Patents by Inventor Hiroyuki Takabayashi
Hiroyuki Takabayashi 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).
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Patent number: 9506125Abstract: The present invention provides a maraging steel containing: 0.10?C?0.30 mass %, 6.0?Ni?9.4 mass %, 11.0?Co?20.0 mass %, 1.0?Mo?6.0 mass %, 2.0?Cr?6.0 mass %, 0.5?Al?1.3 mass %, and Ti?0.1 mass %, with the balance being Fe and unavoidable impurities, and satisfying 1.00?A?1.08, in which A is 0.95+0.35×[C]?0.0092×[Ni]+0.011×[Co]?0.02×[Cr]?0.001×[Mo], where [C] indicates a content (mass %) of C, [Ni] indicates a content (mass %) of Ni, [Co] indicates a content (mass %) of Co, [Cr] indicates a content (mass %) of Cr, and [Mo] indicates a content (mass %) of Mo, respectively. The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.Type: GrantFiled: June 5, 2013Date of Patent: November 29, 2016Assignees: DAIDO STEEL CO., LTD., IHI CORPORATIONInventors: Shigeki Ueta, Hiroyuki Takabayashi, Ei Kimura, Yuta Tanaka, Satoshi Takahashi, Isao Nakanowatari, Kota Sasaki, Koshiro Yamane, Satoru Yusa
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Publication number: 20160340752Abstract: The present invention relates to a maraging steel containing, in terms of mass %, 0.20?C?0.35, 9.0?Co?20.0, 1.0?(Mo+W/2)?2.0, 1.0?Cr?4.0, and a certain amount of Ni, with the balance being Fe and inevitable impurities, in which in a case where the contents of V and Nb satisfy V+Nb?0.020 mass %, the amount of Ni is 6.0?Ni?9.4, and in which in a case where the contents of V and Nb satisfy 0.020 mass %<V+Nb?0.60 mass %, the amount of Ni is 6.0?Ni?16.0.Type: ApplicationFiled: May 13, 2016Publication date: November 24, 2016Inventors: Kenji Sugiyama, Keita Hinoshita, Hiroyuki Takabayashi, Shigeki Ueta
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Publication number: 20160340753Abstract: The present invention relates to a maraging steel containing, in terms of mass %, 0.10?C?0.35, 9.0?Co?20.0, 1.0?(Mo+W/2)?2.0, 1.0?Cr?4.0, a certain amount of Ni, a certain amount of Al, and V+Nb?0.60, with the balance being Fe and inevitable impurities, in which in a case of V+Nb?0.020, the amount of Ni is 6.0?Ni?9.4 and the amount of Al is 1.4?Al?2.0, and in a case of 0.020<V+Nb?0.60, the amount of Ni is 6.0?Ni?20.0 and the amount of Al is 0.50?Al?2.0.Type: ApplicationFiled: May 13, 2016Publication date: November 24, 2016Inventors: Keita HINOSHITA, Kenji SUGIYAMA, Hiroyuki TAKABAYASHI, Shigeki UETA
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Patent number: 9416436Abstract: The present invention aim at providing a steel for steam turbine blades which is excellent in terms of strength and toughness. The steel of the present invention has a composition which contains, in terms of % by mass, 0.02-0.10% of C, up to 0.25% of Si, 0.001-0.10% of Mn, up to 0.010% of P, up to 0.010% of S, 8.5-10.0% of Ni, 10.5-13.0% of Cr, 2.0-2.5% of Mo, 0.001-0.010% of N, 1.15-1.50% of Al, less than 0.10% of Cu, up to 0.20% of Ti, and the remainder being incidental impurities and Fe, and which satisfies 6.0?Ni/Al?8.0, 9.0?Nieq?11.0 and 17.0?Creq?19.0, in which Nieq=[Ni]+0.11[Mn]?0.0086([Mn]2)+0.44[Cu]+18.4[N]+24.5[C] Creq=[Cr]+1.21[Mo]+0.48[Si]+2.2[Ti]+2.48[A1].Type: GrantFiled: April 24, 2013Date of Patent: August 16, 2016Assignee: DAIDO STEEL CO., LTD.Inventors: Hiroyuki Takabayashi, Shigeki Ueta
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Publication number: 20150275673Abstract: The present invention relates to a Ti—Al-based heat-resistant member including a Ti—Al-based alloy which includes: 28.0 mass % to 35.0 mass % of Al; 1.0 mass % to 15.0 mass % of at least one selected from the group consisting of Nb, Mo, W and Ta; 0.1 mass % to 5.0 mass % of at least one selected from the group consisting of Cr, Mn and V; and 0.1 mass % to 1.0 mass % of Si, with the balance being Ti and unavoidable impurities, in which a whole or a part of a surface of the Ti—Al-based heat-resistant member includes a hardened layer as a surface layer, the hardened layer having a higher hardness than an inside of the Ti—Al-based heat-resistant member, and the Ti—Al-based heat-resistant member has a hardness ratio (a hardness of the surface layer/a hardness of the inside) of 1.4 to 2.5.Type: ApplicationFiled: March 23, 2015Publication date: October 1, 2015Applicant: DAIDO STEEL CO., LTD.Inventors: Yoshihiko KOYANAGI, Hiroyuki TAKABAYASHI, Yoshinori SUMI
