Patents by Inventor Keita Tanaka
Keita Tanaka 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: 20120056603Abstract: Main circuit of an electric power generating apparatus for dispersed power supply, having a permanent magnet type electric power generator driven by windmill or waterwheel and having three windings, each inducing a different value of induced voltage, AC outputs of the generator rectified by rectifiers, and DC outputs of the rectifiers summed in parallel for output. First and second reactors are respectively connected in series between first and second rectifiers and output terminals of first and second windings, the first winding inducing the lowest induced voltage among the three windings, the second winding inducing the second lowest. A capacitor is connected between a third rectifier and an output terminal of a third winding inducing the highest induced voltage. The sum of inductive impedance by internal inductance of the third winding and capacitive impedance by the capacitor is capacitive impedance within a range of rotational speed of the generator.Type: ApplicationFiled: November 9, 2011Publication date: March 8, 2012Applicant: Toyo Electric Mfg. Co., Ltd.Inventors: Takashi Shiota, Keita Tanaka, Tsutomu Isaka
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Patent number: 8064141Abstract: An optical element includes an airtight container having opposing face walls in a thickness direction, and side walls connecting the end face walls; a first liquid sealed in the container and having polarity or conductivity; a second liquid sealed in the container and not mixed with the first liquid so as to define an interface between the first liquid and the second liquid; and voltage applying means for applying a voltage to the first liquid. Further, the first liquid and the second liquid have the same specific gravity and substantially the same refractive index, and minute particles made of a material that does not transmit light are mixed in the first liquid, such that the first liquid has less light transmittance than the second liquid.Type: GrantFiled: August 17, 2009Date of Patent: November 22, 2011Assignee: Sony CorporationInventor: Keita Tanaka
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Patent number: 8058739Abstract: In an electric power generating apparatus for dispersed power supply using a permanent magnet type electric power generator having many kinds of windings in order to obtain the maximum output by force of wind without using PWM converter, there is a problem that gap magnetic flux of the permanent magnet type electric power generator is demagnetized to decrease the internal induced voltage because alternating current output of the permanent magnet type electric power generator is lagging current.Type: GrantFiled: September 15, 2006Date of Patent: November 15, 2011Assignee: Toyo Electric Mfg. Co., Ltd.Inventors: Takashi Shiota, Keita Tanaka, Tsutomu Isaka
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Publication number: 20110217654Abstract: The invention pertains to a compound generating an acid of the formula I or II, for instance corresponding sulfonium and iodonium salts, as well as corresponding sulfonyloximes wherein X is CH2 or CO; Y is O, NR4, S, O(CO), O(CO)O, O(CO)NR4, OSO2, O(CS), or O(CS)NR4; R1 is for example C1-C18alkyl, C1-C10haloalkyl, C2-C12alkenyl, C4-C30cycloalkenyl, phenyl-C1-C3-alkyl, C3-C30cycloalkyl, C3-C30cycloalkyl-C1-C18alkyl, interrupted C2-C18alkyl, interrupted C3-C30cycloalkyl, interrupted C3-C30cycloalkyl-C1-C18alkyl, interrupted C4-C30cycloalkenyl, phenyl, naphthyl, anthracyl, phenanthryl, biphenylyl, fluorenyl or heteroaryl, all unsubstituted or are substituted; or R1 is NR12R13; R2 and R3 are for example C3-C30cycloalkylene, C3-C30cycloalkyl-C1-C18alkylene, C1-C18alkylene, C1-C10haloalkylene, C2-C12alkenylene, C4-C30cycloalkenylene, phenylene, naphthylene, anthracylene, phenanthrylene, biphenylene or heteroarylene; all unsubstituted or substituted; R4 is for example C3-C30cycloalkyl, C3-C30cycloalkyl-C1-C18alType: ApplicationFiled: February 16, 2011Publication date: September 8, 2011Applicant: BASF SEInventors: Hitoshi Yamato, Toshikage Asakura, Akira Matsumoto, Keita Tanaka, Yuichi Nishimae
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Patent number: 7944618Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber, a polar or conductive first liquid filled in the holding chamber, a second liquid filled in the holding chamber and not mixing with the first liquid, first and second electrodes for applying an electric field to the first liquid, and voltage application means for applying voltage between the first electrode and the second electrode.Type: GrantFiled: January 25, 2010Date of Patent: May 17, 2011Assignee: Sony CorporationInventors: Tadahiro Ohishi, Keita Tanaka, Masaki Ando, Kazuhiro Tanaka
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Patent number: 7935239Abstract: A liquid moving apparatus is disclosed. The liquid moving apparatus may include a container having a holding chamber enclosed by first and second end walls facing against each other and side walls connecting the first and second end walls, a polarized or conductive first liquid filled in the holding chamber, a second liquid filled in the holding chamber and prevented from mixing with the first liquid, first and second electrodes for applying an electric field to the first liquid, and voltage application means for applying voltage between the first electrode and the second electrode.Type: GrantFiled: January 31, 2007Date of Patent: May 3, 2011Assignee: Sony CorporationInventors: Tadahiro Ohishi, Keita Tanaka, Masaki Ando, Kazuhiro Tanaka
