Patents by Inventor Akihiro Nakajima
Akihiro Nakajima 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: 11959197Abstract: A first aspect of the present invention is carbon fiber wherein the surface of a monofilament has a center line average roughness Ra of 6.0 nm or more and 13 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. A second aspect of the present invention is carbon fiber precursor acrylic fiber wherein the surface of a monofilament has a center line average roughness Ra of 18 nm or more and 27 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. The carbon fiber according to the first aspect is obtained by stabilizing and carbonizing under specific conditions the carbon fiber precursor acrylic fiber according to the second aspect.Type: GrantFiled: August 15, 2019Date of Patent: April 16, 2024Assignee: Mitsubishi Chemical CorporationInventors: Naomasa Matsuyama, Yuutarou Nakamura, Norifumi Hirota, Hiroko Matsumura, Katsuhiko Ikeda, Kouki Wakabayashi, Tadashi Ootani, Akihiro Itou, Kenji Hirano, Akito Hatayama, Kenji Kaneta, Atsushi Nakajima
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Patent number: 11781991Abstract: An object of the present invention is to provide a simple method of detecting a protein in a liquid, which requires less labor or cost as compared with a conventional method. In the present invention, it has been found that coloring a protein by a color reaction specific to the protein, performing filtration using a filter which easily adsorbs a protein to concentrate the protein on the filter, and checking coloration allows for simply and easily detecting and measuring a protein. In addition, it has been found that filtering a protein using a filter, concentrating the protein on the filter, then coloring the protein by a color reaction specific to the protein, and checking the protein allows simply and easily detecting and measuring a protein.Type: GrantFiled: November 9, 2018Date of Patent: October 10, 2023Assignee: MEIJI CO., LTD.Inventors: Akihiro Nakajima, Keiko Morikubo
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Publication number: 20230228702Abstract: Provided is a gas sensor element capable of realizing highly accurate concentration measurement in both environments where the concentration of a specific gas in a measurement target gas is high and where the concentration is low. A gas sensor according to one aspect of the present invention determines whether the concentration of a predetermined gas component in a measurement target gas is higher or lower than a predetermined concentration. If it is determined that the concentration is lower, a specific temperature that a sensor element is to reach as a result of being heated by a heater unit is set to be lower than the specific temperature set if it is determined that the concentration is higher.Type: ApplicationFiled: January 13, 2023Publication date: July 20, 2023Inventors: Yusuke WATANABE, Yasumasa FUJIOKA, Yohei GORO, Akihiro NAKAJIMA, Shotaro NIIZUMA
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Publication number: 20230228703Abstract: Provided is a gas sensor element capable of realizing both highly accurate concentration measurement in environments where the concentration of a specific gas in a measurement target gas is high and highly accurate concentration measurement in environments where the concentration is low. A gas sensor according to one aspect of the present invention adjusts a sensor element drive temperature such that the value of cell resistance of a main pump cell is a predetermined value. Further, in the gas sensor according to one aspect of the present invention, the slope of the cell resistance of the main pump cell is larger than the slope of cell resistance of a measurement pump cell.Type: ApplicationFiled: January 13, 2023Publication date: July 20, 2023Inventors: Yusuke WATANABE, Yasumasa FUJIOKA, Yohei GORO, Akihiro NAKAJIMA, Shotaro NIIZUMA
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Publication number: 20230194463Abstract: A gas sensor includes an element body, a pump cell, an impedance measurer, and a calculation unit. The pump cell has an inner electrode disposed in a measurement-object gas flow section of the element body, and an outer electrode disposed outside an element body to come into contact with a measurement-object gas, the pump cell being configured to adjust an oxygen concentration in a vicinity of the inner electrode. The impedance measurer performs first measurement to measure a first impedance by applying a voltage having a first frequency to the pump cell, and second measurement to measure a second impedance by applying a voltage having a second frequency higher than the first frequency to the pump cell. The calculation unit calculates the reaction resistance index correlated with the reaction resistance of the pump cell, based on the first and second impedances.Type: ApplicationFiled: December 15, 2022Publication date: June 22, 2023Inventors: Yohei GORO, Yusuke WATANABE, Akihiro NAKAJIMA, Toshihiro HIRAKAWA
