Patents by Inventor Takashi Kurahashi
Takashi Kurahashi 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: 11945882Abstract: Crystals of the compound represented by formula (1), a method for the production thereof, and a method for producing an antibody-drug conjugate using the crystals.Type: GrantFiled: August 30, 2018Date of Patent: April 2, 2024Assignee: DAIICHI SANKYO COMPANY, LIMITEDInventors: Tatsuya Yamaguchi, Takashi Kouko, Shigeru Noguchi, Yohei Yamane, Fumikatsu Kondo, Takahiro Aoki, Tadahiro Takeda, Kohei Sakanishi, Hitoshi Sato, Tsuyoshi Ueda, Shinji Matuura, Kei Kurahashi, Yutaka Kitagawa, Tatsuya Nakamura
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Patent number: 9012153Abstract: To provide a method for objectively evaluating or screening to identify a substance which is capable of suppressing or regulating olfaction. A method of evaluating or screening to identify an agent for suppressing olfactory sensitivity, including adding a test substance to a substrate having a voltage-dependent cation channel and evaluating or selecting a substance that inhibits an electrical activity caused by the cation channel.Type: GrantFiled: April 10, 2009Date of Patent: April 21, 2015Assignee: Kao CorporationInventors: Kentaro Kumihashi, Hirohiko Ishida, Takashi Kurahashi
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Publication number: 20110050246Abstract: To provide a method for objectively evaluating or screening to identify a substance which is capable of suppressing or regulating olfaction. A method of evaluating or screening to identify an agent for suppressing olfactory sensitivity, including adding a test substance to a substrate having a voltage-dependent cation channel and evaluating or selecting a substance that inhibits an electrical activity caused by the cation channel.Type: ApplicationFiled: April 10, 2009Publication date: March 3, 2011Applicant: Kao CorporationInventors: Kentaro Kumihashi, Hirohiko Ishida, Takashi Kurahashi
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Patent number: 6562147Abstract: A connecting material, which secures reliable joints without using flux, is disclosed. Soldering is performed using an auxiliary connecting material capable of physically destroying and dispersing an oxide film, which is naturally grown on the surface of a main connecting material such as solder or brazing between two terminals, to realize a reliable solder wetting (a state of the main connecting material being fused and mixed). For an auxiliary connecting material, hydrocarbon such as n-tetradecane (C14H30), for example, can be used. N-tetradecane boils between connection surfaces and cubically expands; energy generated therefrom physically disperses the oxide film and causes a fresh surface to be exposed; solders on both terminals are mixed; and an electrical and mechanical joint is securely achieved. The residue of the auxiliary connecting material is an insulating material, and therefore does not need cleaning.Type: GrantFiled: March 30, 2001Date of Patent: May 13, 2003Assignee: Denso CorporationInventors: Toshihiro Miyake, Koii Kondo, Takashi Kurahashi, Nozomu Okumura, Makoto Takagi
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Publication number: 20010023028Abstract: A soldering method, which secures reliable joints without using flux, is disclosed. Soldering is performed using an auxiliary connecting material capable of physically destroying and dispersing an oxide film, which is naturally grown on the surface of a main connecting material such as solder or brazing between two terminals, to realize a reliable solder wetting (a state of the main connecting material being fused and mixed). For an auxiliary connecting material, hydrocarbon such as n-tetradecane (C14H30), for example, can be used. N-tetradecane boils between connection surfaces and cubically expands; energy generated therefrom physically disperses the oxide film and causes a fresh surface to be exposed; solders on both terminals are mixed; and an electrical and mechanical joint is securely achieved. The residue of the auxiliary connecting material is an insulating material, and therefore does not need cleaning. An excellent electrical joint which is moisture-resistant as well as highly reliable is attained.Type: ApplicationFiled: March 30, 2001Publication date: September 20, 2001Applicant: NIPPONDENSO CO., LTD.Inventors: Toshihiro Miyake, Koii Kondo, Takashi Kurahashi, Nozomu Okumura, Makoto Takagi
