Patents by Inventor Yutaka Takado

Yutaka Takado 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).

  • Multi-layer plastic fuel tank
    Patent number: 5384172
    Abstract: A multi-layer plastic fuel tank is constituted by at least one high-density polyethylene layer, at least one polyamide layer, and at least one modified high-density polyethylene layer made of high-density polyethylene modified with an unsaturated carboxylic acid or its derivatives, which is interposed between each high-density polyethylene layer and each polyamide layer for bonding them, the polyamide layer being made of a polyamide copolymer comprising 90-60 weight % of polyamide 6 and 10-40 weight % of polyamide 66.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: January 24, 1995
    Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yutaka Takado, Toshikazu Nakasato, Tetsuro Nogata, Eiji Tezuka, Toshio Yokoi
  • Automobile bumper having smooth surface and manufactured by a blow molding process
    Patent number: 5123688
    Abstract: A high shock-absorbing automobile bumper with a smooth outer surface which may be manufactured by loading a preformed surface skin member into a blow mold, and then blowing a parison in the mold so that the blow parison is bonded to the surface skin member. The result is a hollow cushioning body firmly bonded to the surface skin member.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 23, 1992
    Assignee: Tonen Sekiyukagaku K.K.
    Inventors: Yutaka Takado, Masayuki Yamazaki, Takashi Mikami, Tetsuo Tomiyama
  • Method for producing an automobile bumper
    Patent number: 5114522
    Abstract: A method for producing a high shock-absorbing automobile bumper with a smooth outer surface. The method includes the steps of loading a preformed surface skin member into a blow mold, and then blowing a parison in the mold so that the blown parison is bonded to the surface skin member. The result is a hollow cushioning body firmly bonded to the surface skin member.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: May 19, 1992
    Inventors: Yutaka Takado, Masayuki Yamazaki, Takashi Mikami, Tetsuo Tomiyama
  • Automobile bumper
    Patent number: 4940270
    Abstract: An automoblile bumper comprising a blow-molded hollow body (5) of synthetic resin located between a surface skin (1) and a reinforcement (2), the hollow body (5) having recesses (7) formed by longitudinally extending ribs (6a) and (6a) on either the front or rear side, or on both sides, whereby the bumper uniformly absorbs impact energy when it is hit and thus reduces shocks transmitted to a car body.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: July 10, 1990
    Assignee: Tonen Sekiyukagaku K.K.
    Inventors: Masayuki Yamazaki, Yutaka Takado, Takashi Mikami