Patents by Inventor Akihito Hongo
Akihito Hongo 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: 20200352648Abstract: An abnormality detection system for highly precise detection of an abnormality in a laser treatment device includes a laser transmission tube coupled with a laser treatment unit, oscillating laser light, a discharge-side water pressure sensor, and a water pressure detection liquid surface level meter detecting a change in a pressure of cooling water flowing through forward-direction and a backward-direction spaces in the laser transmission tube. The laser transmission tube includes a hollow wavelength path having a lightguide space formed in a longitudinal direction, and an outer case enclosing an outer circumferential surface of the hollow waveguide path and extending in the longitudinal direction. The discharge-side water pressure sensor and the water pressure detection liquid surface level meter detect the change in the pressure of the cooling water flowing through in a forward-direction space and a backward-direction space to detect any abnormality.Type: ApplicationFiled: July 30, 2020Publication date: November 12, 2020Applicant: J. MORITA MFG. CORP.Inventors: Yoshiteru TAMURA, Yoshihide OKAGAMI, Akihito HONGO, Katsumi HIYOSHI, Haruhiko MURAKAMI
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Patent number: 10792102Abstract: A laser tip, a laser treatment tool, a laser treatment device and a laser treatment system are provided for performing laser treatment surgery and minimizing any bleeding. A laser tip is attachable to a laser radiation opening located at the tip end of a laser transmission tube. The laser tip includes an attaching portion detachable from the laser radiation opening and a contact portion contactable with biological tissue. The contact portion is at the front of the attaching portion in the direction in which the laser light exits the laser radiation opening. An open space is located between the contact portion and the attaching portion, and a coupler couples a part of the contact portion and a part of the attaching portion. The contact portion has a reflective surface at a rear end thereof which reflects the laser light toward the coupler.Type: GrantFiled: March 18, 2018Date of Patent: October 6, 2020Assignees: J. Morita Mfg. Corp., National University Corporation Kobe UniversityInventors: Yoshihide Okagami, Akihito Hongo, Yoshiteru Tamura, Katsumi Hiyoshi, Haruhiko Murakami, Takeshi Azuma, Yoshinori Morita
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Publication number: 20180325595Abstract: Provided are a laser tip, a laser treatment tool, a laser treatment device and a laser treatment system safely performing a surgery for a laser treatment and, if bleeding occurs, stopping the bleeding. A laser tip 70 is attachable to a laser radiation opening 63a provided at a tip end of a laser transmission tube 63. From the laser radiation opening 63a, laser light 57a is directed.Type: ApplicationFiled: March 18, 2018Publication date: November 15, 2018Applicants: J. Morita Mfg. Corp., National University Corp. Kobe UniversityInventors: Yoshihide Okagami, Akihito Hongo, Yoshiteru Tamura, Katsumi Hiyoshi, Haruhiko Murakami, Takeshi Azuma, Yoshinori Morita
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Patent number: 9827045Abstract: A laser light waveguide device includes laser light provision units that oscillate and cause laser light to exit; a laser light waveguide path formed of an optical fiber capable of guiding the laser light; and a control unit that controls the laser light provision units. The control unit detects an illumination spot (output of the visible laser light) based on a captured image, captured by an image capturing unit, of a laser light illumination area and an area close thereto illuminated with the laser light, and controls exit of the infrared laser light by the infrared laser light provision unit based on a result of detection of the illumination spot (output of the visible laser light).Type: GrantFiled: June 1, 2015Date of Patent: November 28, 2017Assignee: J. Morita Mfg. CorporationInventors: Akihito Hongo, Katsumi Hiyoshi, Masato Wada
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Publication number: 20150349480Abstract: A laser light waveguide device includes laser light provision units that oscillate and cause laser light to exit; a laser light waveguide path formed of an optical fiber capable of guiding the laser light; and a control unit that controls the laser light provision units. The control unit detects an illumination spot (output of the visible laser light) based on a captured image, captured by an image capturing unit, of a laser light illumination area and an area close thereto illuminated with the laser light, and controls exit of the infrared laser light by the infrared laser light provision unit based on a result of detection of the illumination spot (output of the visible laser light).Type: ApplicationFiled: June 1, 2015Publication date: December 3, 2015Applicant: J. MORITA MFG. CORPORATIONInventors: Akihito Hongo, Katsumi Hiyoshi, Masato Wada
