Patents by Inventor Keishi Matsumoto
Keishi Matsumoto 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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Publication number: 20130086959Abstract: In a drawing method of a metallic tube which includes: filling a high-pressure container with a lubricating oil, the container having a mother tube inserted thereinto; pressurizing the oil with a pressure booster; and drawing the forcedly lubricated mother tube, the oil having a kinetic viscosity of 100 to 2000 mm2/s at 40° C. and at normal pressure and a viscosity pressure coefficient of 15 to 24 GPa?1 at 40° C. is used for preventing seizing and vibrations in drawing and for suppressing the deterioration of surface roughness due to oil pits in tube. Herein, the oil preferably contains one or more of extreme-pressure (EP) additives in a total amount of 10 mass % or more, being selected from a sulfur-based additive, a chlorine-based additive, an organic calcium metallic salt, a phosphorus-based additive, an organic zinc-based additive, and an organic molybdenum-based additive, each having a prescribed amount of relevant element.Type: ApplicationFiled: June 7, 2011Publication date: April 11, 2013Inventors: Masatoshi Toyoda, Keishi Matsumoto
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Patent number: 8411883Abstract: A loudspeaker apparatus includes a speaker array that has a plurality of speaker units which are arranged on a sound emitting surface of the speaker array, and emits sound beams on a plurality of channels, an angle sensing section that senses an angle change displaced from a previously set reference angle of the sound emitting surface, and an adjusting section that adjusts output angles of the sound beams in response to the angle change.Type: GrantFiled: June 19, 2009Date of Patent: April 2, 2013Assignee: Yamaha CorporationInventor: Keishi Matsumoto
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Patent number: 8327676Abstract: When a hollow billet is inserted into a container, and hot expanding piercing is downwardly performed by using a plug, hot piercing is performed by using a formed glass complex comprising a ring-shaped formed glass part and a ring-shaped projecting part. The ring-shaped formed glass part assumes a disc shape having a circular opening for allowing a plug to be inserted at the center thereof. The ring-shaped projecting part is attached to the opening of the ring-shaped formed glass part, and assumes a ring shape projecting perpendicularly to the ring-shaped formed glass part. Thereby, the piercing work can be done safely, and defects can be prevented from occurring on the inner surface of the billet.Type: GrantFiled: May 26, 2011Date of Patent: December 11, 2012Assignee: Sumitomo Metal Industries, Ltd.Inventors: Junichi Nishimori, Tomio Yamakawa, Keishi Matsumoto, Hiroaki Murakami
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Publication number: 20120263967Abstract: A blank tube for cold drawing is used for the production of a longer-length, small-diameter tube such as a heat-transfer tube for steam generation in nuclear power facilities, wherein the blank tube will not cause scoring and chattering vibration in a drawing process. The blank tube is used to produce a cold drawn tube through cold drawing of the blank tube. The average surface roughness Ra (ANSI B46.1) of the inner surface of blank tube before drawing satisfies the condition: 0.10 ?m?Ra?1.00 ?m in the case of a blank tube for cold drawing for use in an oil-lubricated drawing. In particular, the surface roughness Ra satisfies the condition: 0.10 ?m?Ra?0.50 ?m in the case of a blank tube for use in a high-pressure lubrication drawing and made of an austenitic alloy for use in a heat-transfer tube for a steam generator.Type: ApplicationFiled: June 20, 2012Publication date: October 18, 2012Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Masatoshi Toyoda, Keishi Matsumoto
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Publication number: 20120112456Abstract: A thin and highly transparent coating having excellent air tightness, adhesion to a substrate, lubricating properties, galling resistance, and corrosion resistance is formed on the surface of a metal substrate and particularly on the surface of a threaded joint which is used for connection of oil country tubular goods. A photocurable composition comprising (A) a photocurable (meth)acrylate resin, (B) a (meth)acrylate monomer selected from a monofunctional (meth)acrylate monomer and a difunctional (meth)acrylate monomer, (C) a trifunctional or higher multifunctional (meth)acrylate monomer, (D) a photopolymerization initiator, (E) a benzotriazole anticorrosive agent, (F) an anticorrosive pigment selected from a phosphate anticorrosive pigment and calcium ion-exchanged silica, and (G) a phosphate ester is used to form a photocured coating.Type: ApplicationFiled: November 14, 2011Publication date: May 10, 2012Applicants: SUMITOMO METAL INDUSTRIES, LTD., CHUGOKU MARINE PAINTS, LTD., VALLOUREC MANNESMANN OIL & GAS FRANCEInventors: Tomomitsu NAGAREO, Yoshinori Kameda, Keishi Matsumoto, Takayuki Kamimura, Masaru Takahashi, Kunio Goto, Ryuichi Imai
