Patents by Inventor Kazuyoshi Takayama
Kazuyoshi Takayama 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: 20150114613Abstract: A method for manufacturing a heat exchanger is provided. The heat exchanger includes a plurality of plate-like fins that are stacked with a predetermined fin pitch, and a plurality of flat heat exchanger tubes that are disposed with a predetermined spacing from one another along the longitudinal direction of the plate-like fins and extend through the plate-like fins along the stacking direction. The plate-like fins each have a plurality of notches provided in an end portion along the long side. The plate-like fins have a shape corresponding to the cross-sectional shape of the flat heat exchanger tubes, and the flat heat exchanger tubes are inserted into the notches. The manufacturing method includes disposing the flat heat exchanger tubes with a predetermined spacing from one another, and attaching the plate-like fins to the flat heat exchanger tubes one by one by inserting the flat heat exchanger tubes into the notches of each of the plate-like fins.Type: ApplicationFiled: June 29, 2012Publication date: April 30, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Wataru Suzuki, Kazuyoshi Takayama, Tomohiko Takahashi
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Publication number: 20140163417Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pulses of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicants: TOHOKU UNIVERSITY, SEIKO EPSON CORPORATIONInventors: Takeshi SETO, Kazuo KAWASUMI, Kazuyoshi TAKAYAMA, Seyed Hamid Reza HOSSEINI
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Publication number: 20140088628Abstract: A fluid injection device includes a fluid supply unit that accommodates and supplies fluid, a fluid injection unit that injects fluid supplied from the fluid supply unit, and a driving waveform generating device which is equipped with at least one adjusting device, a one-input multiple-control parameter changing unit that simultaneously changes plural control parameters for determining a fluid injection condition of the fluid injection unit on the basis of a signal from the at least one adjusting device, and a driving waveform generator that generates and outputs a driving waveform of the fluid injection unit on the basis of the control parameters set by the one-input multiple-control parameter changing unit.Type: ApplicationFiled: December 2, 2013Publication date: March 27, 2014Applicant: Seiko Epson CorporationInventors: Takeshi SETO, Kazuyoshi TAKAYAMA, Atsuhiro NAKAGAWA, Viren Ivor MENEZES
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Patent number: 8652091Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pulses of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: GrantFiled: November 13, 2012Date of Patent: February 18, 2014Assignees: Seiko Epson Corporation, Tohoku UniversityInventors: Takeshi Seto, Kazuo Kawasumi, Kazuyoshi Takayama, Seyed Hamid Reza Hosseini
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Patent number: 8623039Abstract: A fluid injection device includes a fluid supply unit that accommodates and supplies fluid, a fluid injection unit that injects fluid supplied from the fluid supply unit, and a driving waveform generating device which is equipped with at least one adjusting device, a one-input multiple-control parameter changing unit that simultaneously changes plural control parameters for determining a fluid injection condition of the fluid injection unit on the basis of a signal from the at least one adjusting device, and a driving waveform generator that generates and outputs a driving waveform of the fluid injection unit on the basis of the control parameters set by the one-input multiple-control parameter changing unit.Type: GrantFiled: March 18, 2013Date of Patent: January 7, 2014Assignee: Seiko Epson CorporationInventors: Takeshi Seto, Kazuyoshi Takayama, Atsuhiro Nakagawa, Viren Ivor Menezes
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Publication number: 20130274726Abstract: Provided are an optical fiber which has good laser beam condensation efficiency and is highly resilient, and a shockwave generating device employing same. An optical fiber (11) is employed in an underwater shockwave generating device (10) which projects a laser beam underwater and generates an underwater shockwave. The optical fiber (11) comprises: a main body part (16); and a laser convergence part (17) which is disposed upon a leading end thereof. The laser convergence part (17) is configured so as to exhibit an approximately frustum shape wherein the diameter of the leading end (18a) is narrower than the diameter of the base end (18b), and such that an interior angle ? with respect to a radial direction of a lateral face, of an axial cross-section gradually decreases toward the front thereof.Type: ApplicationFiled: July 27, 2011Publication date: October 17, 2013Applicant: TOHOKU UNIVERSITYInventors: Kazuyoshi Takayama, Hiroaki Yamamoto, Hiroaki Shimokawa
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Patent number: 8425544Abstract: A fluid injection device includes a fluid supply unit that accommodates and supplies fluid, a fluid injection unit that injects fluid supplied from the fluid supply unit, and a driving waveform generating device which is equipped with at least one adjusting device, a one-input multiple-control parameter changing unit that simultaneously changes plural control parameters for determining a fluid injection condition of the fluid injection unit on the basis of a signal from the at least one adjusting device, and a driving waveform generator that generates and outputs a driving waveform of the fluid injection unit on the basis of the control parameters set by the one-input multiple-control parameter changing unit.Type: GrantFiled: July 25, 2008Date of Patent: April 23, 2013Assignee: Seiko Epson CorporationInventors: Takeshi Seto, Kazuyoshi Takayama, Atsuhiro Nakagawa, Viren Ivor Menezes
