Patents by Inventor Kenji Fujimoto
Kenji Fujimoto 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: 9263629Abstract: According to one embodiment, a semiconductor light emitting device includes a semiconductor laminated body provided on a semiconductor substrate. The semiconductor laminated body includes a light emitting layer. The light emitting layer includes a quantum well structure made by alternately laminating n (an integer of not less than 1) well layers and (n+1) barrier layers and emits light with a peak wavelength of 650 nm to 1000 nm. Each of the well layers has a thickness of smaller than 15 nm. Each of the barrier layers has a thickness of 15 nm to 50 nm.Type: GrantFiled: September 6, 2013Date of Patent: February 16, 2016Assignee: Kabushiki Kaisha ToshibaInventor: Kenji Fujimoto
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Patent number: 9070817Abstract: A photocoupler includes: a light emitting element; a light receiving element; and a bonding layer. The light emitting element includes a semiconductor stacked body, and a first and a second electrode. The semiconductor stacked body includes a light emitting layer. The light receiving element includes a first and a second electrode on a side of a light receiving surface. The bonding layer bonds the light emitting element and the light receiving surface, and has transparency and insulating property.Type: GrantFiled: September 6, 2013Date of Patent: June 30, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Kenji Fujimoto, Masanobu Iwamoto
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Patent number: 9061689Abstract: An air spring according to this invention enables easy and reliable adjustment of a space between stoppers. Specifically, an upper member (3) and a lower member (4) are secured to upper and lower ends of a bellows (2). Stopper faces (5) and (6) that come in contact with each other to limit the amount of displacement of the upper member (3) are formed on the upper member (3) and the lower member (4). A movable body (7) that can move vertically to adjust the height of the stopper face (6) is provided in the lower member (4). A holding body (8) is provided that holds the movable body (7) in a manner that enables vertical movement thereof. The movable body (7) is capable of relative rotation around a central axis (18) with respect to the holding body (8). On at least one of the movable body (7) and the holding body (8), tapers (32) and (41) are formed that are capable of sliding with respect to the other of the movable body (7) and the holding body (8).Type: GrantFiled: March 28, 2011Date of Patent: June 23, 2015Assignees: TOYO TIRE & RUBBER CO., LTD., KAWASAKI HEAVY INDUSTRIES LTD.Inventors: Kenji Fujimoto, Takehiro Nishimura, Keiichiro Kamura
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Patent number: 8845400Abstract: An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm2. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.Type: GrantFiled: December 21, 2010Date of Patent: September 30, 2014Assignees: Nippon Steel & Sumikin Anti-Corrosion Co., Ltd., Dai Nippon Toryo Co., LtdInventors: Atsumi Imai, Takehide Aiga, Masanori Nagai, Takayuki Sato, Kenji Fujimoto, Tsuyoshi Matsumoto, Hiroshi Kihira
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Publication number: 20140284548Abstract: According to one embodiment, a semiconductor light emitting device includes a semiconductor laminated body provided on a semiconductor substrate. The semiconductor laminated body includes a light emitting layer. The light emitting layer includes a quantum well structure made by alternately laminating n (an integer of not less than 1) well layers and (n+1) barrier layers and emits light with a peak wavelength of 650 nm to 1000 nm. Each of the well layers has a thickness of smaller than 15 nm. Each of the barrier layers has a thickness of 15 nm to 50 nm.Type: ApplicationFiled: September 6, 2013Publication date: September 25, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Kenji Fujimoto
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Publication number: 20140247806Abstract: A wireless communication terminal according to an embodiment includes a wireless LAN communication unit, a prediction unit which predicts a moving area of a user, an estimation unit, and a communication control unit. The estimation unit estimates a switching state of a wireless LAN connection in the wireless LAN communication unit, on the basis of a wireless LAN communication environment in the moving area predicted by the prediction unit. The communication unit restricts the wireless LAN connection in the wireless LAN communication unit, on the basis of the switching state estimated by the estimation unit.Type: ApplicationFiled: December 24, 2013Publication date: September 4, 2014Applicant: Yahoo Japan CorporationInventors: Kenji FUJIMOTO, Yasuo TOMINE
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Publication number: 20140117597Abstract: An air spring for railroad cars includes an air spring part formed by an upper support on a vehicle body side, an intermediate support arranged therebelow, and a diaphragm made of rubber and extending between the upper support and the intermediate support; and an elastic mechanism b formed by a rubber mass 5 interposed between the intermediate support and a lower support 4 on a bogie side arranged therebelow. The rubber mass 5 has an end in contact with the lower support 4 formed as an enlarged end 5A increasing in diameter as approaching the lower support 4 in a vertical direction. An outer circumferential portion of this enlarged end is fitted in and bonded to an annular groove 12 formed in the lower support 4, and the annular groove 12 has an annular bottom 12A inclined to decrease in height radially outwards to have an annular tapered bottom 12a.Type: ApplicationFiled: July 8, 2011Publication date: May 1, 2014Applicant: TOYO TIRE & RUBBER CO., LTD.Inventor: Kenji Fujimoto
