Patents by Inventor Takayuki Nakajima
Takayuki 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: 11112571Abstract: An optical subassembly may include a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon. The optical subassembly may also include a carrier on which the plurality of optical semiconductor devices are mounted. Adjacent ones of the plurality of optical semiconductor devices may be located at positions shifted in a second direction orthogonal to the first direction and may be shifted in the first direction so as not to face each other in the second direction.Type: GrantFiled: September 3, 2019Date of Patent: September 7, 2021Assignee: Lumentum Japan, Inc.Inventors: Yuji Sekino, Akira Nakanishi, Takayuki Nakajima
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Patent number: 11081858Abstract: An optical transmitter module includes optical semiconductor devices including a first optical semiconductor device, a temperature adjustment means for collectively performing temperature adjustment on the optical semiconductor devices, and a first thermal resistor that is disposed between the first optical semiconductor device and the temperature adjustment means, in which, when the temperature adjustment means is driven, the temperature of the first optical semiconductor device is higher than temperatures of other optical semiconductor devices which are different from the first optical semiconductor device.Type: GrantFiled: March 22, 2018Date of Patent: August 3, 2021Assignee: Lumentum Japan, Inc.Inventors: Shunya Yamauchi, Yoshihiro Nakai, Takayuki Nakajima, Masahiro Ebisu
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Patent number: 11073449Abstract: A smear preparing apparatus includes: a smear unit that prepares a smear slide by smearing a sample on a slide; a buffer solution preparation unit that prepares diluted buffer solution by diluting a highly-concentrated buffer solution; a diluted staining solution preparation unit that prepares diluted staining solution by diluting a highly-concentrated staining solution with the diluted buffer solution; and a stain unit that stains the smear slide prepared by the smear unit with the diluted staining solution.Type: GrantFiled: August 28, 2017Date of Patent: July 27, 2021Assignee: SYSMEX CorporationInventors: Noriyuki Nakanishi, Mitsuo Yamasaki, Seiya Shinabe, Tetsuya Oda, Saki Kondo, Takayuki Nakajima
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Publication number: 20210083243Abstract: A battery module including a plurality of battery cells that prevents the movement of the battery cells due to impact and has excellent cooling performance of the battery cells includes a battery cell group including a laminate of a plurality of flattened rectangular battery cells stacked in a thickness direction of the battery cells, and a housing storing the battery cell group. The battery cell group includes a plurality of cell holders configured to hold the individual battery cells from both sides in the thickness direction, and a plurality of side plates disposed at both ends of the plurality of battery cells in a width direction via the plurality of cell holders. Each of the cell holders has a restriction portion configured to restrict movement of the corresponding battery cell in a direction intersecting the thickness direction, and fixing portions that engage with the side plates.Type: ApplicationFiled: November 19, 2018Publication date: March 18, 2021Applicant: VEHICLE ENERGY JAPAN INC.Inventors: Masayuki NAKAMOTO, Takayuki NAKAJIMA
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Publication number: 20210066707Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: September 11, 2020Publication date: March 4, 2021Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20210057886Abstract: A modulation doped semiconductor laser includes a multiple quantum well composed of a plurality of layers including a plurality of first layers and a plurality of second layers stacked alternately and including an acceptor and a donor; a p-type semiconductor layer in contact with an uppermost layer of the plurality of layers; and an n-type semiconductor layer in contact with a lowermost layer of the plurality of layers, the plurality of first layers including the acceptor so that a p-type carrier concentration is 10% or more and 150% or less of the p-type semiconductor layer, the plurality of second layers containing the acceptor so that the p-type carrier concentration is 10% or more and 150% or less of the p-type semiconductor layer, the plurality of second layers containing the donor, and an effective carrier concentration corresponding to a difference between the p-type carrier concentration and an n-type carrier concentration is 10% or less of the p-type carrier concentration of the plurality of second lType: ApplicationFiled: April 10, 2020Publication date: February 25, 2021Inventors: Takayuki NAKAJIMA, Atsushi NAKAMURA, Yuji SEKINO
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Publication number: 20210048588Abstract: An optical subassembly may include a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon. The optical subassembly may also include a carrier on which the plurality of optical semiconductor devices are mounted. Adjacent ones of the plurality of optical semiconductor devices may be located at positions shifted in a second direction orthogonal to the first direction and may be shifted in the first direction so as not to face each other in the second direction.Type: ApplicationFiled: September 3, 2019Publication date: February 18, 2021Inventors: Yuji SEKINO, Akira NAKANISHI, Takayuki NAKAJIMA