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Patent number: 8720040Abstract: A method of manufacturing a hollow waveguide including a metal pipe and a hollow region formed inside of the metal pipe includes pressure-bonding metal pipes each of which includes a metal material different from each other to form a metal-clad pipe including an inside metal layer and an outside metal layer, and polishing a surface of the inside metal layer.Type: GrantFiled: August 29, 2008Date of Patent: May 13, 2014Assignee: Hitachi Metals, Ltd.Inventors: Akihito Hongo, Tadashi Koike
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Publication number: 20130272650Abstract: A wavelength cross connect device includes an input demultiplexing optical system for demultiplexing light input from a plurality of input ports into respective wavelengths, a wavelength switching optical system for switching and outputting the lights of respective wavelengths input from the input demultiplexing optical system to respective desired ports, and an output multiplexing optical system for multiplexing the lights of respective wavelengths input from the wavelength switching optical system per port. The input demultiplexing optical system and the output multiplexing optical system includes a lens system that has a function of focusing lights independently in vertical and widthwise directions.Type: ApplicationFiled: March 25, 2013Publication date: October 17, 2013Applicants: National Institute of Advanced Industrial Science and Technology, KEIO UNIVERSITY, HITACHI CABLE, LTD.Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Masahiko Mori, Hisato Uetsuka, Akihito Hongo, Hiroyuki Tsuda, Keisuke Sorimoto, Nazirul Afham bin Idris
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Patent number: 8270795Abstract: A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.Type: GrantFiled: August 31, 2011Date of Patent: September 18, 2012Assignee: Hitachi Cable, Ltd.Inventors: Akihito Hongo, Yoshinori Kurosawa, Masahiro Ohkawa, Hiroaki Takamiya
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Patent number: 8121452Abstract: A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.Type: GrantFiled: February 19, 2009Date of Patent: February 21, 2012Assignee: Hitachi Cable, Ltd.Inventors: Akihito Hongo, Yoshinori Kurosawa, Masahiro Ohkawa, Hiroaki Takamiya
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Publication number: 20110317970Abstract: A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.Type: ApplicationFiled: August 31, 2011Publication date: December 29, 2011Inventors: Akihito HONGO, Yoshinori KUROSAWA, Masahiro OHKAWA, Hiroaki TAKAMIYA
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Patent number: 7903695Abstract: An optical fiber laser, according to the present invention, has an optical fiber including a core to which a rare earth element is added and a clad disposed around the core, and also has an excitation light source for emitting excitation light incident on a side of the optical fiber. The optical fiber has a corrugated shape on the outer circumference of the clad along the longitudinal direction thereof; and the optical fiber is wound in a spiral form and is bundled in such a way that adjacent sides of the clad are brought into contact with one another.Type: GrantFiled: November 20, 2008Date of Patent: March 8, 2011Assignees: Hitachi Cable, Ltd., Toyota Jidosha Kabushiki Kaisha, Toyota School FoundationInventors: Seiji Kojima, Bing Yao, Kazumasa Ohsono, Akihito Hongo, Akio Sato, Kohei Yanaka, Kazuo Hasegawa, Daisuke Inoue, Hiroshi Ito, Tadashi Ichikawa, Kazuya Saito
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Patent number: 7813386Abstract: The optical fiber 1 for an optical fiber laser is provided with a rare earth element doped core 2 doped with a rare earth element, and a cladding 3 formed at an outer periphery of the rare earth element doped core 2. In the optical fiber 1 for an optical fiber laser, the rare earth element doped core 2 is divided into a plurality of core regions 2a, 2b, . . . , 2n?1, 2n along a longitudinal direction of the optical fiber 1 and dopant concentrations of the rare earth element in respective core regions 2a, 2b, . . . , 2n?1, 2n are different from each other, in order to flatten a temperature distribution of the optical fiber 1 along the longitudinal direction.Type: GrantFiled: July 25, 2008Date of Patent: October 12, 2010Assignee: Hitachi Cable, Ltd.Inventors: Bing Yao, Seiji Kojima, Kazumasa Ohsono, Akihito Hongo
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Patent number: 7792161Abstract: An optical fiber for a fiber laser has: a hollow core region; an inner cladding region having a plurality of holes that extend in a longitudinal direction of the optical fiber and surround the hollow core region; and an outer cladding region that surrounds the inner cladding region. The inner cladding region has a solid part that is made of a glass material into a part or all of which a rare earth element is doped, and the outer cladding region has a refractive index lower than that of the solid part of the inner cladding region.Type: GrantFiled: October 28, 2005Date of Patent: September 7, 2010Assignee: Hitachi Cable, Ltd.Inventor: Akihito Hongo
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Patent number: 7769058Abstract: To provide a low-cost, high reliability and high-powered operation enabled optical fiber laser, in the optical fiber laser for oscillating a laser light by introducing an excitation light for exciting the rare earth elements into the optical fiber doped partially by the rare earth elements, the optical fiber is wrapped around the base member, and one part of the outer circumferential area of the wrapped optical fiber is processed in order to form a flat surface, and one face of the prism is made contacted to the flat surface, and the excitation light is introduced to another surface of the prism.Type: GrantFiled: February 5, 2007Date of Patent: August 3, 2010Assignee: Hitachi Cable, Ltd.Inventors: Akihito Hongo, Kazumasa Ohsono, Bing Yao
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Patent number: 7684449Abstract: A cladding is provided at an outer periphery of a solid-core doped with rare earth ions, and a metal layer is formed to be adjacent to the cladding to provide an optical fiber for a fiber laser device. The metal layer having an inner metal layer and an outer metal layer is disposed along an entire length of the optical fiber for a fiber laser device. An exciting light is incident to the optical fiber for a fiber laser device, and the exciting light is reflection-excited to emit a high power laser oscillation light. A monitoring current is constantly flown into the metal layer. When the disconnection of the optical fiber for a fiber laser device is detected based on the monitoring current, the energization of the optical fiber for a fiber laser device is stopped.Type: GrantFiled: December 3, 2007Date of Patent: March 23, 2010Assignee: Hitachi Cable, Ltd.Inventors: Kazumasa Ohsono, Akihito Hongo, Seiji Kojima, Bing Yao
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Publication number: 20100062098Abstract: The present invention can provide a stamper for minute structure transfer to be excellent in durability. The present invention is characterized by which a minute pattern as formed in one side of a substrate comes in contact with a material to be transferred and the minute pattern is transferred on a resin layer of a surface of the material to be transferred. At least one layer of a thin film is mounted on at least one side of both surfaces of the substrate, the substrate and the thin film are different in a coefficient of linear expansion each other, and the substrate is curved to swell up to be convex in the side of the minute pattern by an internal stress generated in the thin film.Type: ApplicationFiled: August 19, 2009Publication date: March 11, 2010Inventors: Takashi Ando, Nobuaki Kitano, Akihiro Miyauchi, Ryuta Washiya, Kazumasa Ohsono, Akihito Hongo, Tsuneo Shiota
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Patent number: 7664356Abstract: A hollow waveguide has a metal-clad pipe having an inside metal layer and an outside metal layer, and a hollow region formed inside of the metal-clad pipe. The metal-clad pipe is formed by pressure-bonding metal pipes each of which is made of a metal material different from each other.Type: GrantFiled: May 20, 2005Date of Patent: February 16, 2010Assignee: Hitachi Cable, Ltd.Inventors: Akihito Hongo, Tadashi Koike
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Publication number: 20090316733Abstract: The present invention provides an optical fiber, for use in a fiber laser, from which a high-quality single-mode laser beam with high optical power is obtained and also provides a fiber laser that uses the optical fiber. The novel optical fiber, which includes a core to which a rare earth element is doped and a cladding formed around the core, amplifies excitation light to oscillate a laser beam. A mode filter is formed at a predetermined position in the longitudinal direction of the optical fiber.Type: ApplicationFiled: June 18, 2009Publication date: December 24, 2009Inventors: Bing Yao, Kazumasa Ohsono, Akihito Hongo, Akio Satou, Kohei Yanaka, Kazuya Saito
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Publication number: 20090208175Abstract: A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.Type: ApplicationFiled: February 19, 2009Publication date: August 20, 2009Inventors: Akihito HONGO, Yoshinori Kurosawa, Masahiro Ohkawa, Hiroaki Takamiya
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Publication number: 20090129411Abstract: An optical fiber laser, according to the present invention, has an optical fiber including a core to which a rare earth element is added and a clad disposed around the core, and also has an excitation light source for emitting excitation light incident on a side of the optical fiber. The optical fiber has a corrugated shape on the outer circumference of the clad along the longitudinal direction thereof; and the optical fiber is wound in a spiral form and is bundled in such a way that adjacent sides of the clad are brought into contact with one another.Type: ApplicationFiled: November 20, 2008Publication date: May 21, 2009Inventors: Seiji Kojima, Bing Yao, Kazumasa Ohsono, Akihito Hongo, Akio Sato, Kohei Yanaka, Kazuo Hasegawa, Daisuke Inoue, Hiroshi Ito, Tadashi Ichikawa, Kazuya Saito