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Publication number: 20150247221Abstract: The present invention relates to a turbine wheel of an automotive turbocharger, including a Ni-based alloy having a composition which contains, in terms of mass %: C: 0.08 to 0.20%; Mn: 0.25% or less; Si: 0.01 to 0.50%; Cr: 12.0 to 14.0%; Mo: 3.80 to 5.20%; Nb+Ta: 1.80 to 2.80%; Ti: 0.50 to 1.00%; Al: 5.50 to 6.50%; B: 0.005 to 0.015%; Zr: 0.05 to 0.15%; and Fe: 0.01 to 2.5%, with the remainder being Ni and unavoidable impurities, in which the turbine wheel includes a wing part and a shaft part, and a size of ?? phase in each site of from a tip of the wing part to the shaft part is structure-controlled so as to fall within a range of from 0.4 to 0.8 ?m.Type: ApplicationFiled: February 25, 2015Publication date: September 3, 2015Applicant: DAIDO STEEL CO., LTD.Inventors: Yoshinori SUMI, Hiroyuki TAKABAYASHI
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Publication number: 20130327446Abstract: The present invention provides a maraging steel containing: 0.10?C?0.30 mass %, 6.0?Ni?9.4 mass %, 11.0?Co?20.0 mass %, 1.0?Mo?6.0 mass %, 2.0?Cr?6.0 mass %, 0.5?Al?1.3 mass %, and Ti?0.1 mass %, with the balance being Fe and unavoidable impurities, and satisfying 1.00?A?1.08, in which A is 0.95+0.35×[C]?0.0092×[Ni]+0.011×[Co]?0.02×[Cr]?0.001×[Mo], where [C] indicates a content (mass %) of C, [Ni] indicates a content (mass %) of Ni, [Co] indicates a content (mass %) of Co, [Cr] indicates a content (mass%) of Cr, and [Mo] indicates a content (mass%) of Mo, respectively, The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.Type: ApplicationFiled: June 5, 2013Publication date: December 12, 2013Applicants: IHI CORPORATION, DAIDO STEEL CO., LTD.Inventors: Shigeki UETA, Hiroyuki TAKABAYASHI, Ei KIMURA, Yuta TANAKA, Satoshi TAKAHASHI, Isao NAKANOWATARI, Kota SASAKI, Koshiro YAMANE, Satoru YUSA
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Publication number: 20130287620Abstract: The present invention aim at providing a steel for steam turbine blades which is excellent in terms of strength and toughness. The steel of the present invention has a composition which contains, in terms of % by mass, 0.02-0.10% of C, up to 0.25% of Si, 0.001-0.10% of Mn, up to 0.010% of P, up to 0.010% of S, 8.5-10.0% of Ni, 10.5-13.0% of Cr, 2.0-2.5% of Mo, 0.001-0.010% of N, 1.15-1.50% of Al, less than 0.10% of Cu, up to 0.20% of Ti, and the remainder being incidental impurities and Fe, and which satisfies 6.0?Ni/Al?8.0, 9.0?Nieq?11.0 and 17.0?Creq?19.0, in which Nieq=[Ni]+0.11[Mn]?0.0086([Mn]2)+0.44[Cu]+18.4[N]+24.5[C] Creq=[Cr]+1.21[Mo]+0.48[Si]+2.2[Ti]+2.48[A1].Type: ApplicationFiled: April 24, 2013Publication date: October 31, 2013Applicant: DAIDO STEEL CO., LTD.Inventors: Hiroyuki TAKABAYASHI, Shigeki UETA
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Patent number: 7974830Abstract: A tape management method capable of easily using a file on a virtual tape from a plurality of programs in a system virtually emulating a magnetic tape apparatus by a disk apparatus. When a use request is generated from other program to a volume of a virtual tape used by one program, a host computer generates and uses a volume of a temporal virtual tape and can thus permit the use of the temporal tape volume from a plurality of programs without drastically changing the specification of an existing tape interface. The volume of the virtual tape temporarily generated is generated in a virtual tape management table and a virtual tape file uses a file of the same type.Type: GrantFiled: January 29, 2008Date of Patent: July 5, 2011Assignee: Hitachi, Ltd.Inventors: Michiaki Sekine, Takeaki Murakoso, Hiroyuki Takabayashi, Norichika Hatabe