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Publication number: 20110094545Abstract: An object of this invention is to provide a cleaner composition that has a desirable cleaning property and is easily separable from pre-rinsing water even when cleaning an object produced by using a lead-free soldering flux; and a lead-free soldering flux removal system using a pre-rinsing method that can reduce the amount of waste fluid. The invention uses a cleaner composition for lead-free soldering flux, comprising (A) specific glycol ethers; (B) a specific polyoxyalkylene amine; and (C) a chelating agent that is at least one member selected from the group consisting of (c1) aliphatic hydroxycarboxylic acid chelating agents and (c2) (poly)phosphoric acid chelating agents.Type: ApplicationFiled: August 17, 2009Publication date: April 28, 2011Applicant: Arakawa Chemical Industries, Ltd.Inventors: Keita Tanaka, Takashi Tanaka
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Publication number: 20110009607Abstract: The present invention provides a method for preparing a DNA fragment, in which a desired double-stranded DNA fragment having a sticky end is directly and easily obtained from an amplification product (an amplified fragment) after PCR without a restriction enzyme digestion. The method for preparing a DNA fragment having a sticky end of the present invention comprises: (i) a step of performing a PCR reaction using a template DNA and specific primers to obtain an amplified DNA fragment; and (ii) a step of performing a prescribed treatment on the amplified DNA fragment to dissociate a protecting group from the fragment.Type: ApplicationFiled: March 10, 2009Publication date: January 13, 2011Inventors: Makoto Komiyama, Akinori Kuzuya, Keita Tanaka
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Patent number: 7854302Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.Type: GrantFiled: December 29, 2008Date of Patent: December 21, 2010Assignee: Shimano, Inc.Inventors: Seiji Fukui, Keiji Matsueda, Keita Tanaka
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Publication number: 20100134861Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber, a polar or conductive first liquid filled in the holding chamber, a second liquid filled in the holding chamber and not mixing with the first liquid, first and second electrodes for applying an electric field to the first liquid, and voltage application means for applying voltage between the first electrode and the second electrode.Type: ApplicationFiled: January 25, 2010Publication date: June 3, 2010Applicant: SONY CORPORATIONInventors: Tadahiro Ohishi, Keita Tanaka, Masaki Ando, Kazuhiro Tanaka
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Patent number: 7701644Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber, a polar or conductive first liquid filled in the holding chamber, a second liquid filled in the holding chamber and not mixing with the first liquid, first and second electrodes for applying an electric field to the first liquid, and voltage application means for applying voltage between the first electrode and the second electrode.Type: GrantFiled: January 28, 2009Date of Patent: April 20, 2010Assignee: Sony CorporationInventors: Tadahiro Ohishi, Keita Tanaka, Masaki Ando, Kazuhiro Tanaka
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Patent number: 7697213Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber, a polar or conductive first liquid filled in the holding chamber, a second liquid filled in the holding chamber and not mixing with the first liquid, first and second electrodes for applying an electric field to the first liquid, and voltage application means for applying voltage between the first electrode and the second electrode.Type: GrantFiled: March 21, 2007Date of Patent: April 13, 2010Assignee: Sony CorporationInventors: Tadahiro Ohishi, Keita Tanaka, Masaki Ando, Kazuhiro Tanaka
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Patent number: 7646545Abstract: An optical element includes an airtight container having opposing face walls in a thickness direction, and side walls connecting the end face walls; a first liquid sealed in the container and having polarity or conductivity; a second liquid sealed in the container and not mixed with the first liquid so as to define an interface between the first liquid and the second liquid; and voltage applying means for applying a voltage to the first liquid. Further, the first liquid and the second liquid have the same specific gravity and substantially the same refractive index, and minute particles made of a material that does not transmit light are mixed in the first liquid, such that the first liquid has less light transmittance than the second liquid.Type: GrantFiled: August 24, 2006Date of Patent: January 12, 2010Assignee: Sony CorporationInventor: Keita Tanaka
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Publication number: 20090310205Abstract: An optical element includes an airtight container having opposing face walls in a thickness direction, and side walls connecting the end face walls; a first liquid sealed in the container and having polarity or conductivity; a second liquid sealed in the container and not mixed with the first liquid so as to define an interface between the first liquid and the second liquid; and voltage applying means for applying a voltage to the first liquid. Further, the first liquid and the second liquid have the same specific gravity and substantially the same refractive index, and minute particles made of a material that does not transmit light are mixed in the first liquid, such that the first liquid has less light transmittance than the second liquid.Type: ApplicationFiled: August 17, 2009Publication date: December 17, 2009Applicant: Sony CorporationInventor: Keita Tanaka