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Patent number: 8337452Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pulses of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: GrantFiled: February 2, 2011Date of Patent: December 25, 2012Assignees: Seiko Epson Corporation, Tohoku UniversityInventors: Takeshi Seto, Kazuo Kawasumi, Kazuyoshi Takayama, Seyed Hamid Reza Hosseini
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Patent number: 8308745Abstract: A fluid jet device being provided with a fluid jet aperture section and producing a jet of fluid from the fluid jet aperture section includes: a pulsation generation section including a fluid chamber whose capacity can be changed, an inlet fluid path linked through the fluid chamber with a volume smaller than that of the fluid chamber, and an outlet fluid path linked through the fluid chamber and the fluid jet aperture section with an inertance set smaller than that of the inlet fluid path; and a pressure generation section that supplies the fluid to the inlet fluid path.Type: GrantFiled: August 1, 2008Date of Patent: November 13, 2012Assignee: Seiko Epson CorporationInventors: Takeshl Seto, Kazuyoshi Takayama
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Patent number: 8256530Abstract: An object is to provide a method capable of boring a borehole even when quartz glass or silicon dioxide is deposited as molten dross by laser irradiation. A laser irradiation position of a workpiece is irradiated with a laser having wavelength of 1.2 ?m or longer and a high factor of absorption into liquid, for example, a CO2 laser, from a laser oscillator through liquid. By high pressure generated in an advancing microbubble flow occurring in the liquid, molten dross is scattered. Thus, the processing, such as boring, of the rock is performed.Type: GrantFiled: December 18, 2007Date of Patent: September 4, 2012Assignees: Japan Drilling Co., Ltd., Tohoku University, Japan Oil, Gas and Metals National CorporationInventors: Toshio Kobayashi, Kazuyoshi Takayama, Kiyonobu Ohtani, Satoru Umezu
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Publication number: 20110125086Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pulses of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: ApplicationFiled: February 2, 2011Publication date: May 26, 2011Applicants: SEIKO EPSON CORPORATION, TOHOKU UNIVERSITYInventors: Takeshi SETO, Kazuo KAWASUMI, Kazuyoshi TAKAYAMA, Seyed Hamid Reza HOSSEINI
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Patent number: 7901374Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pulses of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: GrantFiled: September 25, 2007Date of Patent: March 8, 2011Assignees: Seiko Epson Corporation, Tohoku UniversityInventors: Takeshi Seto, Kazuo Kawasumi, Kazuyoshi Takayama, Seyed Hamid Reza Hosseini
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Patent number: 7802384Abstract: An excavation technique for a stratum capable of excavating a submerged stratum such as a layer containing an underground resource by using laser irradiation in liquid is provided. In this technique, a laser beam transmitted through laser transmission means 20 is irradiated in liquid 90 in form of a laser beam having a wavelength with high absorptance of the liquid 90 by laser-induced bubble generation means 35, generating a bubble flow 36, thus excavation of a submerged stratum may be carried out by using a laser-induced destruction effect. Moreover, a laser beam 41 having low absorptance of the liquid 90 is irradiated by laser irradiation means 39 and passed through the bubble flow 36, thereby applying a thermal effect to a stratum to destroy rock and excavate the stratum. The destruction effect and the thermal effect also may be cooperatively worked.Type: GrantFiled: March 16, 2006Date of Patent: September 28, 2010Assignees: Japan Drilling Co., Ltd., Tohoku University, National University Corporation the University of Electro-CommunicationsInventors: Toshio Kobayashi, Kazuyoshi Takayama, Ken-ichi Ueda, Kazuhisa Otomo, Shigehito Uetake
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Patent number: 7740626Abstract: The laser induced liquid jet generating apparatus irradiates a laser beam on a liquid in a main body, guides the generated liquid jet into a catheter via a nozzle, and generates a flow in the direction opposite the liquid jet. Even by the use of a catheter having a small outside diameter, therefore, the apparatus is enabled to effect powerful laser irradiation without being thermally affected by the laser beam and consequently shatter thrombus, for example, and recover by aspiration the shattered thrombus through the distal end of the catheter.Type: GrantFiled: November 17, 2004Date of Patent: June 22, 2010Assignee: Terumo Kabushiki KaishaInventors: Kazuyoshi Takayama, Takayuki Hirano, Atsuhiro Nakagawa, Hideshi Obitsu, Shigeru Omori, Takeshi Kanamaru