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Publication number: 20120025518Abstract: A solid lubricating coating formed on a contact surface of a threaded joint for pipes has a matrix of a lubricating oil-containing polymer. The lubricating oil-containing polymer has either a uniform composition or a gradient composition in which the concentration of lubricating oil decreases towards the contact surface and in which there is substantially no lubricating oil in the vicinity of the contact surface.Type: ApplicationFiled: September 26, 2011Publication date: February 2, 2012Applicants: VALLOUREC MANNESMANN OIL & GAS FRANCE, SUMITOMO METAL INDUSTRIES, LTD.Inventors: Takao Kuranishi, Kunio Goto, Keishi Matsumoto
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Publication number: 20110219837Abstract: When a hollow billet is inserted into a container, and hot expanding piercing is downwardly performed by using a plug, hot piercing is performed by using a formed glass complex comprising a ring-shaped formed glass part and a ring-shaped projecting part. The ring-shaped formed glass part assumes a disc shape having a circular opening for allowing a plug to be inserted at the center thereof. The ring-shaped projecting part is attached to the opening of the ring-shaped formed glass part, and assumes a ring shape projecting perpendicularly to the ring-shaped formed glass part. Thereby, the piercing work can be done safely, and defects can be prevented from occurring on the inner surface of the billet.Type: ApplicationFiled: May 26, 2011Publication date: September 15, 2011Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Junichi NISHIMORI, Tomio Yamakawa, Keishi Matsumoto, Hiroaki Murakami
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Publication number: 20100301600Abstract: In a threaded joint for pipes constituted by a pin and a box, each having a contact surface comprising a threaded portion and an unthreaded metal contact portion, the contact surface of the pin has a solid corrosion protective, preferably transparent coating based on a UV-curable resin and the contact surface of the box has a solid lubricating coating having plastic or viscoplastic rheological behavior which is preferably formed by the hot melt technique from a composition comprising a thermoplastic polymer, a wax, a metal soap, a corrosion inhibitor, a water-insoluble liquid resin, and a solid lubricant.Type: ApplicationFiled: June 4, 2010Publication date: December 2, 2010Inventors: Kunio Goto, Takayuki Kamimura, Masaru Takahashi, Keishi Matsumoto, Michihiko Iwamoto, Ryuichi Imai, Stephanie Rai
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Publication number: 20100295412Abstract: A stator coil heating apparatus and a stator coil heating method that are capable of effectively preventing a core from thermal deformation particularly caused due to a magnetic flux generated by a coil head, without the problem of heating temperature variation, and also shortening a time for the process of heating a stator coil, are provided. A stator coil heating apparatus A to heat a stator coil L wound around a circular core F, comprises: induction heating coil heads 1 and 11 that heat the circular coil L by generating an inductive effect acting from outside in the thickness direction of the core F, against circular winding coil bases La and Lb that are sticking out of end faces Fa and Fb of the core F in the thickness direction thereof; and shields 2 and 12 that block a magnetic flux generated by the coil heads 1 and 11, out of the end faces Fa and Fb of the core F in the thickness direction thereof.Type: ApplicationFiled: January 11, 2008Publication date: November 25, 2010Applicants: KABUSHIKI KAISHA OET, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keishi Matsumoto, Kenichiro Fukumaru, Ikuo Hayashi, Hideaki Miyake, Hideaki Kimura, Satoshi Koide
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Publication number: 20090316938Abstract: A loudspeaker apparatus includes a speaker array that has a plurality of speaker units which are arranged on a sound emitting surface of the speaker array, and emits sound beams on a plurality of channels, an angle sensing section that senses an angle change displaced from a previously set reference angle of the sound emitting surface, and an adjusting section that adjusts output angles of the sound beams in response to the angle change.Type: ApplicationFiled: June 19, 2009Publication date: December 24, 2009Applicant: YAMAHA CORPORATIONInventor: Keishi MATSUMOTO
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Publication number: 20090290064Abstract: AV content is input and output in an AV system. In the AV system, a plurality of AV devices process a signal of the content to reproduce the content. A source device broadcasts the content to each of the AV devices. In each of the AV devices, a reproduction unit receives the content broadcast by the source device and performs reproduction processing on the received content. A communication unit communicates reproduction processing time information with another AV device, the reproduction processing time information indicating a time required for the reproduction processing of the content. A delay unit delays a time to reproduce the content, such that the delay unit delays reproduction of the content in accordance with an AV device having a latest reproduction timing based on the reproduction processing time information.Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Applicant: Yamaha CorporationInventors: Keishi MATSUMOTO, Morihiro Murata
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Patent number: 7360798Abstract: A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided with improved anti-galling propertied by forming a lubricating coating on the contact surface of at least one of the pin and the box, the lubricating coating exhibiting a self-repairing function by liquid lubrication and having a decreased greasiness. The lubricating coating is (1) a coating which comprises a lower lubricant layer which is in liquid form in the temperature range of above 0° C. and below 40° C. and an upper lubricant layer which is in solid form at 40° C., or (2) a coating which is semi-solid or solid at 40° C. and is formed of a mixture comprising a lubricating oil which is in liquid form in the temperature range of above 0° C. and below 40° C. and a wax which is in solid form at 40° C., the mixture preferably having been heated so as to liquefy the wax and dissolve in each other the wax and lubricant oil.Type: GrantFiled: January 29, 2004Date of Patent: April 22, 2008Assignees: Sumitomo Metal Industries, Ltd., Vallourec Mannesmann Oil & Gas FranceInventors: Keishi Matsumoto, Kunio Goto, Toshiro Anraku, Shigeo Nagasaku, Hideo Yamamoto
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Patent number: 7272089Abstract: Prior to a main record, a trial write of data in an optical disc is performed in accordance with the characteristics between a record velocity and an optimum record power (Steps S2 to S4). The quality of a signal reproduced from the trial-written data is measured (Step S5). It is judged from the measured quality of the reproduced signal whether the predetermined velocity is a recordable velocity satisfying the characteristics between the record velocity and the optimum record power (Step 5). The main record is executed in accordance with the judgment result.Type: GrantFiled: March 28, 2002Date of Patent: September 18, 2007Assignee: Yamaha CorporationInventor: Keishi Matsumoto
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Patent number: 7200080Abstract: A method is designed for writing data originally recorded in a source disk medium with an original reproduction signal quality, into an object disk medium by means of an optical recording apparatus having a machine parameter settable to control a reproduction signal quality of data. The method is carried out by the steps of measuring the original reproduction signal quality of the data originally recorded in the source disk medium, setting a value of the machine parameter of the optical recording apparatus in accordance with the measured original reproduction signal quality, and writing the data into the object disk medium by means of the optical recording apparatus so as to secure the reproduction signal quality of the written data comparable to the original reproduction signal quality.Type: GrantFiled: January 14, 2003Date of Patent: April 3, 2007Assignee: Yamaha CorporationInventor: Keishi Matsumoto
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Publication number: 20060171278Abstract: A method is designed for writing data originally recorded in a source disk medium with an original reproduction signal quality, into an object disk medium by means of an optical recording apparatus having a machine parameter settable to control a reproduction signal quality of data. The method is carried out by the steps of measuring the original reproduction signal quality of the data originally recorded in the source disk medium, setting a value of the machine parameter of the optical recording apparatus in accordance with the measured original reproduction signal quality, and writing the data into the object disk medium by means of the optical recording apparatus so as to secure the reproduction signal quality of the written data comparable to the original reproduction signal quality.Type: ApplicationFiled: March 13, 2006Publication date: August 3, 2006Applicant: Yamaha CorporationInventor: Keishi Matsumoto