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Publication number: 20210036280Abstract: Provided is a battery pack capable of improving load resistance of a reinforcing part and protecting battery cells inside a case. The battery pack 100 includes a reinforcing part 30 that is in contact with a bottom wall 10e of the case 10. The reinforcing part 30 extends in one direction D1 along the bottom wall 10e, and has dimensions d1, d2 in directions orthogonal to the one direction D1 that are larger than thickness t of side walls 10a, 10b, 10c, 10d of the case 10 and of the bottom wall 10e. The reinforcing part 30 has a pair of end fixed parts 31 that are fixed to both ends of the battery module 20 in the one direction D1, and an intermediate fixed part 32 between the pair of end fixed parts 31 and fixed to the battery module 20 or the case 10.Type: ApplicationFiled: December 18, 2018Publication date: February 4, 2021Applicant: VEHICLE ENERGY JAPAN INC.Inventors: Hitoshi NISHIMORI, Takayuki NAKAJIMA
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Publication number: 20200353971Abstract: A steering module includes a steering wheel which is provided in front of a driver seat, a column cover which is provided on a vehicle front side of the steering wheel, extends in a forward and rearward direction of a vehicle, and has a functional component mounting region in at least one of an inner inside and an upper portion thereof, and a meter member which is formed integrally with the column cover and includes a main display portion disposed at a position spaced apart from the column cover.Type: ApplicationFiled: March 24, 2020Publication date: November 12, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventor: Takayuki Nakajima
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Publication number: 20200287090Abstract: A semiconductor optical device includes an element structure layer that includes a mesa stripe extending in a first direction; an electrode film that covers at least an upper surface of the mesa stripe; an electrode pad portion that covers a part of a first region positioned in a second direction, intersecting the first direction, relative to the mesa stripe on an upper surface of the element structure layer and is electrically connected to the electrode film; a first dummy electrode that covers another part of the first region and is electrically insulated from the electrode film; and a second dummy electrode that covers at least a part of a second region positioned in a third direction, opposite to the second direction, relative to the mesa stripe on the upper surface of the element structure layer and is electrically insulated from the electrode film, wherein the first dummy electrode includes a first portion disposed in the first direction relative to the electrode pad portion and a second portion disposeType: ApplicationFiled: March 6, 2020Publication date: September 10, 2020Inventors: Masahiro EBISU, Takayuki NAKAJIMA, Yuji SEKINO
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Patent number: 10730124Abstract: A pipe-tapered-thread machining tap has a thread, four spiral flutes and four cutting edges that include a plurality of thread intersection portions at each of which a corresponding one of the four cutting edges intersects with the thread. The thread intersection portions of the cutting edges have four groups, such that each of the four groups has ones of the thread intersection portions that are portions of a corresponding one of the four cutting edges. Every two of the thread intersection portions of each of the four groups is removed, such that, in each of the four groups, at least one of the thread intersection portions that is removed and at least another one of the thread intersection portions that is not removed are alternately arranged in a direction in which a corresponding one of the four cutting edges extends.Type: GrantFiled: March 8, 2016Date of Patent: August 4, 2020Assignee: OSG CORPORATIONInventors: Takayuki Nakajima, Kohichi Saitoh
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Patent number: 10700489Abstract: Provided is an optical semiconductor device including a semiconductor substrate; a first semiconductor multilayer that is stacked on a first surface side of the semiconductor substrate, has a mesa structure extending along a light emitting direction, and emits light from an exit end surface; an electrode pad portion for wire bonding which is electrically connected to the upper surface of the mesa structure of the first semiconductor multilayer, is disposed on one side of the mesa structure, and is electrically connected to outside; and an electrode pad peripheral portion including a first rising surface which is in contact with the outer edge of the electrode pad portion on the exit end surface side and rises along the stacking direction from the electrode pad portion, in which a lower surface of the electrode pad portion is higher than the upper surface of the mesa structure of the first semiconductor multilayer.Type: GrantFiled: March 26, 2018Date of Patent: June 30, 2020Assignee: Lumentum Japan, Inc.Inventors: Akira Nakanishi, Noriko Sasada, Takayuki Nakajima
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Publication number: 20200144571Abstract: A battery pack provided with a plurality of battery cells, the battery pack making it possible to achieve higher safety than before during handling work. The battery pack is provided with a battery group in which the plurality of battery cells are stacked, and a housing in which the battery group is accommodated. The housing, with respect to a first direction and a second direction perpendicular to a height direction of the housing and to each other, has a dimension in the first direction which is made smaller than a dimension in the second direction. The battery group is eccentrically located on one side in the first direction in the housing.Type: ApplicationFiled: June 19, 2018Publication date: May 7, 2020Applicant: VEHICLE ENERGY JAPAN INC.Inventors: Hanzhi YANG, Takayuki NAKAJIMA