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Publication number: 20100001179Abstract: An object is to provide a method capable of boring a borehole even when quartz glass or silicon dioxide is deposited as molten dross by laser irradiation. A laser irradiation position of a workpiece is irradiated with a laser having wavelength of 1.2 ?m or longer and a high factor of absorption into liquid, for example, a CO2 laser, from a laser oscillator through liquid. By high pressure generated in an advancing microbubble flow occurring in the liquid, molten dross is scattered. Thus, the processing, such as boring, of the rock is performed.Type: ApplicationFiled: December 18, 2007Publication date: January 7, 2010Applicants: JAPAN DRILLING CO., LTD., TOHOKU UNIVERSITY, JAPAN OIL, GAS AND METALS NATIONAL CORPORATIONInventors: Toshio Kobayashi, Kazuyoshi Takayama, Kiyonobu Ohtani, Satoru Umezu
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Publication number: 20090126235Abstract: An excavation technique for a stratum capable of excavating a submerged stratum such as a layer containing an underground resource by using laser irradiation in liquid is provided. In this technique, a laser beam transmitted through laser transmission means 20 is irradiated in liquid 90 in form of a laser beam having a wavelength with high absorptance of the liquid 90 by laser-induced bubble generation means 35, generating a bubble flow 36, thus excavation of a submerged stratum may be carried out by using a laser-induced destruction effect. Moreover, a laser beam 41 having low absorptance of the liquid 90 is irradiated by laser irradiation means 39 and passed through the bubble flow 36, thereby applying a thermal effect to a stratum to destroy rock and excavate the stratum. The destruction effect and the thermal effect also may be cooperatively worked.Type: ApplicationFiled: March 16, 2006Publication date: May 21, 2009Applicants: JAPAN DRILLING CO., LTD., TOHOKU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION THE UNIVERSITY OF ELECTROCOMMUNICATIONSInventors: Toshio Kobayashi, Kazuyoshi Takayama, Ken-ichi Ueda, Kazuhisa Otomo, Shigehito Uetake
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Publication number: 20090043320Abstract: A fluid jet device being provided with a fluid jet aperture section and producing a jet of fluid from the fluid jet aperture section includes: a pulsation generation section including a fluid chamber whose capacity can be changed, an inlet fluid path linked through the fluid chamber with a volume smaller than that of the fluid chamber, and an outlet fluid path linked through the fluid chamber and the fluid jet aperture section with an inertance set smaller than that of the inlet fluid path; and a pressure generation section that supplies the fluid to the inlet fluid path.Type: ApplicationFiled: August 1, 2008Publication date: February 12, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Takeshi SETO, Kazuyoshi TAKAYAMA
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Publication number: 20090043480Abstract: A fluid injection device includes a fluid supply unit that accommodates and supplies fluid, a fluid injection unit that injects fluid supplied from the fluid supply unit, and a driving waveform generating device which is equipped with at least one adjusting device, a one-input multiple-control parameter changing unit that simultaneously changes plural control parameters for determining a fluid injection condition of the fluid injection unit on the basis of a signal from the at least one adjusting device, and a driving waveform generator that generates and outputs a driving waveform of the fluid injection unit on the basis of the control parameters set by the one-input multiple-control parameter changing unit.Type: ApplicationFiled: July 25, 2008Publication date: February 12, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Takeshi SETO, Kazuyoshi TAKAYAMA, Atsuhiro NAKAGAWA, Viren Ivor MENEZES
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Publication number: 20080086077Abstract: A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage, having an end portion; a second connection flow passage connected to the inlet flow passage; a fluid injection opening formed at the end portion of the first connection flow passage, having a diameter smaller than the diameter of the outlet flow passage; a connection flow passage tube including the first connection flow passage and having rigidity adequate to transmit pules of fluid flowing from the fluid chamber to the fluid injection opening; and a pressure generation section that supplies fluid to the inlet flow passage.Type: ApplicationFiled: September 25, 2007Publication date: April 10, 2008Applicants: SEIKO EPSON CORPORATION, TOHOKU UNIVERSITYInventors: Takeshi Seto, Kazuo Kawasumi, Kazuyoshi Takayama, Seyed Hosseini
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Publication number: 20050124985Abstract: The laser induced liquid jet generating apparatus irradiates a laser beam on a liquid in a main body, guides the generated liquid jet into a catheter via a nozzle, and generates a flow in the direction opposite the liquid jet. Even by the use of a catheter having a small outside diameter, therefore, the apparatus is enabled to effect powerful laser irradiation without being thermally affected by the laser beam and consequently shatter thrombus, for example, and recover by aspiration the shattered thrombus through the distal end of the catheter.Type: ApplicationFiled: November 17, 2004Publication date: June 9, 2005Applicant: Terumo Kabushiki KaishaInventors: Kazuyoshi Takayama, Takayuki Hirano, Atsuhiro Nakagawa, Hideshi Obitsu, Shigeru Omori, Takeshi Kanamaru