Patents by Inventor Ayumi Yamazaki

Ayumi Yamazaki 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: 11274354
    Abstract: The present invention provides a steel material which is excellent in both of the strength (particularly, fatigue strength) and the manufacturability (particularly, bending straightening properties), and thus can be used as an automobile component such as a crankshaft by being formed into a product shape, being subjected to a high strength treatment such as a nitrocarburizing treatment, and then being subjected to the bending straightening.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 15, 2022
    Assignees: DAIDO STEEL CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Ryosuke Ohashi, Ayumi Yamazaki, Yushi Fujinaga, Kentaro Shimada, Ryuta Motani
  • Patent number: 10344345
    Abstract: The present invention relates to a part obtained from an age hardening type bainitic microalloyed steel, a process for producing the part, and the age hardening type bainitic microalloyed steel. In particular, the present invention relates to a part which has been controlled so as to have higher values of strength than conventional parts, a process for producing the part, and the age hardening type bainitic microalloyed steel.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: July 9, 2019
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Yuuki Tanaka, Takahiro Miyazaki, Ayumi Yamazaki, Yusuke Yoshimi, Hiroki Terada, Makoto Haritani
  • Publication number: 20170284452
    Abstract: The present invention provides a steel material which is excellent in both of the strength (particularly, fatigue strength) and the manufacturability (particularly, bending straightening properties), and thus can be used as an automobile component such as a crankshaft by being formed into a product shape, being subjected to a high strength treatment such as a nitrocarburizing treatment, and then being subjected to the bending straightening.
    Type: Application
    Filed: April 4, 2017
    Publication date: October 5, 2017
    Inventors: Ryosuke OHASHI, Ayumi YAMAZAKI
  • Publication number: 20170096720
    Abstract: The present invention relates to a part obtained from an age hardening type bainitic microalloyed steel, a process for producing the part, and the age hardening type bainitic microalloyed steel. In particular, the present invention relates to a part which has been controlled so as to have higher values of strength than conventional parts, a process for producing the part, and the age hardening type bainitic microalloyed steel.
    Type: Application
    Filed: September 29, 2016
    Publication date: April 6, 2017
    Applicant: DAIDO STEEL CO., LTD.
    Inventors: Yuuki TANAKA, Takahiro MIYAZAKI, Ayumi YAMAZAKI, Yusuke YOSHIMI, Hiroki TERADA, Makoto HARITANI
  • Patent number: 9593404
    Abstract: Provided is a method of manufacturing a nitrocarburized crankshaft which is obtained by subjecting a bainitic microalloyed steel to a forging and a machining, and further subjecting the bainitic microalloyed steel to at least a strain releasing heat treatment and a subsequent nitrocarburizing treatment, the bainitic microalloyed steel containing, as essentially added elements, in terms of mass %: 0.10% to 0.40% of C; 0.10% to 1.0% of Si; 1.0% to 2.0% of Mn; 0.05% to 0.40% of Mo; and 0.05% to 0.40% of V, and the bainitic microalloyed steel optionally further containing, as arbitrarily added elements, in terms of mass %: 0.01% to 0.1% of S; 0.005% to 0.2% of Ti; 0.001% to 0.03% of Al; 0.50% or less of Cr; 0.5% or less of Cu; and 0.5% or less of Ni, with the balance being Fe and unavoidable impurities.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: March 14, 2017
    Assignees: DAIDO STEEL CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Hiroki Masuda, Hideki Matsuda, Ayumi Yamazaki, Shinichiro Kato, Takahiro Miyazaki
  • Publication number: 20140326365
    Abstract: Provided is a method of manufacturing a nitrocarburized crankshaft which is obtained by subjecting a bainitic microalloyed steel to a forging and a machining, and further subjecting the bainitic microalloyed steel to at least a strain releasing heat treatment and a subsequent nitrocarburizing treatment, the bainitic microalloyed steel containing, as essentially added elements, in terms of mass %: 0.10% to 0.40% of C; 0.10% to 1.0% of Si; 1.0% to 2.0% of Mn; 0.05% to 0.40% of Mo; and 0.05% to 0.40% of V, and the bainitic microalloyed steel optionally further containing, as arbitrarily added elements, in terms of mass %: 0.01% to 0.1% of S; 0.005% to 0.2% of Ti; 0.001% to 0.03% of Al; 0.50% or less of Cr; 0.5% or less of Cu; and 0.5% or less of Ni, with the balance being Fe and unavoidable impurities.
