Patents by Inventor Masaru Kanaoka
Masaru Kanaoka 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: 9192418Abstract: A method of integrating bone and implant material includes drilling a hole in either one of the bone and the implant material through to a junction of the bone and the implant material by applying a laser beam to either one of the bone and the implant material and integrating the bone and the implant material by applying a laser beam to the junction through the hole drilled at the drilling.Type: GrantFiled: August 21, 2007Date of Patent: November 24, 2015Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Mitsubishi Electric CorporationInventors: Masaru Kanaoka, Taira Ogita, Tooru Murai, Shigeru Tadano, Masahiro Todoh
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Patent number: 9107977Abstract: In a hydroxyapatite to be joined to another hydroxyapatite or a bone by laser machining (machining of the bone and the hydroxyapatite includes irradiation of laser light on the bone and irradiation of laser light on the hydroxyapatite), to prevent occurrence of a fracture in a junction and in a peripheral portion of the junction during laser machining, the present invention provides an optimum weight ratio of a cordierite or quartz glass component mixed in the hydroxyapatite. As a mixing ratio of the cordierite or quartz glass component, the cordierite or quartz glass component is mixed at least at a weight ratio equal to or higher than 25.7%.Type: GrantFiled: October 27, 2011Date of Patent: August 18, 2015Assignees: Mitsubishi Electric Corporation, National University Corporation Hokkaido UniversityInventors: Masaru Kanaoka, Taira Ogita, Shigeru Tadano
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Publication number: 20140277455Abstract: An apparatus for integrating bone and implant material and a method for fabricating an implant material are provided. The apparatus includes a laser applying unit that applies the laser beam to a junction of the bone and the implant material to drill a hole in the bone and melt the implant material, a processing-condition setting unit that sets a processing condition for at least one of the bone and the implant material, and a control unit that controls an application of the laser beam based on the processing condition. The method includes burning a bone by applying a heat source to the bone, foamed-layer forming including melting sintered implant material by applying the heat source to the implant material in a gas atmosphere produced by burning the bone, and forming a foamed layer on melted implant material in which foamed air bubbles are confined and coagulated.Type: ApplicationFiled: June 2, 2014Publication date: September 18, 2014Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Mitsubishi Electric CorporationInventors: Masaru KANAOKA, Taira OGITA, Tooru MURAI, Shigeru TADANO, Masahiro TODOH
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Publication number: 20130213553Abstract: In a hydroxyapatite to be joined to another hydroxyapatite or a bone by laser machining (machining of the bone and the hydroxyapatite includes irradiation of laser light on the bone and irradiation of laser light on the hydroxyapatite), to prevent occurrence of a fracture in a junction and in a peripheral portion of the junction during laser machining, the present invention provides an optimum weight ratio of a cordierite or quartz glass component mixed in the hydroxyapatite. As a mixing ratio of the cordierite or quartz glass component, the cordierite or quartz glass component is mixed at least at a weight ratio equal to or higher than 25.7%.Type: ApplicationFiled: October 27, 2011Publication date: August 22, 2013Applicants: National University Corporation Hokkaido University, MITSUBISHI ELECTRIC CORPORATIONInventors: Masaru Kanaoka, Taira Ogita, Shigeru Tadano
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Patent number: 8344284Abstract: A laser machining nozzle herein obtained includes a main assist-gas nozzle (2) for emitting a laser beam (8) and a main assist-gas, and an auxiliary assist-gas nozzle (5) annularly surrounding the main assist-gas nozzle for emitting an auxiliary assist-gas, whereby a gold plating (12) is provided on an interior surface of the main assist-gas nozzle to reflect the laser beam, so that a temperature rise of the laser machining nozzle can be prevented, and even when the laser beam (8) is reflected on the interior surface of the laser machining nozzle, it is possible to reduce peeling of the gold plating (12) applied onto the interior surface of the laser machining nozzle.Type: GrantFiled: July 23, 2008Date of Patent: January 1, 2013Assignee: Mitsubishi Electric CorporationInventors: Takanori Miyazaki, Masaru Kanaoka, Taira Ogita
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Publication number: 20100187209Abstract: A laser machining nozzle herein obtained includes a main assist-gas nozzle (2) for emitting a laser beam (8) and a main assist-gas, and an auxiliary assist-gas nozzle (5) annularly surrounding the main assist-gas nozzle for emitting an auxiliary assist-gas, whereby a gold plating (12) is provided on an interior surface of the main assist-gas nozzle to reflect the laser beam, so that a temperature rise of the laser machining nozzle can be prevented, and even when the laser beam (8) is reflected on the interior surface of the laser machining nozzle, it is possible to reduce peeling of the gold plating (12) applied onto the interior surface of the laser machining nozzle.Type: ApplicationFiled: July 23, 2008Publication date: July 29, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takanori Miyazaki, Masaru Kanaoka, Taira Ogita