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Publication number: 20140084305Abstract: A photocoupler includes: a light emitting element; a light receiving element; and a bonding layer. The light emitting element includes a semiconductor stacked body, and a first and a second electrode. The semiconductor stacked body includes a light emitting layer. The light receiving element includes a first and a second electrode on a side of a light receiving surface. The bonding layer bonds the light emitting element and the light receiving surface, and has transparency and insulating property.Type: ApplicationFiled: September 6, 2013Publication date: March 27, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Kenji Fujimoto, Masanobu Iwamoto
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Publication number: 20130313764Abstract: An air spring according to this invention enables easy and reliable adjustment of a space between stoppers. Specifically, an upper member (3) and a lower member (4) are secured to upper and lower ends of a bellows (2). Stopper faces (5) and (6) that come in contact with each other to limit the amount of displacement of the upper member (3) are formed on the upper member (3) and the lower member (4). A movable body (7) that can move vertically to adjust the height of the stopper face (6) is provided in the lower member (4). A holding body (8) is provided that holds the movable body (7) in a manner that enables vertical movement thereof. The movable body (7) is capable of relative rotation around a central axis (18) with respect to the holding body (8). On at least one of the movable body (7) and the holding body (8), tapers (32) and (41) are formed that are capable of sliding with respect to the other of the movable body (7) and the holding body (8).Type: ApplicationFiled: March 28, 2011Publication date: November 28, 2013Applicants: KAWASAKI HEAVY INDUSTRIES LTD., TOYO TIRE & RUBBER CO., LTD.Inventors: Kenji Fujimoto, Takehiro Nishimura, Keiichiro Kamura
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Patent number: 8511653Abstract: In an air spring for a railway vehicle or the like, an upper end 3a of the flexible member 3 is attached to the upper face plate 1 at a position that is further on an outer side in a radial direction than the concave section 7. A lower end 3b of the flexible member 3 is attached to the lower face plate 2 at a position that is further on an outer side in a radial direction than the deflation stopper section 5. The deflation stopper section 5 is formed so as to have a height such that the upper end 3a and the lower end 3b of the flexible member do not contact as a result of a relative displacement in the horizontal direction between the upper face plate 1 and the lower face plate 2 at a time of deflation.Type: GrantFiled: June 1, 2011Date of Patent: August 20, 2013Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Kenji Fujimoto
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Patent number: 8475424Abstract: The disposable pull-on garment has a longitudinal centerline, a front region, a crotch region, and a back region. The front and back regions are joined at seams to form a waist opening and leg openings. The pull-on garment comprises a main portion, a side portion, and a waist portion. The side portion is disposed transversely outboard of the main portion. The waist portion comprises a center waist portion, an outer side waist portion, and an inner side waist portion. The contraction rate of the inner side waist portion is less than that of the center waist portion, and the contraction rate of the side portion longitudinally inboard of the inner side waist portion is greater than that of the inner side waist portion.Type: GrantFiled: June 13, 2007Date of Patent: July 2, 2013Assignee: The Procter & Gamble CompanyInventors: Kenji Fujimoto, Haruko Sato, Masato Higaki, Toshiyuki Matsuda, Hiroshi Nakahata
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Patent number: 8452452Abstract: The grip position calculator determines a grip position where the fingers can grip a workpiece in any orientation of the workpiece. The calculator then determines an initial position where the finger tips can grip the workpiece and set the initial position as a point of calculation. Then an allowable gripping force is calculated which is an index that indicates an allowable force to be applied to the workpiece at point. Then other allowable forces are calculated for a plurality of points near the point of calculation. Then the point of calculation is selected as a possible gripping position if the allowable force a point is greater than any of the allowable forces. Otherwise, one of the points is selected for another point of calculation where the greatest allowable force (De) has been calculated and return to calculating an allowable gripping force.Type: GrantFiled: January 28, 2010Date of Patent: May 28, 2013Assignees: Honda Motor Co., Ltd., National University CorporationInventors: Toshiyuki Kondo, Shinji Sawada, Nobuhiro Nanba, Yoshikazu Hayakawa, Kenji Fujimoto, Akira Nakashima, Takashi Uno
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Patent number: 8417072Abstract: According to one embodiment, a light emitting device includes a substrate, a light emitting layer, a first conductivity type layer, a first and a second distributed Bragg reflector layer. The first conductivity type layer is provided between the substrate and the light emitting layer. The first reflector layer is provided between the first conductivity type layer and the substrate. First and second layers are alternately stacked therein. The second layers have refractive index different from that of the first layers. The first reflector layer has a center wavelength substantially same as emission wavelength of emission light. The second reflector layer is provided between the light emitting layer and the first reflector layer. Third and fourth layers are alternately stacked therein. The fourth layers have refractive index different from that of the third layers. The second reflector layer has a center wavelength longer than the center wavelength of the first reflector layer.Type: GrantFiled: February 18, 2011Date of Patent: April 9, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Koichi Genei, Kenji Fujimoto, Miwa Ishida