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Publication number: 20060153030Abstract: A method is designed for writing data originally recorded in a source disk medium with an original reproduction signal quality, into an object disk medium by means of an optical recording apparatus having a machine parameter settable to control a reproduction signal quality of data. The method is carried out by the steps of measuring the original reproduction signal quality of the data originally recorded in the source disk medium, setting a value of the machine parameter of the optical recording apparatus in accordance with the measured original reproduction signal quality, and writing the data into the object disk medium by means of the optical recording apparatus so as to secure the reproduction signal quality of the written data comparable to the original reproduction signal quality.Type: ApplicationFiled: March 13, 2006Publication date: July 13, 2006Applicant: Yamaha CorporationInventor: Keishi Matsumoto
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Publication number: 20060153029Abstract: A method is designed for writing data originally recorded in a source disk medium with an original reproduction signal quality, into an object disk medium by means of an optical recording apparatus having a machine parameter settable to control a reproduction signal quality of data. The method is carried out by the steps of measuring the original reproduction signal quality of the data originally recorded in the source disk medium, setting a value of the machine parameter of the optical recording apparatus in accordance with the measured original reproduction signal quality, and writing the data into the object disk medium by means of the optical recording apparatus so as to secure the reproduction signal quality of the written data comparable to the original reproduction signal quality.Type: ApplicationFiled: March 13, 2006Publication date: July 13, 2006Applicant: Yamaha CorporationInventor: Keishi Matsumoto
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Publication number: 20060153028Abstract: A method is designed for writing data originally recorded in a source disk medium with an original reproduction signal quality, into an object disk medium by means of an optical recording apparatus having a machine parameter settable to control a reproduction signal quality of data. The method is carried out by the steps of measuring the original reproduction signal quality of the data originally recorded in the source disk medium, setting a value of the machine parameter of the optical recording apparatus in accordance with the measured original reproduction signal quality, and writing the data into the object disk medium by means of the optical recording apparatus so as to secure the reproduction signal quality of the written data comparable to the original reproduction signal quality.Type: ApplicationFiled: March 13, 2006Publication date: July 13, 2006Applicant: Yamaha CorporationInventor: Keishi Matsumoto
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Patent number: 7046599Abstract: An optical disc recording method comprises the steps of: setting a recording parameter function representing a relationship between a recording velocity for recording data to an optical disc and a parameter for optimally controlling a recording power controlling waveform for controlling a recording power of a light beam irradiated to the optical disc for recording the data; obtaining an optimal value for the parameter by executing a test recording at one recording velocity or at a plurality of recording velocities to a test area of the optical disc before actual data recording to the optical disc; correcting the recording parameter function in accordance with the obtained optimal value for the parameter; deriving the parameter corresponding to a recording velocity from the corrected recording parameter function; and recording the data by irradiating a light beam of the recording power controlling waveform to which the obtained parameter is applied.Type: GrantFiled: March 19, 2003Date of Patent: May 16, 2006Assignee: Yamaha CorporationInventor: Keishi Matsumoto
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Patent number: 7046600Abstract: A method is designed for controlling a power of a laser beam irradiated onto a track of an optical disc for recording of data at a given linear velocity.Type: GrantFiled: July 30, 2002Date of Patent: May 16, 2006Assignee: Yamaha CorporationInventor: Keishi Matsumoto