Patents by Inventor Yoshiteru Chiba
Yoshiteru Chiba 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: 7735734Abstract: By concealing the existence of an area using a function (which is referred to as IC privacy function) capable of concealing the data area corresponding to each service (behaving as if the data area does not exist), an existing function provided in the contactless IC card, an access to the data necessary for a service can be inhibited, so as to control to inhibit (lock) use of the contactless IC card on a service-by-service basis.Type: GrantFiled: October 30, 2006Date of Patent: June 15, 2010Assignee: Fujitsu LimitedInventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka, Takuya Otsuki, Masashi Sanjo, Toshinao Osaka, Hiroko Saito, Yoshiteru Chiba, Kenetsu Furuki
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Publication number: 20070272752Abstract: By concealing the existence of an area using a function (which is referred to as IC privacy function) capable of concealing the data area corresponding to each service (behaving as if the data area does not exist), an existing function provided in the contactless IC card, an access to the data necessary for a service can be inhibited, so as to control to inhibit (lock) use of the contactless IC card on a service-by-service basis.Type: ApplicationFiled: October 30, 2006Publication date: November 29, 2007Applicant: FUJITSU LIMITEDInventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka, Takuya Otsuki, Masashi Sanjo, Toshinao Osaka, Hiroko Saito, Yoshiteru Chiba, Kenetsu Furuki
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Patent number: 6959916Abstract: A valve which is cobalt-free excellent in wear resistance and seizure resistance manufactured by forming valve seats for a valve disc and a valve body with a nickel base alloy in which silicide particles or boride particles of small particle size are finely dispersed, and the valve seat is bonded to the valve disc or the valve body by way of an insert material comprising a nickel base alloy of a lower melting point by transient liquid phase diffusion bonding.Type: GrantFiled: November 6, 2002Date of Patent: November 1, 2005Assignee: Hitachi, Ltd.Inventors: Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Yoshihisa Kiyotoki, Kikuo Takeshima, Akira Sakamoto, Yoshiteru Chiba
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Patent number: 6896978Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 ?m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 ?m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: GrantFiled: February 27, 2002Date of Patent: May 24, 2005Assignee: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Patent number: 6889957Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 ?m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 ?m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: GrantFiled: October 16, 2002Date of Patent: May 10, 2005Assignee: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Patent number: 6886809Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 ?m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 ?m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: GrantFiled: September 25, 2003Date of Patent: May 3, 2005Assignee: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Publication number: 20040056231Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 &mgr;m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 &mgr;m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: ApplicationFiled: September 25, 2003Publication date: March 25, 2004Applicant: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Patent number: 6672330Abstract: A valve is characterized by excellent corrosion and wear resistance and maintainability due to use of a bonding corrosion and wear proof alloy containing non-continuously distributed eutectic carbide on the sliding portions of various types of apparatuses and valves by diffusion bonding. This serves to improve the maintainability of a thermal and nuclear power plant and to provide a nuclear power plant using recirculating water, which ensures excellent working safety, in particular. The corrosion and wear proof alloy is characterized in that network-formed eutectic carbide in the alloy containing the cast structure base metal and eutectic carbide is formed into(multiple) granules or lumps having a particle size of 30 microns or less so that said eutectic carbide is non-continuously distributed.Type: GrantFiled: February 5, 2001Date of Patent: January 6, 2004Assignee: Hitachi, Ltd.Inventors: Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Yoshihisa Kiyotoki, Takahiko Kato, Yoshiteru Chiba
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Publication number: 20030180175Abstract: To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen.Type: ApplicationFiled: March 13, 2003Publication date: September 25, 2003Applicants: Hitachi, Ltd., Hitachi Kyowa Engineering Co., Ltd.Inventors: Yoshihisa Kiyotoki, Yoshiteru Chiba, Shin Kumagai, Yasuhiro Ogawa, Akira Sakamoto, Hiroyuki Shinohara