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Patent number: 8302451Abstract: A can manufacturing device in which a tool supporting base has: a plurality of working tool units that support a plurality of working tools; a supporting member that supports a plurality of working tool units; and a linear driving mechanism that reciprocates the working tool units with respect to the supporting member in the axial direction of a workpiece. The linear driving mechanism has: a guide section that is fixed on the supporting member with a base plate therebetween; a slide rail that is fixed on the working tool unit and slides along the guide section; an electromagnetic coil provided on the base plate; a magnet plate that is provided on the working tool unit and generates, between the electromagnetic coil and itself, a thrust force for the guide section; and a supply pipe that is provided at the electromagnetic coil and supplies coolant to the inside of the electromagnetic coil.Type: GrantFiled: March 10, 2008Date of Patent: November 6, 2012Assignee: Mitsubishi Materials CorporationInventors: Syouji Matsuo, Kenji Fujimoto, Masahiro Hosoi
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Publication number: 20120270484Abstract: An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm2. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.Type: ApplicationFiled: December 21, 2010Publication date: October 25, 2012Applicants: DAI NIPPON TORYO CO., LTD, NITTETSU ANTI-CORROSION CO., LTDInventors: Atsumi Imai, Takehide Aiga, Masanori Nagai, Takayuki Sato, Kenji Fujimoto, Tsuyoshi Matsumoto, Hiroshi Kihira
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Publication number: 20120235191Abstract: According to one embodiment, a semiconductor light emitting device includes a light emitting layer, a first layer, a second layer and a distributed Bragg reflector. The light emitting layer has a first and second surfaces and is capable of emitting emission light having a peak wavelength in a range of 740 nm or more and 830 nm or less. The first layer is provided on a side of the first surface and has a light extraction surface. The second layer is provided on a side of the second surface. The distributed Bragg reflector layer is provided on a side of the second layer. A third and fourth layers are alternately stacked. The distributed Bragg reflector layer is capable of reflecting the emission light toward the light extraction surface. The third and fourth layers each have a bandgap wavelength shorter than the peak wavelength.Type: ApplicationFiled: September 16, 2011Publication date: September 20, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Miwa ISHIDA, Kenji Fujimoto
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Publication number: 20120079446Abstract: A semiconductor module made from a compound semiconductor or diamond and loaded with high performance power semiconductor devices can be obtained at low cost. In a semiconductor module, four (semiconductor chips) of same specifications are arranged in array, two longitudinally and two transversally, on a single lead frame. Achieving a high yield of manufacturing diode chips and reducing the unuseful area of diode chips need to be satisfied at the same time to obtain such a semiconductor module at low cost. The use of an index, which is the product of the yield YDie of manufacturing chips and the active region area ratio RA is effective for determining them. Thus, semiconductor modules can be obtained at a high yield by selecting a chip size that makes the index close to a peak value depending on the crystal defect density of a wafer to be used.Type: ApplicationFiled: September 21, 2011Publication date: March 29, 2012Inventors: Hiromichi KUMAKURA, Hiroyuki Ogino, Kenji Fujimoto, Masanori Ueno
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Publication number: 20120056362Abstract: In an air spring for a railway vehicle or the like, an upper end 3a of the flexible member 3 is attached to the upper face plate 1 at a position that is further on an outer side in a radial direction than the concave section 7. A lower end 3b of the flexible member 3 is attached to the lower face plate 2 at a position that is further on an outer side in a radial direction than the deflation stopper section 5. The deflation stopper section 5 is formed so as to have a height such that the upper end 3a and the lower end 3b of the flexible member do not contact as a result of a relative displacement in the horizontal direction between the upper face plate 1 and the lower face plate 2 at a time of deflation.Type: ApplicationFiled: June 1, 2011Publication date: March 8, 2012Applicant: Toyo Tire & Rubber Co., Ltd.Inventor: Kenji Fujimoto
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Publication number: 20120027341Abstract: According to one embodiment, a light emitting device includes a substrate, a light emitting layer, a first conductivity type layer, a first and a second distributed Bragg reflector layer. The first conductivity type layer is provided between the substrate and the light emitting layer. The first reflector layer is provided between the first conductivity type layer and the substrate. First and second layers are alternately stacked therein. The second layers have refractive index different from that of the first layers. The first reflector layer has a center wavelength substantially same as emission wavelength of emission light. The second reflector layer is provided between the light emitting layer and the first reflector layer. Third and fourth layers are alternately stacked therein. The fourth layers have refractive index different from that of the third layers. The second reflector layer has a center wavelength longer than the center wavelength of the first reflector layer.Type: ApplicationFiled: February 18, 2011Publication date: February 2, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koichi Genei, Kenji Fujimoto, Miwa Ishida
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Patent number: D691479Type: GrantFiled: December 7, 2012Date of Patent: October 15, 2013Assignee: The Procter & Gamble CompanyInventors: Ian Roy Calisin Bea, Jie Lai Chan, Thierry Christian Francis Dagnelie, Kenji Fujimoto, Taichi Kodani, Akiko Taneko