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Publication number: 20200371036Abstract: An object of the present invention is to provide a simple method of detecting a protein in a liquid, which requires less labor or cost as compared with a conventional method. In the present invention, it has been found that coloring a protein by a color reaction specific to the protein, performing filtration using a filter which easily adsorbs a protein to concentrate the protein on the filter, and checking coloration allows for simply and easily detecting and measuring a protein. In addition, it has been found that filtering a protein using a filter, concentrating the protein on the filter, then coloring the protein by a color reaction specific to the protein, and checking the protein allows simply and easily detecting and measuring a protein.Type: ApplicationFiled: November 9, 2018Publication date: November 26, 2020Applicant: MEIJI CO., LTD.Inventors: Akihiro NAKAJIMA, Keiko MORIKUBO
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Patent number: 8955633Abstract: A two-wheeled motor vehicle has a rear cushion unit that includes a damper cylinder having one end part linked to a swing arm, a sub-tank connected to the damper cylinder and an adjustment mechanism for adjusting a damping force in response to operation of the operation element is provided between a vehicle body frame and the swing arm. A cylinder body of the damper cylinder, a bottomed housing tube part housing the adjustment mechanism having on an upper end part an operation face on which the operation element is disposed, and the sub-tank are integrally and connectedly provided. The operation face is inclined obliquely upward so that the operation element that faces a region bounded by the seat frame, the pillion step holder mounted on the seat frame and the swing arm when viewed from the side can be operated from obliquely above on the outside.Type: GrantFiled: May 25, 2012Date of Patent: February 17, 2015Assignee: Honda Motor Co., Ltd.Inventors: Hironori Nakamura, Taisuke Nimura, Akihiro Nakajima
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Publication number: 20140084565Abstract: A two-wheeled motor vehicle has a rear cushion unit that includes a damper cylinder having one end part linked to a swing arm, a sub-tank connected to the damper cylinder and an adjustment mechanism for adjusting a damping force in response to operation of the operation element is provided between a vehicle body frame and the swing arm. A cylinder body of the damper cylinder, a bottomed housing tube part housing the adjustment mechanism having on an upper end part an operation face on which the operation element is disposed, and the sub-tank are integrally and connectedly provided. The operation face is inclined obliquely upward so that the operation element that faces a region bounded by the seat frame, the pillion step holder mounted on the seat frame and the swing arm when viewed from the side can be operated from obliquely above on the outside.Type: ApplicationFiled: May 25, 2012Publication date: March 27, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Hironori Nakamura, Taisuke Nimura, Akihiro Nakajima
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Patent number: 8130269Abstract: Around-vehicle visual recognition apparatus, methods, and programs acquire circumstances of a vehicle, including the vehicle's location and cause a camera to take images around the vehicle. The apparatus, methods, and programs determine at least one first area around the vehicle that is more relevant to a driver based on the circumstances of the vehicle than another area around the vehicle and display an image of the at least one first area on a display.Type: GrantFiled: March 8, 2006Date of Patent: March 6, 2012Assignee: Aisin AW Co., Ltd.Inventors: Toshihiro Mori, Akihiro Nakajima
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Patent number: 8078356Abstract: In a driving assist system for a vehicle, a camera driver controls an on-board rear camera to take an image of an area around a vehicle only when light-emitting diodes of the tail lights and brake lights are non-luminous, responsive to an image pickup timing signal output from a light control. An image processor executes panoramic view conversion of image data input from the camera driver, stores the converted data in an image memory, and displays a composite image by combining a plurality of sets of panoramic view data.Type: GrantFiled: May 23, 2007Date of Patent: December 13, 2011Assignee: Aisin AW Co., Ltd.Inventors: Toshihiro Kano, Akihiro Nakajima