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Patent number: 7914732Abstract: The present invention provides: a ferritic stainless steel cast iron including: Fe as a main component; C: 0.20 to 0.40 mass %; Si: 1.00 to 3.00 mass %; Mn: 0.30 to 3.00 mass %; Cr: 12.0 to 30.0 mass %; and one of Nb and V, or both of Nb and V in total: 1.0 to 5.0 mass %, the ferritic stainless steel cast iron satisfying the following formula (1): 1400?1562.3?{133WC+14WSi+5WMn+10(WNb+WV)}?1480??(1) wherein, WC (mass %), WSi (mass %), WMn (mass %), WCr (mass %), WNb (mass %), WV (mass %) and WCu (mass %) are contents of C, Si, Mn, Cr, Nb, V and Cu, respectively; a process for producing a cast part from the ferritic cast steel; and the cast part.Type: GrantFiled: February 23, 2007Date of Patent: March 29, 2011Assignee: Daido Tokushuko Kabushiki KaishaInventors: Hiroyuki Takabayashi, Shigeki Ueta, Tetsuya Shimizu, Toshiharu Noda
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Publication number: 20090132228Abstract: A tape management method capable of easily using a file on a virtual tape from a plurality of programs in a system virtually emulating a magnetic tape apparatus by a disk apparatus. When a use request is generated from other program to a volume of a virtual tape used by one program, a host computer generates and uses a volume of a temporal virtual tape and can thus permit the use of the temporal tape volume from a plurality of programs without drastically changing the specification of an existing tape interface. The volume of the virtual tape temporarily generated is generated in a virtual tape management table and a virtual tape file uses a file of the same type.Type: ApplicationFiled: January 29, 2008Publication date: May 21, 2009Applicant: HITACHI, LTD.Inventors: Michiaki SEKINE, Takeaki MURAKOSO, Hiroyuki TAKABAYASHI, Norichika HATABE
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Publication number: 20080126667Abstract: A technology in which a magnetic disk apparatus executes data relocation involves the problems how to cope with new setup of file management and hardware failure and performance drop at the time in a data relocation. The invention provide a technology capable of executing data relocation without moving physical data position by a magnetic disk control apparatus when a disconnection operation of a logical volume is made, while keeping setup of an existing file management system. Therefore, the magnetic disk control apparatus is provided with means for keeping a file position information list inside a logical volume, executing optimal data reorganization in such a fashion as to eliminate fragmentation of the list and updating a physical/logical address mapping table. Reorganization of the logical file position is made without the data movement.Type: ApplicationFiled: November 29, 2006Publication date: May 29, 2008Inventors: Norichika Hatabe, Hiroyuki Takabayashi, Takeaki Murakoso
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Publication number: 20070215252Abstract: The present invention provides: a ferritic stainless steel cast iron including: Fe as a main component; C: 0.20 to 0.40 mass %; Si: 1.00 to 3.00 mass %; Mn: 0.30 to 3.00 mass %; Cr: 12.0 to 30.0 mass %; and one of Nb and V, or both of Nb and V in total: 1.0 to 5.0 mass %, the ferritic stainless steel cast iron satisfying the following formula (1): 1400?1562.3?{133WC+14WSi+5WMn+10(WNb+WV)}?1480??(1) wherein, WC (mass %), WSi (mass %), WMn (mass %), WCr (mass %), WNb (mass %), WV (mass %) and WCu (mass %) are contents of C, Si, Mn, Cr, Nb, V and Cu, respectively; a process for producing a cast part from the ferritic cast steel; and the cast part.Type: ApplicationFiled: February 23, 2007Publication date: September 20, 2007Applicant: DAIDO TOKUSHUKO KABUSHIKI KAISHAInventors: Hiroyuki Takabayashi, Shigeki Ueta, Tetsuya Shimizu, Toshiharu Noda