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Publication number: 20100049179Abstract: A method of integrating bone and implant material includes drilling a hole in either one of the bone and the implant material through to a junction of the bone and the implant material by applying a laser beam to either one of the bone and the implant material and integrating the bone and the implant material by applying a laser beam to the junction through the hole drilled at the drilling.Type: ApplicationFiled: August 21, 2007Publication date: February 25, 2010Inventors: Masaru Kanaoka, Taira Ogita, Tooru Murai, Shigeru Tadano, Masahiro Todoh
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Patent number: 6288363Abstract: A machining head of a laser machining apparatus comprises a main assist gas nozzle at the center portion of the machining head for supplying a main assist gas and one or more annular sub assist gas nozzles surrounding the main assist gas nozzle, whose jet outlet of the innermost diameter is larger or equal to the jet outlet of main assist gas. The jet outlet of the main assist gas nozzle is positioned at upstream of said jet outlets of the respective sub assist gas nozzle. According to the above construction, the jet gas pressure and the jet gas velocity vary continuously at the assist gas jet outlet and the jet gas pressure and flow velocity fluctuation of the main assist gas are increased.Type: GrantFiled: June 26, 2000Date of Patent: September 11, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kunihiko Kaga, Satoru Kotoh, Shuji Ogawa, Masaru Kanaoka
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Patent number: 6118097Abstract: A machining head of a laser machining apparatus comprises a main assist gas nozzle at the center portion of the machining head for supplying a main assist gas and one or more annular sub assist gas nozzles surrounding the main assist gas nozzle, whose jet outlet of the innermost diameter is larger or equal to the jet outlet of main assist gas. The jet outlet of the main assist gas nozzle is positioned at upstream of said jet outlets of the respective sub assist gas nozzle. According to the above construction, the jet gas pressure and the jet gas velocity vary continuously at the assist gas jet outlet and the jet gas pressure and flow velocity fluctuation of the main assist gas are increased.Type: GrantFiled: October 22, 1993Date of Patent: September 12, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kunihiko Kaga, Satoru Kotoh, Shuji Ogawa, Masaru Kanaoka
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Patent number: 6040549Abstract: A laser beam machining is carried out by irradiating beforehand the laser beam along a final locus for a main machining, under such a condition as to obtain an energy density for removing a galvanized layer as a surface substance of a work. Thereafter, the laser beam is irradiated to a bare area on which the zinc has been removed, while changing only the energy density according to a cutting condition to cut the work.Type: GrantFiled: October 14, 1997Date of Patent: March 21, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masaru Kanaoka
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Patent number: 5939010Abstract: In the present invention, a laser beam with a prespecified oscillation frequency is divided into the arbitrary number of pulses to be irradiated to all holes in an area, and this step is repeated until the irradiation reaches a desired number of pulses, whereby an interactive time can be decided according to the number of divided pulses and a cooling period of time can be obtained, and also the number of pulses per one division is set to be a plurality of pulses, which allows an etching rate to be increased, so that the number of pulses required for machining can be reduced as compared to a case where a laser is irradiated to all the holes pulse by pulse.Type: GrantFiled: December 23, 1997Date of Patent: August 17, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takayuki Yuyama, Masaru Kanaoka
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Patent number: 5889253Abstract: Laser beam machining is carried out by irradiating beforehand the laser beam along a final locus for a main machining, under such a condition as to obtain an energy density for making uniform a surface roughness of a work. Thereafter, the laser beam is irradiated to an area on which the surface has been smoothed, while changing only the energy density according to a cutting condition to cut the work.Type: GrantFiled: March 13, 1997Date of Patent: March 30, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masaru Kanaoka
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Patent number: 5831239Abstract: A laser welding method which provides improved welding quality, allowing excellent products to be produced. The mixture of inactive gas or nitrogen gas and 5% to 35% of oxygen gas in terms of volume ratio and that of inactive gas or nitrogen gas and not less than 25% of dried air in terms of volume ratio are employed as an assist gas in the lap and butt weldings and filler wire-inserted welding of metal materials filmed with low melting point substance.Type: GrantFiled: June 24, 1996Date of Patent: November 3, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Setuo Matubara, Masaru Kanaoka
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Patent number: 5770833Abstract: A laser processing method locates a processing head at a piercing start position so that the focal point of the laser beam is positioned above the workpiece surface and offset from a point right above the intended piercing point on the workpiece. While conducting irradiation with the laser beam and jetting of an assist gas, the processing head located at the piercing start position is moved simultaneously both in a direction parallel to the workpiece surface and a direction perpendicular to the workpiece surface such that the focal point approaches the piercing point.Type: GrantFiled: January 21, 1997Date of Patent: June 23, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masaru Kanaoka, Tooru Murai, Akira Urakawa