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Publication number: 20090319126Abstract: A target vehicle speed for traveling a predetermined road section ahead of a host vehicle is obtained, and an acceleration gear ratio, which is a gear ratio for accelerating the host vehicle to a vehicle speed faster than the target vehicle speed after traveling through the predetermined road section, is also obtained. If a driving support control settings indicates that execution of a gear ratio control is permitted, a gear ratio of the host vehicle is set to the acceleration gear ratio before the host vehicle reaches a start point of the predetermined road section. If the driving support control settings indicate that execution of a deceleration control using the brake portion is permitted, a braking portion is controlled so as to decelerate a vehicle speed of the host vehicle to the target vehicle speed before the host vehicle reaches the start point of the predetermined road section.Type: ApplicationFiled: April 29, 2009Publication date: December 24, 2009Applicant: AISIN AW CO., LTD.Inventors: Takayuki MIYAJIMA, Akihiro NAKAJIMA
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Patent number: 7463972Abstract: A navigation apparatus includes a memory that stores registered routes, wherein each registered route includes a previously traveled route, a corresponding starting point, and a corresponding destination point. The navigation apparatus includes a controller that searches for a route from a specified starting point to a specified destination point, compares the searched route with the registered routes, and utilizes, if a corresponding starting point is substantially identical to the specified starting point or a corresponding destination point is substantially identical to the specified destination point, a portion of a registered route including the substantially identical starting point or the substantially identical destination point as a navigation route.Type: GrantFiled: July 27, 2004Date of Patent: December 9, 2008Assignee: AISIN AW Co., Ltd.Inventors: Kunihiro Yamada, Shino Kimura, Kihachi Hayashida, Minoru Ootake, Akihiro Nakajima, Nobuo Suzuki, Atsuya Ooshima
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Publication number: 20070282501Abstract: In a driving assist system for a vehicle, a camera driver controls an on-board rear camera to take an image of an area around a vehicle only when light-emitting diodes of the tail lights and brake lights are non-luminous, responsive to an image pickup timing signal output from a light control. An image processor executes panoramic view conversion of image data input from the camera driver, stores the converted data in an image memory, and displays a composite image by combining a plurality of sets of panoramic view data.Type: ApplicationFiled: May 23, 2007Publication date: December 6, 2007Applicant: AISIN AW CO., LTD.Inventors: Toshihiro Kano, Akihiro Nakajima
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Publication number: 20060215020Abstract: Around-vehicle visual recognition apparatus, methods, and programs acquire circumstances of a vehicle, including the vehicle's location and cause a camera to take images around the vehicle. The apparatus, methods, and programs determine at least one first area around the vehicle that is more relevant to a driver based on the circumstances of the vehicle than another area around the vehicle and display an image of the at least one first area on a display.Type: ApplicationFiled: March 8, 2006Publication date: September 28, 2006Applicant: Aisin AW Co., Ltd.Inventors: Toshihiro Mori, Akihiro Nakajima
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Publication number: 20050071078Abstract: A navigation apparatus includes a memory that stores registered routes, wherein each registered route includes a previously traveled route, a corresponding starting point, and a corresponding destination point. The navigation apparatus includes a controller that searches for a route from a specified starting point to a specified destination point, compares the searched route with the registered routes, and utilizes, if a corresponding starting point is substantially identical to the specified starting point or a corresponding destination point is substantially identical to the specified destination point, a portion of a registered route including the substantially identical starting point or the substantially identical destination point as a navigation route.Type: ApplicationFiled: July 27, 2004Publication date: March 31, 2005Applicant: AISIN AW CO., LTD.Inventors: Kunihiro Yamada, Shino Kimura, Kihachi Hayashida, Minoru Ootake, Akihiro Nakajima, Nobuo Suzuki, Atsuya Ooshima