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Patent number: 7604406Abstract: A plurality of elements can be analyzed simultaneously with high sensitivity using a microchip. The microchip (1) comprises a substrate (30), a channel (23) formed in the substrate (30), and an analyzing part (10) consisting of a part of flat surface of the substrate (30), where the outlet of the channel (23) is formed as an opening (9c) and measurement object liquid overflowed from the opening (9c) stays on the flat surface of the substrate (30) to become a sample of analysis. The measurement object liquid is made to overflow as a sample of analysis to the analyzing part (10) using the microchip (1) and then the sample of analysis is preferably dried before a primary X-ray is made to enter under conditions of total reflection and fluorescent X-rays are detected.Type: GrantFiled: August 30, 2006Date of Patent: October 20, 2009Assignee: Japan Science and Technology AgencyInventors: Kouichi Tsuji, Takehiko Kitamori, Manabu Tokeshi, Keita Tanaka, Kazuhiko Nakano
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Publication number: 20090243294Abstract: In an electric power generating apparatus for dispersed power supply using a permanent magnet type electric power generator having many kinds of windings in order to obtain the maximum output by force of wind without using PWM converter, there is a problem that gap magnetic flux of the permanent magnet type electric power generator is demagnetized to decrease the internal induced voltage because alternating current output of the permanent magnet type electric power generator is lagging current.Type: ApplicationFiled: September 15, 2006Publication date: October 1, 2009Applicant: Toyo Electric Mfg. Co., Ltd.Inventors: Takashi Shiota, Keita Tanaka, Tsutomu Isaka
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Patent number: 7568558Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.Type: GrantFiled: May 10, 2005Date of Patent: August 4, 2009Assignee: Shimano, Inc.Inventors: Seiji Fukui, Keiji Matsueda, Keita Tanaka
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Patent number: 7558000Abstract: An optical device includes: a sealed container having edge walls facing each other in a thickness direction of the container and a side wall connecting both of the edge walls; a first liquid with polarity or electrical conductivity and sealed within the container; a second liquid that is sealed within the container and does not mixed with the first liquid; and a voltage applying unit for applying a voltage across the first liquid. The first and second liquid have equal specific gravity, and transmissivity of the first liquid is lower than the transmissivity of the second liquid. An interface between the first liquid and the second liquid changes shape in response to a voltage applied by the voltage applying unit. The first liquid is formed so as to have equal specific gravity to the second liquid by mixing three or more kinds of liquids each having a different specific gravity.Type: GrantFiled: March 2, 2006Date of Patent: July 7, 2009Assignee: Sony CorporationInventors: Keita Tanaka, Toru Udaka, Yukihiro Sano
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Publication number: 20090147912Abstract: A plurality of elements can be analyzed simultaneously with high sensitivity using a microchip. The microchip (1) comprises a substrate (30), a channel (23) formed in the substrate (30), and an analyzing part (10) consisting of a part of flat surface of the substrate (30), where the outlet of the channel (23) is formed as an opening (9c) and measurement object liquid overflowed from the opening (9c) stays on the flat surface of the substrate (30) to become a sample of analysis. The measurement object liquid is made to overflow as a sample of analysis to the analyzing part (10) using the microchip (1) and then the sample of analysis is preferably dried before a primary X-ray is made to enter under conditions of total reflection and fluorescent X-rays are detected.Type: ApplicationFiled: August 30, 2006Publication date: June 11, 2009Inventors: Kouichi Tsuji, Takehiko Kitamori, Manabu Tokeshi, Keita Tanaka, Kazuhiko Nakano
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Patent number: 7544002Abstract: An optical device includes: a sealed container having edge walls facing each other in a thickness direction of the container and a side wall connecting both of the edge walls; a first liquid with polarity or electrical conductivity and sealed within the container; a second liquid that is sealed within the container and does not mix with the first liquid; and a voltage applying unit for applying a voltage across the first liquid. The first liquid and the second liquid have equal specific gravity, and transmissivity of the first liquid is lower than the transmissivity of the second liquid. An interface between the first liquid and the second liquid changes shape in response to a voltage applied by the voltage applying unit. A light transmission path that passes through the edge walls and extends in a direction of the thickness of the container is formed.Type: GrantFiled: February 23, 2006Date of Patent: June 9, 2009Assignee: Sony CorporationInventor: Keita Tanaka