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Patent number: 5767479Abstract: A Laser beam machining is carried out by irradiating beforehand the laser beam along a final locus for a main machining, under such a condition as to obtain an energy density for forming a groove angled to a surface of a work. Thereafter, the laser beam is irradiated to the groove, while changing only the energy density according to a cutting condition to cut the work.Type: GrantFiled: March 13, 1997Date of Patent: June 16, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masaru Kanaoka
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Patent number: 5688418Abstract: A laser cutting method is provided for laser cutting a workpiece made of a metallic material to form hole having a desired shape, in which many of a second set of laser cutting conditions are different from a set of first laser cutting conditions, in order to avoid a chipping phenomenon when switching laser cutting conditions. The first laser cutting conditions are used for cutting the workpiece up to a predetermined distance short of the end point of the cut. The second set of cutting conditions are used for cutting the workpiece between an end point of the cut along the circumference of the hole, and a point a predetermined distance short of the end point of the cut. The focus position in the second laser cutting conditions is the same as the focus position in the first laser cutting conditions. Moreover, other of the second cutting conditions are the same as corresponding ones of the first set of cutting conditions.Type: GrantFiled: February 23, 1995Date of Patent: November 18, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shigehiro Yoshiyasu, Masaru Kanaoka
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Patent number: 5618452Abstract: A laser welding method which provides improved welding quality, allowing excellent products to be produced. The mixture of inactive gas or nitrogen gas and 5% to 35% of oxygen gas in terms of volume ratio and that of inactive gas or nitrogen gas and not less than 25% of dried air in terms of volume ratio are employed as an assist gas in the lap and butt weldings and filler wire-inserted welding of metal materials filmed with low melting point substance.Type: GrantFiled: July 13, 1993Date of Patent: April 8, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Setuo Matubara, Masaru Kanaoka
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Patent number: 5609781Abstract: A machining head of a laser machining apparatus for adjusting flow speed distribution includes a sub assist gas supply inlet; an annular partition for partitioning the inside of the sub assist gas nozzle toward axis direction; an annular flat board which contacts rotatably to the side surface of the down stream of the annular partition wall, and interrupts a part of gas supply inlet, and a part of which is notched; two partition plates which are mounted on both end portions of the annular flat board, partition the inside of the sub assist gas nozzle down stream of the annular partition wall, and rotate with the annular flat board; a driving device for driving the annular flat board; and a control apparatus for operating the driving device.Type: GrantFiled: October 20, 1994Date of Patent: March 11, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kunihiko Kaga, Satoru Kotoh, Shuji Ogawa, Masaru Kanaoka, Toru Murai
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Patent number: 5585018Abstract: A laser cutting method with which cutting faults at the time of cutting condition changing are substantially eliminated. Impingement of the laser beam on the workpiece is stopped when the laser beam reaches a position along the path where the first cutting conditions are to be changed to second cutting conditions. The laser beam is then retracted along the path a predetermined distance from the position where the first cutting conditions are to be switched to the second cutting conditions. After a delay time, the laser beam is again moved along the predetermined path to cut the workpiece under the second cutting conditions. The retraction distance is set in accordance with the thickness of the workpiece. Also, an assist gas may be sprayed on the workpiece in the vicinity of the cutting path while impingement of the beam is stopped.Type: GrantFiled: February 23, 1995Date of Patent: December 17, 1996Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masaru Kanaoka, Homare Mori, Takayuki Yuyama, Shozui Takeno
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Patent number: 4689466Abstract: A laser-beam operated machining apparatus capable of performing machining operations on a high-reflectivity material such as aluminum or copper. A nozzle is provided for applying a focused laser beam together with an assist gas to a surface of a workpiece to be machined. An annular electrode is provided on the end of the nozzle confronting the workpiece with the electrode being coaxial with the laser beam. An arc discharge is created between the annular electrode and the workpiece by applying a voltage between the annular electrode and the workpiece so as to cause an arc discharge therebetween.Type: GrantFiled: April 10, 1985Date of Patent: August 25, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Susumu Hoshinouchi, Masaru Kanaoka, Atsushi Fukada