Patents by Inventor Kenjiro Ikeda

Kenjiro Ikeda 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: 11859676
    Abstract: A method of manufacturing a constituent member of a constant-velocity joint includes: performing plastic working; and performing hardening of a material. The plastic working is performed with a material of the constituent member heated to a predetermined working temperature range. The hardening of the material is performed by utilizing heat applied for heating to the working temperature range in performing the plastic working as heat for the hardening of the material and cooling the material after performing the plastic working.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 2, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Motonori Nakao, Yohei Fukumoto, Koji Hamajima, Keiichi Kamata, Kenjiro Ikeda, Shintaro Yoshinaga
  • Publication number: 20200200224
    Abstract: A method of manufacturing a constituent member of a constant-velocity joint includes: performing plastic working; and performing hardening of a material. The plastic working is performed with a material of the constituent member heated to a predetermined working temperature range. The hardening of the material is performed by utilizing heat applied for heating to the working temperature range in performing the plastic working as heat for the hardening of the material and cooling the material after performing the plastic working.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 25, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Motonori NAKAO, Yohei Fukumoto, Koji Hamajima, Keiichi Kamata, Kenjiro Ikeda, Shintaro Yoshinaga
  • Patent number: 7918949
    Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: April 5, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
  • Patent number: 7516701
    Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: April 14, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
  • Patent number: 7377545
    Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: May 27, 2008
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
  • Publication number: 20070186797
    Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.
    Type: Application
    Filed: March 29, 2005
    Publication date: August 16, 2007
    Applicant: NIPPON KAYAKU KABUSHIKE KAISHA
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
  • Publication number: 20070187011
    Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.
    Type: Application
    Filed: March 29, 2007
    Publication date: August 16, 2007
    Inventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
  • Publication number: 20070163457
    Abstract: Provided is a squib for attaining a normal ignition of gas generants even when an adhesion state of the plug with enhancers is released by vibration or impact and a gas generator having the squib. A squib including a plug 13, two or more electrode pins 14 which pass through the plug 13 and respectively provided with a head 25, a bridge wire 16 connecting spaces between the respective heads 25 on at least two electrode pins 14 among the electrode pins 14, and ignition charge 10 which are ignited by the bridge wire 16 electrified via the electrode pins 14, wherein the plug 13 is a cured composition of thermosetting resins, the electrode pin 14 in which the bridge wire 16 is connected to the head 25 passes through the plug 13, with a predetermined distance A kept between the head 25 and the plug 13, and at least the head 25 and the bridge wire 16 are enclosed by the ignition charge 10, which is a solid, and fixed to the plug 13.
    Type: Application
    Filed: April 15, 2005
    Publication date: July 19, 2007
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Yasushi Matsumura, Junya Maruyama, Akitoshi Hironaka, Kazumasa Kurita, Kenjiro Ikeda
  • Publication number: 20060162607
    Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.
    Type: Application
    Filed: August 29, 2003
    Publication date: July 27, 2006
    Inventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
  • Patent number: 6958100
    Abstract: The present invention provides a gas generant composition comprising a nitrogen-containing organic compound, an oxidizing agent and an additive, wherein a calorific value per mol of gas generated by the combustion of the gas generant is not more than 125 KJ. Also, the present invention provides a gas generator using the said gas generant composition of the present invention. In the gas generant composition that burns at a suitable combustion speed for the gas generator, a calorific value per mol of gas generated by the combustion of the gas generant is suppressed to a specific value as noted above, whereby reduction in size and weight of the gas generator is achieved.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: October 25, 2005
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Patent number: 6918976
    Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: July 19, 2005
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Publication number: 20040232679
    Abstract: A gas generator (G) comprising a hollow body (3) packed with gas generant (2) for generating gas by burning, and a holder (5) disposed in an inside of the hollow body (3) and equipped with an igniter device (1). A stepped portion (12) is formed in the hollow body (3), and the holder (3) comprises a holder body (16) and a weldable member (6) partly exposed to an outer circumferential portion of the holder and is formed to fit against the stepped portion (12). The weldable member (6) and the hollow body (3) are welded to seal an interior of the hollow body (3).
    Type: Application
    Filed: February 9, 2004
    Publication date: November 25, 2004
    Inventors: Dairi Kubo, Junya Maruyama, Kenjiro Ikeda
  • Patent number: 6796580
    Abstract: A gas generator for actuating a vehicle occupant restraint device, including a first hollow body with a bottom and sides, gas generants filled densely in the first hollow body, an electric ignitor formed by housing igniting agents in a second hollow body with a bottom and sides, and closing the second hollow body with a plug, and a holder positioning the second hollow body in a center of the first hollow body and fixing the first hollow body while holding the plug of the electric ignitor. Particularly, a ratio of an empty space to a full volume of a space partitioned by an inner surface of the first hollow body, an outer surface of the second hollow body, and the holder is less than 20% by volume.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: September 28, 2004
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Dairi Kubo, Junya Amano, Koji Nakamura, Kenjiro Ikeda
  • Publication number: 20040159381
    Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.
    Type: Application
    Filed: January 2, 2004
    Publication date: August 19, 2004
    Inventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
  • Publication number: 20040159043
    Abstract: There is provided: an ignition agent composition comprising a base agent containing substantially no lead component, a combustion improver, and an additive, the composition comprising, as a base agent component, one or more materials selected from the group consisting of 5-nitroaminotetrazole and metal 5-nitroaminotetrazolate; and an igniter using the ignition agent composition.
    Type: Application
    Filed: December 4, 2003
    Publication date: August 19, 2004
    Inventors: Yasushi Matsumura, Kenjiro Ikeda, Shigeru Maeda
  • Publication number: 20040134577
    Abstract: An igniting agent composition substantially free of a lead compound, characterized in that it comprises a metal power and one or more selected from the group consisting of nitrate salt, basic nitrate salt, a metal oxide and a basic carbonate salt; and an igniter using the igniting agent composition. The igniting agent composition shows no delay in ignition time and no reduction in igniting capability, as compared to conventional lead-containing composition.
    Type: Application
    Filed: January 2, 2004
    Publication date: July 15, 2004
    Inventors: Yasushi Matsumura, Shigeru Maeda, Eishi Sato, Kenjiro Ikeda
  • Publication number: 20040069383
    Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.
    Type: Application
    Filed: October 7, 2003
    Publication date: April 15, 2004
    Applicant: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Publication number: 20040000362
    Abstract: The present invention provides a gas generant composition comprising a nitrogen-containing organic compound, an oxidizing agent and an additive, wherein a calorific value per mol of gas generated by the combustion of the gas generant is not more than 125KJ. Also, the present invention provides a gas generator using the said gas generant composition of the present invention.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 1, 2004
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Patent number: 6562087
    Abstract: An automatically ignitable enhancer agent composition comprising: (a) 5-aminotetrazole, (b) a metal powder, (c) at least one compound selected from the group consisting of potassium nitrate, sodium nitrate and strontium nitrate, and (d) molybdenum trioxide, and having a heating value of 4500 J/g or more. Further, the above composition which has an ability to generate gases in an amount of 0.5 mol to 2.0 mol per 100 g of the composition is also disclosed.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: May 13, 2003
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Ryoi Kodama, Kenjiro Ikeda, Yasushi Matsumura, Eishi Sato, Dairi Kubo
  • Patent number: D548133
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: August 7, 2007
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka