsic viscosity [&eegr;] of from 0.2 to 1.0 m3/kg, and Component (C): a copolymer of ethylene having an &agr;-olefin content of from 0.7 to 15 wt %, and an intrinsic viscosity [&eegr;] of from 0.2 to 1.0 m3/kg.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: June 1, 2004
    Assignee: Maruzen Petrochemical Co., Ltd.
    Inventors: Tetsuya Iizuka, Shigeharu Yamamoto, Masao Kawahara, Toshifumi Takemori, Masashi Iida, Katsutoshi Nishitani
  • Publication number: 20030036606
    Abstract: A resin composition comprising the following components (A), (B) and (C), wherein the content of component (A) is from 10 to 90 wt %, component (B):component (C)=from 10:1 to 1:5 (weight ratio), the intrinsic viscosity [&eegr;] is in the range from 0.17 to 0.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 20, 2003
    Applicant: MARUZEN PETROCHEMICAL CO., LTD.
    Inventors: Tetsuya Iizuka, Shigeharu Yamamoto, Masao Kawahara, Toshifumi Takemori, Masashi Iida, Katsutoshi Nishitani
  • Patent number: 6194344
    Abstract: A process for the preparation of a high-softening-point pitch rich in mesopores having a softening point measured by temperature gradient method of 150° C. or higher, a weight loss by heating up to 300° C. of 5 wt. % or less and mesopores of 100 mm3/g or greater, in terms of minute pore volume calculated by the Dollimore-Heal method, and a process for making carbonaceous materials carrying metal thereon are disclosed. The high-softening-point pitch rich in mesopores can easily provide carbonaceous material carrying metal thereon by using no oxidizing agent such as nitric acid, and, therefore, the high-softening-point pitch rich in mesopores is especially suitable for the production of carbonaceous materials carrying metal thereon or highly crystalline graphitized carbonaceous materials in a short heating time.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: February 27, 2001
    Assignee: Maruzen Petrochemical Co., LTD
    Inventors: Masatoshi Tsuchitani, Ryoichi Nakajima, Kiyotaka Suzuki, Hitoshi Shigematsu, Katsutoshi Nishitani