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Patent number: 6705600Abstract: A liquid sealing type body mount has a stopper provided in liquid chambers to function properly with high rigidity and also to improve the durability. An inner cylinder is fixed to either a body or a frame and an outer cylinder is fixed to the other. A rubber elastomer is provided between the inner and outer cylinders and defines two liquid chambers, opposed to each other with respect to the inner cylinder and an orifice passage for communicating both the liquid chambers with each other. Inside both the liquid chambers there is provided the stopper with a metal portion which protrudes in the radial direction from the inner cylinder and is embedded in a rubber portion formed integrally with the rubber elastomer. There is a slight gap between the stopper and the chamber wall surface or the stopper slightly comes into contact with the chamber wall surface.Type: GrantFiled: March 11, 2002Date of Patent: March 16, 2004Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Naoki Yamaguchi, Yoshitaka Ishimoto, Hiroyuki Takabayashi
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Patent number: 6592109Abstract: A liquid sealing type body mount has a vibrating coefficient at 15 Hz frequency of about 4N·s/mm, and a moving spring constant at about 100 Hz reduced to about 1000N/mm to provide vibration isolation. The liquid sealing type body mount comprises an inner cylinder fixed to one of a body and a frame on the support side, an outer cylinder fixed to the other of them, a rubber elastomer provided between the inner and outer cylinders, two liquid chambers, and an orifice passage communicating the liquid chambers with each other, in which the load of the body is input in the axial direction. End walls of both the liquid chambers are formed of a rubber film extending aslant and outward in the axial direction from the inner cylinder side toward the outer cylinder.Type: GrantFiled: July 3, 2001Date of Patent: July 15, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Naoki Yamaguchi, Yoshitaka Ishimoto, Hiroyuki Takabayashi
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Publication number: 20020145239Abstract: An object of the present invention is to provide a liquid sealing type body mount the structure of which allows a stopper provided in liquid chambers to function properly with high rigidity and also to improve the durability.Type: ApplicationFiled: March 11, 2002Publication date: October 10, 2002Inventors: Naoki Yamaguchi, Yoshitaka Ishimoto, Hiroyuki Takabayashi
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Publication number: 20020038938Abstract: An object of the present invention is to provide a liquid sealing type body mount in which when the vibrating coefficient at 15 Hz frequency is set to about 4 N·s/mm, a moving spring constant of about 100 Hz can be reduced to about 1000 N/mm, so that the sufficient vibration-proof characteristic can be obtained. This liquid sealing type body mount comprises an inner cylinder fixed to one of a body and a frame on the support side, an outer cylinder fixed to the other of them, a rubber elastomer that is provided between the inner and outer cylinders, two liquid chambers, which are formed at portions opposed to each other with the inner cylinder between, and an orifice passage for communicating both the liquid chambers with each other, in which the load of the body is input in the axial direction.Type: ApplicationFiled: August 30, 2001Publication date: April 4, 2002Inventors: Naoki Yamaguchi, Yoshitaka Ishimoto, Hiroyuki Takabayashi