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Publication number: 20030147769Abstract: To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen.Type: ApplicationFiled: October 15, 2002Publication date: August 7, 2003Applicant: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Yoshiteru Chiba, Shin Kumagai, Yasuhiro Ogawa, Akira Sakamoto, Hiroyuki Shinohara
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Publication number: 20030132415Abstract: A valve which is cobalt-free excellent in wear resistance and seizure resistance manufactured by forming valve seats for a valve disc and a valve body with a nickel base alloy in which silicide particles or boride particles of small particle size are finely dispersed, and the valve seat is bonded to the valve disc or the valve body by way of an insert material comprising a nickel base alloy of a lower melting point by transient liquid phase diffusion bonding.Type: ApplicationFiled: November 6, 2002Publication date: July 17, 2003Applicant: Hitachi, Ltd.Inventors: Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Yoshihisa Kiyotoki, Kikuo Takeshima, Akira Sakamoto, Yoshiteru Chiba
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Publication number: 20030129075Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 &mgr;m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 &mgr;m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: ApplicationFiled: October 16, 2002Publication date: July 10, 2003Applicant: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Publication number: 20030026379Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 &mgr;m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 &mgr;m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: ApplicationFiled: February 27, 2002Publication date: February 6, 2003Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Publication number: 20020161916Abstract: A multichannel network through which data of telephone line, animation data, etc. are transmitted and received can continuously transfer data by connecting data between a source and a destination through a substantially exclusive connection although there arises a relaying, branching, or replicating process depending on the data type such as documents, voice, animation, etc. Furthermore, by assigning physically respective channels to different data types, interference by other channels can be successfully avoided. That is, a server is connected to a plurality of clients which can be personal computers PC 1 through PC 4 through cables b through e. The personal computers PC 1 through PC 4 are connected to push-button telephones T1 through T4 through cables j through m.Type: ApplicationFiled: April 30, 2001Publication date: October 31, 2002Inventor: Yoshiteru Chiba
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Publication number: 20020064678Abstract: To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen.Type: ApplicationFiled: August 28, 2001Publication date: May 30, 2002Inventors: Yoshihisa Kiyotoki, Yoshiteru Chiba, Shin Kumagai, Yasuhiro Ogawa, Akira Sakamoto, Hiroyuki Shinohara
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Publication number: 20010017906Abstract: The object of the present invention is to provide a valve characterized by excellent corrosion and wear resistance and maintainability by bonding corrosion and wear proof alloy containing non-continuously distributed eutectic carbide to the sliding portions of various types of apparatuses and valves by diffusion bonding. Another object of the present invention is to improve the maintainability of a thermal and nuclear power plant and to provide a nuclear power plant comprising the recirculating water which ensures excellent working safety, in particular.Type: ApplicationFiled: February 5, 2001Publication date: August 30, 2001Inventors: Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Yoshihisa Kiyotoki, Takahiko Kato, Yoshiteru Chiba
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Patent number: 5865297Abstract: In a vibratory parts-feeder, a bowl is combined with a base block by plural sets of single leaf spring. A controller is connected to an electro-magnetic coil of a drive part for the parts feeder. The bowl is torsionally vibrated nearly at a resonant frequency and at a desired amplitude with automatic or manual adjustment of the controller.Type: GrantFiled: August 31, 1995Date of Patent: February 2, 1999Assignee: Shinko Electric Co., Ltd.Inventors: Yoshiteru Chiba, Teruo Osa, deceased, Toshiro Sekine, Hideyuki Takachu
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Patent number: 5063200Abstract: The present invention provides a shaped superconductor article such as wire, tape or disk, comprising an oxide superconductor phase and a metal phase in a monolayered or multilayered form, the metal phase comprising a copper, iron, nickel or titanium base alloy containing 1 to 10% by weight of aluminum and having an oxygen-impermeable oxide film formed thereon, preventing the diffusion of oxygen from the oxide superconductor phase to the metal phase.Type: GrantFiled: August 9, 1988Date of Patent: November 5, 1991Assignee: Hitachi, Ltd.Inventors: Michiya Okada, Tadaoki Morimoto, Akira Okayama, Yoshimi Yanai, Hiroshi Satoh, Toshimi Matsumoto, Yoshiteru Chiba, Kimihiko Akahori, Takahiko Kato, Toshiya Doi, Kazuhide Tanaka