Patents by Inventor Eiji Kishi

Eiji Kishi 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).

  • Heat-resistant magnesium alloy for casting heat-resistant magnesium alloy cast product, and process for producing heat-resistant magnesium alloy cast product
    Patent number: 8123877
    Abstract: A heat-resistant magnesium alloy is for casting, and includes Ca in an amount of from 1 to 15% by mass, Al in a summed amount of from 4 to 25% by mass with the amount of Ca, and the balance being Mg and inevitable impurities when the entirety is taken as 100% by mass. The heat-resistant magnesium alloy is not only inexpensive, but also effects an advantage that cracks are inhibited from occurring when being cast. For example, a process for producing heat-resistant magnesium alloy cast product includes the step of pressure pouring an alloy molten metal, which has a target composition around Mg—3% Ca—3% Al—from 0.2 to 0.3% Mn, into a cavity of metallic die, which is preheated to a die temperature of from 130 to 140° C. in advance. The process makes it possible to produce die-cast products, which are free from cast cracks.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: February 28, 2012
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Motoharu Tanizawa, Kyoichi Kinoshita, Eiji Kishi, Katsufumi Tanaka, Yuki Okamoto, Takayuki Kato
  • Heat-resistant magnesium alloy for casting heat-resistant magnesium alloy cast product, and process for producing heat-resistant magnesium alloy cast product
    Publication number: 20080187454
    Abstract: A heat-resistant magnesium alloy is for casting, and includes Ca in an amount of from 1 to 15% by mass, Al in a summed amount of from 4 to 25% by mass with the amount of Ca, and the balance being Mg and inevitable impurities when the entirety is taken as 100% by mass. The heat-resistant magnesium alloy is not only inexpensive, but also effects an advantage that cracks are inhibited from occurring when being cast. For example, a process for producing heat-resistant magnesium alloy cast product includes the step of pressure pouring an alloy molten metal, which has a target composition around Mg-3% Ca-3% Al-from 0.2 to 0.3% Mn, into a cavity of metallic die, which is preheated to a die temperature of from 130 to 140° C. in advance. The process makes it possible to produce die-cast products, which are free from cast cracks.
    Type: Application
    Filed: October 18, 2007
    Publication date: August 7, 2008
    Inventors: Motoharu Tanizawa, Kyoichi Kinoshita, Eiji Kishi, Katsufumi Tanaka, Yuki Okamoto, Takayuki Kato
  • Heat-resistant magnesium alloy for casting and heat-resistant magnesium alloy cast product
    Publication number: 20040151613
    Abstract: A heat-resistant magnesium alloy is for casting, and includes Ca in an amount of from 1 to 15% by mass, Al in a summed amount of from 4 to 25% by mass with the amount of Ca, and the balance being Mg and inevitable impurities when the entirety is taken as 100% by mass. The heat-resistant magnesium alloy is not only inexpensive, but also effects an advantage that cracks are inhibited from occurring when being cast.
    Type: Application
    Filed: January 23, 2004
    Publication date: August 5, 2004
    Inventors: Motoharu Tanizawa, Kyoichi Kinoshita, Eiji Kishi, Katsufumi Tanaka, Yuki Okamoto, Takayuki Kato
  • Heat resistant magnesium alloy
    Publication number: 20040091384
    Abstract: A heat resistant magnesium alloy contains 1 to 6 percentage by mass of aluminum, 0.5 to 3 by mass ratio of calcium to aluminum, and the remainder made from magnesium and unavoidable impurities.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 13, 2004
    Inventors: Katsufumi Tanaka, Eiji Kishi, Motoharu Tanizawa, Yuki Okamoto, Manabu Miyoshi, Takayuki Kato