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Publication number: 20040249534Abstract: A power supply management system and method for an on-board device that, when required by a user of the on-board device and/or when a power supply is capable of supplying electric power, allows remote operation of the on-board device by supplying electric power to a communication device so as to place it in a communication-capable state. Further, when not required by the user of the on-board device and/or when the power supply is not capable of supplying electric power, it is possible to inhibit discharge of a power supply by interrupting supply of electric power to the communication device.Type: ApplicationFiled: March 30, 2004Publication date: December 9, 2004Inventors: Kunihiro Yamada, Satoshi Ogawa, Nobuo Suzuki, Akihiro Nakajima
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Patent number: 5661622Abstract: A rotary magnetic recording and reproducing apparatus includes a stationary cylinder formed on a lower portion of an outer peripheral surface thereof with a guide lead for guiding a lower edge of a magnetic tape and defining a tape running face on an upper portion of the outer peripheral surface thereof, a first bulge portion formed on an upper edge portion of the tape running face of the stationary cylinder on a tape leaving side of the upper edge portion of the tape running face and a second bulge portion which is smaller in height than the first bulge portion and formed on the upper edge portion of the tape running face on the tape leaving side thereof and in the vicinity of the first bulge portion on a tape incoming side of the first bulge portion. The first bulge portion serves to relax shock or vibration of a magnetic tape leaving the magnetic head and the second bulge portion serves to improve "head-touch" of the magnetic tape.Type: GrantFiled: July 29, 1996Date of Patent: August 26, 1997Assignee: Hitachi, Ltd.Inventors: Masanori Kochi, Akihiro Nakajima, Yoshio Uemura, Toshihiko Imachi, Kuniaki Hirayama, Eijiro Tazawa, Kiyokazu Watanabe
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Patent number: 5650428Abstract: An arylsulfonamide derivative of the formula (I): ##STR1## wherein R.sup.1 is unsubstituted phenyl or naphthyl, or phenyl substituted by 1 to 3 same or different substituents selected from the group consisting of halogen, alkyl, nitro and alkoxy, R.sup.2 is straight, branched, or branched cyclic alkyl with 1 to 15 carbon atoms, phenyl, phenyloxyl, phenyloxy substituted by one or more halogen atoms, cycloalkyl with 5 to 7 carbon atoms, indolyl, alkylthiol with 1 to 4 carbon atoms, hydroxyl, protected hydroxyl, imidazolyl, pyridyloxyl, or --OSO.sub.2 R.sup.4, R.sup.4 is straight or branched alkyl with 1 to 15 carbon atoms, or unsubstituted phenyl or thienyl, or phenyl or thienyl substituted by 1 to 3 same or different substituents of halogen, alkyl, nitro and alkoxy, R.sup.3 is hydrogen or straight or branched alkyl with 1 to 20 carbon atoms, n is an integer of 0 to 10, p is an integer of 0 to 10, X is a group of the formula--(CH.sub.2)m-A-(CH.sub.Type: GrantFiled: February 28, 1995Date of Patent: July 22, 1997Assignee: NKK CorporationInventors: Masayuki Ohmori, Shin-Ichi Sawamura, Takehiro Yamamoto, Yoshiko Kawada, Shihoko Maeda, Takeshi Yago, Akihiro Nakajima, Masatsugu Mizuguchi, Yasuo Miyoshi
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Patent number: 5305820Abstract: A method of controlling drawing of a cast piece in horizontal continuous casting, in which drawing is controlled in accordance with an inwardly curved passage to keep the acceleration low at the start of the drawing and to increase it gradually in the drawing process for the purpose of reducing the number of bubbles appearing on the surface layer of the cast piece by sucking the ambient air into the mold when drawing the cast piece.Type: GrantFiled: July 17, 1992Date of Patent: April 26, 1994Assignee: NKK CorporationInventors: Masahiro Tsuru, Tatuo Saiki, Akihiro Nakajima
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Patent number: 4924329Abstract: The present invention relates to a magnetic recording and reproducing device wherein reproduction monitoring can be made directly after recording, and more particularly to a construction of a rotary drum for the same. The magnetic recording and reproducing device includes a single recording channel for n recording magnetic heads, and n reproducing channels for n reproducing magnetic heads. The recording channel is provided either on an innermost circumference side or on an outermost circumference side of a rotary transformer. Since the device has such a reduced number of recording channels, the distance between adjacent channels can be increased and the transmission loss of a reproduction signal can be reduced.Type: GrantFiled: October 18, 1988Date of Patent: May 8, 1990Assignee: Hitachi, Ltd.Inventors: Kenmei Masuda, Kenji Ogiro, Yoshinori Okada, Akihiro Nakajima, Mashanori Kochi, Kazutoshi Konno