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Patent number: 10598677Abstract: A smear transporting apparatus transports a smear slide on which a sample is smeared to a smear-image capture apparatus. The smear transporting apparatus includes a smear-container transport part that transports a first smear container accommodating smear slides to a smear pickup position; a smear transfer part that picks a smear slide whose image is to be captured by the smear-image capture apparatus from the first smear container transported to the smear pickup position, transfers the smear slide to the smear-image capture apparatus, and places the smear slide whose image has been captured by the smear-image capture apparatus in a second smear container different from the first smear container; and a storage that stores the first smear container and the second smear container.Type: GrantFiled: July 28, 2017Date of Patent: March 24, 2020Assignee: SYSMEX CORPORATIONInventors: Takayuki Nakajima, Katsuaki Yamaguchi, Tetsuya Oda, Seiya Shinabe, Mitsuo Yamasaki
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Patent number: 10562118Abstract: A pipe-tapered-thread machining spiral tap includes a tapered thread portion that is circumferentially divided by flutes into a plurality of lands. Each of at least one of the lands has a cutting edge that extends along a corresponding one of the flutes. The flutes are made of a plurality of spiral flutes that are three, four or five spiral flutes each having a helix angle that is not smaller than 30° and smaller than 50°. A flute width ratio AG/(AG+AL) is 0.3-0.5, where AG represents a central angle which is subtended by each of the flutes and which is defined at a center corresponding to the rotation axis in a cross section that is perpendicular to the rotation axis, and AL represents a central angle which is subtended by each of the lands and which is defined at the center in the cross section.Type: GrantFiled: December 2, 2015Date of Patent: February 18, 2020Assignee: OSG CORPORATIONInventor: Takayuki Nakajima
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Publication number: 20190280353Abstract: A cell pack includes a battery group which includes a plurality of secondary battery cells each having a pair of wide-width surfaces, a pair of narrow-width surfaces, a bottom surface, and an external terminal formed to face the bottom surface; a housing which has one side surface, another side surface adjacent to the one side surface, and a facing side surface facing the other side surface and houses the battery group; and a pack external terminal which is disposed adjacent to the facing side surface of the housing and is connected to the external terminal of the battery group, wherein the secondary battery cells of the battery group are stacked so that the wide-width surfaces face each other, the battery group is housed in the housing in a state in which a wide-width surface of a secondary battery cell of a lowermost layer and the one side surface of the housing are coupled to each other so as to be capable of conducting heat therebetween and the bottom surfaces of the secondary battery cells and the otherType: ApplicationFiled: February 5, 2018Publication date: September 12, 2019Inventors: Yukinori TAKAHASHI, Youichi NAKANO, Takayuki NAKAJIMA, Hisayuki SUEMATSU
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Publication number: 20190260096Abstract: A battery pack includes: battery groups which are formed by stacking a plurality of battery cells each including a terminal surface having one side in a longitudinal direction including a positive electrode terminal and the other side in the longitudinal direction including a negative electrode terminal, and a pair of stacked surfaces adjacent to the terminal surface so that the terminal surfaces of the plurality of battery cells are directed in the same direction and the positive electrode terminal and the negative electrode terminal are alternately arranged, the stacked surfaces facing each other; and a holder which accommodates two or more kinds of electric components electrically connected to the battery groups and is disposed so that the electric components face a surface in which the positive electrode terminals and the negative electrode terminals of the battery groups are arranged.Type: ApplicationFiled: February 5, 2018Publication date: August 22, 2019Inventors: Takayuki NAKAJIMA, Youichi NAKANO, Hisayuki SUEMATSU, Yukinori TAKAHASHI
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Publication number: 20190252672Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts, and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Publication number: 20190201993Abstract: A pipe-tapered-thread machining tap has a thread, four spiral flutes and four cutting edges that include a plurality of thread intersection portions at each of which a corresponding one of the four cutting edges intersects with the thread. The thread intersection portions of the cutting edges have four groups, such that each of the four groups has ones of the thread intersection portions that are portions of a corresponding one of the four cutting edges. Every two of the thread intersection portions of each of the four groups is removed, such that, in each of the four groups, at least one of the thread intersection portions that is removed and at least another one of the thread intersection portions that is not removed are alternately arranged in a direction in which a corresponding one of the four cutting edges extends.Type: ApplicationFiled: March 8, 2016Publication date: July 4, 2019Applicant: OSG CORPORATIONInventors: Takayuki NAKAJIMA, Kohichi SAITOH
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Patent number: D861593Type: GrantFiled: September 29, 2017Date of Patent: October 1, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takayuki Nakajima, Hisayuki Suematsu, Youichi Nakano