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Patent number: 6218030Abstract: A soldered product having secure reliable joints, without the use of flux, is disclosed. The soldered product includes a first member having a connected portion and a second member, also having a connected portion, facing the first member. The connected portions of the first and second members are electrically connected by a connecting material. A layer of hydrocarbon, including alkane, alkene or alkyne, is disposed around the periphery of the connecting material.Type: GrantFiled: August 7, 1997Date of Patent: April 17, 2001Assignee: Nippondenso Co., Ltd.Inventors: Toshihiro Miyake, Koji Kondo, Takashi Kurahashi, Nozomu Okumura, Makoto Takagi
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Patent number: 5904860Abstract: Nitrogen atoms on the surface of a first body are terminated by hydrogen atoms after the surfaces of the first body and a second body to which it is to be bonded are cleaned. The surface of the first body terminated by the hydrogen atoms and the surface of the second body are bonded to each other so that hydrogen bonds are formed between the nitrogen atoms and the bonded hydrogen atoms on the surface of the first body and the atoms on the surface of the second body. Using these hydrogen bonds, the surface of the first body and the surface of the second body are strongly bonded to each other. When the surface of the second body is formed with nitride or oxide, strong hydrogen bonds of N--H .sup.- - - N or N--H .sup.- - - O are formed between the first body and the second body. Thus, the method does not require bonding under high temperature or high pressure.Type: GrantFiled: September 12, 1996Date of Patent: May 18, 1999Assignee: Nippondenso Co., Ltd.Inventors: Masao Nagakubo, Harumi Suzuki, Takashi Kurahashi
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Patent number: 5824177Abstract: A semiconductor wafer, which can be divided into chips at a high yield and a low cost and easily handled during transfer thereof as well, is disclosed. In a semiconductor wafer of such structure that structures with a low mechanical strength, such as suspended microstructures, are exposed at a surface thereof, detachable adhesive sheet making up protective caps for the respective suspended microstructures are formed over the semiconductor wafer. By means of this, even if the semiconductor wafer is diced into the individual chips, respective microstructures on chips are protected from the external force, such as the pressure of cutting water, during the dicing process.Type: GrantFiled: July 12, 1996Date of Patent: October 20, 1998Assignee: Nippondenso Co., Ltd.Inventors: Shinji Yoshihara, Sumitomo Inomata, Fumio Ohara, Takashi Kurahashi
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Patent number: 5734055Abstract: A process for preparing a N-tert-butyl-2-pyrazinecarboxamide having the formula (2): ##STR1## which comprises reacting a cyanopyrazine having the formula (1): ##STR2## with tert-butyl alcohol in the presence of sulfuric acid and a process for preparing a N-tert-butyl-2-piperazine-carboxamide having the formula (3): ##STR3## which comprises hydrogenating of said N-tert-butyl-2-pyrazinecarboxamide having the formula (2) in the presence of Raney nickel or Raney cobalt.Type: GrantFiled: July 20, 1995Date of Patent: March 31, 1998Assignee: Koei Chemical Co. Ltd.Inventors: Nanao Watanabe, Sadao Asahi, Hideki Kuranishi, Takashi Kurahashi
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Patent number: 5669548Abstract: A soldering method, which secures reliable joints without using flux, is disclosed. Soldering is performed using an auxiliary connecting material capable of physically destroying and dispersing an oxide film, which is naturally grown on the surface of a main connecting material such as solder or brazing between two terminals, to realize a reliable solder wetting (a state of the main connecting material being fused and mixed). For an auxiliary connecting material, hydrocarbon such as n-tetradecane (C.sub.14 H.sub.30), for example, can be used. N-tetradecane boils between connection surfaces and cubically expands; energy generated therefrom physically disperses the oxide film and causes a fresh surface to be exposed; solders on both terminals are mixed; and an electrical and mechanical joint is securely achieved. The residue of the auxiliary connecting material is an insulating material, and therefore does not need cleaning.Type: GrantFiled: March 22, 1996Date of Patent: September 23, 1997Assignee: Nippondenso Co., Ltd.Inventors: Toshihiro Miyake, Koji Kondo, Takashi Kurahashi, Nozomu Okumura, Makoto Takagi
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Patent number: 5668033Abstract: On a silicon wafer there is formed a movable gate MOS transistor (sensing element: functional element). A bonding frame consisting of a silicon thin film is patterned around an element formation region on the surface of the silicon wafer. On a cap forming silicon wafer there is projectively provided a leg portion on the bottom surface of which a bonding layer consisting of a gold film is formed. The cap forming silicon wafer is disposed on the silicon wafer, whereupon heating with respect thereto is performed at a temperature equal to higher than a gold/silicon eutectic temperature to thereby make bondage between the bonding frame of the silicon wafer and the bonding layer of the cap forming silicon wafer. Thereafter, the both wafers are diced in chip units.Type: GrantFiled: May 17, 1996Date of Patent: September 16, 1997Assignee: Nippondenso Co., Ltd.Inventors: Fumio Ohara, Shinji Yoshihara, Katuhiko Kanamori, Takashi Kurahashi
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Patent number: 4648425Abstract: A system and a method of confirming the operation of a steam relieving safety valve for a water-cooled nuclear reactor are provided. Acoustic vibration generated by steam relieved from the safety valve when the latter is opened is detected by an acoustic emission sensor. The acoustic emission sensor is mounted on the safety valve or a steam relief pipe connected to the safety valve.Type: GrantFiled: August 20, 1980Date of Patent: March 10, 1987Assignee: Doryokuro Kakunenryo Kaihatsu JigyodanInventors: Kenshu Watanabe, Tadashi Uchikawa, Masashi Takiyama, Takashi Kurahashi
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Patent number: 4636643Abstract: In a fog detecting apparatus with optoelectronic system, comprising infrared-emitting means and infrared-receiving means, is provided means for adjusting a reference which is compared with a voltage value of a detecting signal generated according to an electrical signal produced by the infrared-receiving means in order to distinguish whether a windshield of a vehicle is in the fogging condition or not. The reference is changed according to the detecting signal which is produced when the windshield is in good condition against the fogging after a fog removing apparatus has been actuated to remove the fog attached on the windshield, so that the fogging condition is detected in accuracy independently of the contamination of the optoelectronic system or the like.Type: GrantFiled: July 25, 1984Date of Patent: January 13, 1987Assignee: Nippondenso Co., Ltd.Inventors: Kanehito Nakamura, Kazuma Matsui, Takashi Kurahashi, Hiroshi Ishikawa
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Patent number: 4625329Abstract: An image analyzer for analyzing the position of a vehicle driver in a three-dimensional coordinate system. The analyzer comprises a light emitting element for emitting an infrared light the driver's face portion and an image detector arranged to receive reflected infrared light to generate an optical image of the driver's face portion. A microcomputer includes a memory for storing an electronic image corresponding to the optical image and processes the stored image to determine the position of a facial feature, such as an eye, in a three-dimensional coordinate system. Position indicating data is utilized in a driver assistance system.Type: GrantFiled: January 18, 1985Date of Patent: November 25, 1986Assignee: Nippondenso Co., Ltd.Inventors: Hiroshi Ishikawa, Kazuma Matsui, Takashi Kurahashi, Hidehiko Akatsuka, Motokazu Yamada
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Patent number: 4595866Abstract: An automotive wiper control apparatus has an infrared emitting unit outside an occupant compartment, a photodetector unit inside the compartment in optical alignment with the infrared emitting unit, and an electric control for automatically controlling the wiper operation in dependence on the state in which infrared rays emitted by the infrared emitting unit through a predetermined area of the windshield are received by the photodetector unit. The photodetector unit has an infrared transmission plate formed of an infrared transmissive material and carrying infrared shielding layers applied in a striped pattern to one surface of the plate. The infrared transmission plate is disposed in front of a plurality of photodetectors so that a contrast is produced on the photodetectors by the infrared rays passing through the uncoated zones of the plate which are free from the infrared shielding layers. The contrast is varied with variation in the quantity of raindrops on the predetermined area of the windshield.Type: GrantFiled: October 26, 1984Date of Patent: June 17, 1986Assignee: Nippondenso Co., Ltd.Inventors: Yoshiaki Fukatsu, Takashi Kurahashi, Kazuma Matsui
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Patent number: 4476419Abstract: A windshield wiper control device for use on a vehicle includes a light-emitting unit mounted on the vehicle outside of a compartment for emitting a ray of infrared radiation, a photodetector unit mounted on the vehicle within the compartment and having a slit plate for producing an image of a striped pattern with bright and dark areas in response to exposure to the ray of electromagnetic radiation through the windshield and an array of photodetectors for sensing the bright and dark areas of the striped image and generating signals indicative of the bright and dark areas, and an arithmetic circuit arrangement for computing a contrast of the bright and dark areas based on the signals from the photodetectors and controlling the speed and/or period of operation of the windshield wiper based on the computed contrast.Type: GrantFiled: May 31, 1983Date of Patent: October 9, 1984Assignee: Nippondenso Co., Ltd.Inventors: Yoshiaki Fukatsu, Takashi Kurahashi, Kazuma Matsui, Hiroki Ito
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Patent number: 4361927Abstract: A device for preventing the vibration of a windshield wiper including a weight having two ends each secured to one of opposite ends of a pin extending through the end of a holder and separated from each other a suitable distance for the holder and the weight to move relative to each other between the two ends of the pin. The device is mounted on an auxiliary support member of a wiper blade for avoiding the wiper blade being separated from the surface of the windshield by the pressure of air when the vehicle travels at high speed.Type: GrantFiled: May 21, 1981Date of Patent: December 7, 1982Assignee: Kazuma MatsuiInventors: Kazuma Matsui, Takashi Kurahashi, Masahiko Suzuki, Kiyoshi Kawaguchi
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Patent number: 4184804Abstract: A rotary electric machine having a cooling fan comprises a housing of which a front wall has a plurality of air vents. A fan carried and driven by a rotary shaft of the rotary electric machine is arranged near the outer surface of the front end wall of the housing. The fan comprises a disk-shaped fan base plate securely attached to the rotary shaft and a plurality of blades formed by bending by about 90.degree. the peripheral portions of the fan base plate having suitable notches and slots. The width of the blade is gradually reduced from its radially inner edge to its radially outer edge. The front end wall of the housing has a funnel-shaped surface corresponding to the edge of the blade.Type: GrantFiled: June 19, 1978Date of Patent: January 22, 1980Assignee: Nippon Soken, Inc.Inventors: Mitsuo Inagaki, Hideaki Sasaya, Takashi Kurahashi
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Patent number: 4115030Abstract: A rotary electric machine comprising a housing containing therein several parts which are to be heated during operation of the machine, and a centrifugal cooling fan for producing an air circulation through the housing so as to cool the heated parts. The cooling fan is made of a disc-shaped metal plate having on its periphery a plurality of fan blades each formed by bending a radially outer portion of the metal plate upstandingly with respect to the surface thereof, and a plurality of notches each defined between the adjacent fan blades. A backing disc-plate is disposed at the back side of the cooling fan in a manner to block therewith the notches, thereby preventing an air from passing through the notches in an opposite direction from an ordinary air flow passing through the housing. The disc-plate and the cooling fan are disposed to define a small clearance therebetween for preventing rattling noises from being produced during rotation of the cooling fan due to an occasional vibratory contact therebetween.Type: GrantFiled: February 17, 1977Date of Patent: September 19, 1978Assignee: Nippon Soken, Inc.Inventors: Mitsuo Inagaki, Hideaki Sasaya, Takashi Kurahashi