Patents by Inventor Mamoru Maruyama

Mamoru Maruyama 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: 8536260
    Abstract: A resin composition for a seamless air bag cover or a resin composition for a seamless instrument panel having an air bag cover which comprises (A) 50 to 90% by mass of polypropylene, (B) 0 to 20% by mass of a thermoplastic elastomer and (C) 10 to 30% by mass of talc having an average particle diameter of 15 to 25 ?m and a distribution of a particle diameter such that the content of particles having a diameter of 5 ?m or smaller is 10% by mass or smaller and the content of particles having a diameter exceeding 40 ?m is 10% by mass or smaller. The resin composition exhibits sufficient properties when an instrument panel is molded. A seamless instrument panel having an air bag cover can be obtained as an integrally molded product, which can be treated as a single article in recycling.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: September 17, 2013
    Assignees: Prime Polymer Co., Ltd., Daikyonishikawa Corporation
    Inventors: Kazuyuki Iida, Kazuaki Kihara, Mutsuo Fujii, Mamoru Maruyama
  • Patent number: 8233410
    Abstract: A telephone system that allows multiplexing and demultiplexing plural group calls through simple operations is provided. The telephone system includes a conference trunk creating unit that creates a conference trunk as required and has a multiplexing/demultiplexing special number table prestoring a multiplexing special number and demultiplexing special number corresponding to plural group calls. After plural group calls start, if the multiplexing special number is input, a control unit causes the conference trunk creating unit to create a large-conference trunk, switches and connects the voices of plural group calls corresponding to the multiplexing special number to the large-conference trunk and starts the multiplexed group call.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 31, 2012
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Toshiaki Mizoi, Mamoru Maruyama, Eiji Yokokawa
  • Publication number: 20110133509
    Abstract: A resin composition for a seamless air bag cover or a resin composition for a seamless instrument panel having an air bag cover which comprises (A) 50 to 90% by mass of polypropylene, (B) 0 to 20% by mass of a thermoplastic elastomer and (C) 10 to 30% by mass of talc having an average particle diameter of 15 to 25 ?m and a distribution of a particle diameter such that the content of particles having a diameter of 5 ?m or smaller is 10% by mass or smaller and the content of particles having a diameter exceeding 40 ?m is 10% by mass or smaller. The resin composition exhibits sufficient properties when an instrument panel is molded. A seamless instrument panel having an air bag cover can be obtained as an integrally molded product, which can be treated as a single article in recycling.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 9, 2011
    Applicants: DAIKYONISHIKAWA CORPORATION, PRIME POLYMER CO., LTD.
    Inventors: Kazuyuki IIDA, Kazuaki Kihara, Mutsuo Fujii, Mamoru Maruyama
  • Publication number: 20100214963
    Abstract: A telephone system that allows multiplexing and demultiplexing plural group calls through simple operations is provided. The telephone system includes a conference trunk creating unit that creates a conference trunk as required and has a multiplexing/demultiplexing special number table prestoring a multiplexing special number and demultiplexing special number corresponding to plural group calls. After plural group calls start, if the multiplexing special number is input, a control unit causes the conference trunk creating unit to create a large-conference trunk, switches and connects the voices of plural group calls corresponding to the multiplexing special number to the large-conference trunk and starts the multiplexed group call.
    Type: Application
    Filed: February 2, 2010
    Publication date: August 26, 2010
    Inventors: Toshiaki Mizoi, Mamoru Maruyama, Eiji Yokokawa
  • Publication number: 20080252049
    Abstract: A resin composition for a seamless air bag cover or a resin composition for a seamless instrument panel having an air bag cover which comprises (A) 50 to 90% by mass of polypropylene, (B) 0 to 20% by mass of a thermoplastic elastomer and (C) 10 to 30% by mass of talc having an average particle diameter of 15 to 25 ?m and a distribution of a particle diameter such that the content of particles having a diameter of 5 ?m or smaller is 10% by mass or smaller and the content of particles having a diameter exceeding 40 ?m is 10% by mass or smaller. The resin composition exhibits sufficient properties when an instrument panel is molded. A seamless instrument panel having an air bag cover can be obtained as an integrally molded product, which can be treated as a single article in recycling.
    Type: Application
    Filed: October 15, 2004
    Publication date: October 16, 2008
    Applicants: Idemitsu Kosan Co., Ltd., Nishikawa Kasei Co., Ltd.
    Inventors: Kazuyuki Iida, Kazuaki Kihara, Mutsuo Fujii, Mamoru Maruyama
  • Patent number: 7178825
    Abstract: An inventive vehicle air bag door includes a back-up member 13 provided on the bottom side of a panel main body 1. The back-up member 13 includes a back-up section 27, a plate section 20 and a hinge section 24 which are integrally formed. The hinge section includes: a first curved portion 34a whose midsection is curved so as to protrude toward a door section 17; and a second curved portion 34b whose midsection is curved so as to protrude away from the door section 17. When the door section 17 is opened, the first and second curved portions 34a and 34b are each extended and then the plate section 20 is pivoted around its junction with the second curved portion 34b.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 20, 2007
    Assignee: Nishikawa Kasei Co., Ltd.
    Inventors: Mutsuo Fujii, Tomonori Tanaka, Mamoru Maruyama
  • Publication number: 20040075251
    Abstract: An inventive vehicle air bag door includes a back-up member 13 provided on the bottom side of a panel main body 1. The back-up member 13 includes a back-up section 27, a plate section 20 and a hinge section 24 which are integrally formed. The hinge section includes: a first curved portion 34a whose midsection is curved so as to protrude toward a door section 17; and a second curved portion 34b whose midsection is curved so as to protrude away from the door section 17. When the door section 17 is opened, the first and second curved portions 34a and 34b are each extended and then the plate section 20 is pivoted around its junction with the second curved portion 34b.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 22, 2004
    Applicant: NISHIKAWA KASEI CO., LTD.
    Inventors: Mutsuo Fujii, Tomonori Tanaka, Mamoru Maruyama