    Type: Application
    Filed: April 28, 2014
    Publication date: November 6, 2014
    Applicants: DAIDO STEEL CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Hiroki MASUDA, Hideki MATSUDA, Ayumi YAMAZAKI, Shinichiro KATO, Takahiro MIYAZAKI
  • Patent number: 8247361
    Abstract: A fluorine-based lubricant composition comprising a base oil and a fluorine-containing compound represented by the general formula: CF3(CF2)n O(CF2O)p(C2F4O)q(C3F6O)rRfCONHAr (wherein, Ar is a 2-benzimidazole group, Rf is a fluorocarbon group of carbon number of from 1 or 2, n is 0, 1 or 2, p, q and r are an integer satisfying the condition p+q+r?100, where one or two of p, q and r may be 0, and the CF2O group, the CF2O4 group and the C3F6O group are the groups bound randomly in the main chain) as an additive containing in the base oil. The fluorine-based lubricant composition has an improved long term anti-rust property and thermal resistance property, and further the fluorine-based lubricant composition obtained by adding a thickening agent to the composition reduces abrasion of the sliding member such as electric contact having a noble metal surface including a gold or silver plating surface, a copper surface and a copper alloy surface.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: August 21, 2012
    Assignee: NOK Kluber Co., Ltd.
    Inventors: Akihiko Shimura, Ayumi Yamazaki, I, Wataru Sawaguchi, Masaki Tahara, Yoshihito Tani, Toshio Nitta
  • Publication number: 20100267597
    Abstract: A fluorine-based lubricant composition comprising a base oil and a fluorine-containing compound represented by the general formula: CF3(CF)n(CF2O)p(C2F4O)q(C3F6O)rRfCONHAr (wherein, Ar is a 2-benzimidazole group, Rf is a fluorocarbon group of carbon number of from 1 or 2, n is 0, 1 or 2, p, q and r are an integer satisfying the condition p+q+r?100, where one or two of p, q and r may be 0, and the CF2O group, the CF2O4 group and the C3F6O group are the groups bound randomly in the main chain) as an additive containing in the base oil. The fluorine-based lubricant composition has an improved long term anti-rust property and thermal resistance property, and further the fluorine-based lubricant composition obtained by adding a thickening agent to the composition reduces abrasion of the sliding member such as electric contact having a noble metal surface including a gold or silver plating surface, a copper surface and a copper alloy surface.
    Type: Application
    Filed: April 21, 2010
    Publication date: October 21, 2010
    Applicant: NOK KLUBER CO., LTD.
    Inventors: Akihiko SHIMURA, Ayumi YAMAZAKI, I, Wataru SAWAGUCHI, Masaki TAHARA, Yoshihito TANI, Toshio NITTA
  • Publication number: 20040174422
    Abstract: Provision of an inkjet recording cloth that can be inkjet-printed using a pigment ink at a high shade depth and having excellent water and abrasion resistance without deterioration in its characteristic handling touch, a method of preparing such an inkjet recording cloth and a method of inkjet-printing the cloth. Application of an acidic solution containing a certain hydrophobic low molecular weight compound, whose melting or softening point is from 40° C. to 150° C., to a cloth forms an ink-accepting layer on the surface of the cloth before inkjet-printing it with pigment ink. Preferably, said ink-accepting layer contains a cationic resin which shows an electrical conductivity of 0.5 mS/cm to 10.0 mS/cm when dissolved in water at a concentration of 1%, and has a number average molecular weight of 1,000 to 50,000.
    Type: Application
    Filed: March 22, 2004
    Publication date: September 9, 2004
    Applicant: Seiren Co., Ltd.
    Inventors: Syungaku Nakamura, Ayumi Yamazaki
  • Patent number: 6623532
    Abstract: The present invention provides a method of applying ink containing dyes to fabric composed of synthetic and cellulose fibers using an ink-jet system to print the fabric with high color shade depth and brilliancy and ink-jet printed goods obtained by the ink-jet printing method. The fabric composed of cellulose and synthetic fibers is treated with an acidic aqueous dispersion containing cellulose reactive compound, water-soluble polymer and non-water-soluble inactive organic compound with a melting point of 40° C.-150° C. and the fabric is dried before its ink-jet printing with reactive and disperse dyes.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: September 23, 2003
    Assignee: Seiren Co., Ltd.
    Inventors: Shungaku Nakamura, Ayumi Yamazaki
  • Publication number: 20020025379
    Abstract: The present invention provides a method of applying ink containing dyes to fabric composed of synthetic and cellulose fibers using an ink-jet system to print the fabric with high color shade depth and brilliancy and ink-jet printed goods obtained by the ink-jet printing method. The fabric composed of cellulose and synthetic fibers is treated with an acidic aqueous dispersion containing cellulose reactive compound, water-soluble polymer and non-water-soluble inactive organic compound with a melting point of 40° C.-150° C. and the fabric is dried before its ink-jet printing with reactive and disperse dyes.
    Type: Application
    Filed: September 5, 2001
    Publication date: February 28, 2002
    Applicant: SEIREN CO., LTD.
    Inventors: Shungaku Nakamura, Ayumi Yamazaki