Patents by Inventor Takashi Ito

Takashi Ito 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).

  • Publication number: 20160330022
    Abstract: A cryptographic system (10) uses a cryptographic scheme capable of decrypting ciphertext on which one of two pieces of information corresponding to each other is set, with a decryption key on which the other piece of information is set. A key generation apparatus (401) generates a user private key on which one of key information u and key information y corresponding to each other is set, and a re-encryption key to convert ciphertext which can be decrypted with an attribute private key on which one of user attribute information x and user attribute information v corresponding to each other is set, into a re-ciphertext on which the other of the key information u and the key information y is set. A ciphertext storage apparatus (201) stores ciphertext on which the other of the user attribute information x and the user attribute information v is set. A re-encryption apparatus (301) re-encrypts the ciphertext stored in the ciphertext storage apparatus with the re-encryption key to generate the re-ciphertext.
    Type: Application
    Filed: January 16, 2014
    Publication date: November 10, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi ITO, Sachihiro ICHIKAWA, Takumi MORI, Yutaka KAWAI, Katsuyuki TAKASHIMA
  • Patent number: 9476006
    Abstract: A method for producing a highly aromatic base oil of the present invention includes a step of hydrorefining a clarified oil to obtain a highly aromatic base oil having an aromatic content of 50% by mass or more determined by a column chromatography analysis method. The step of hydrorefining a clarified oil is preferably performed under conditions of a hydrogen pressure of 5.0 to 20.0 MPa, a temperature of 280 to 400° C., a hydrogen oil ratio of 300 to 750 NL/L, and a space velocity of 0.3 to 2.0 h?1. According to the present invention, a highly aromatic base oil used for rubber processing, asphalt reclamation and the like, and a novel method for producing a highly aromatic base oil can be provided.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: October 25, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Yoshiyuki Morishima, Takashi Ito
  • Publication number: 20160279953
    Abstract: A liquid cartridge includes a liquid container, a target member disposed within a liquid chamber defined in the liquid container, an actuator movable between a restriction position and a non-restriction position, a first magnetic body provided on the target member and a second magnetic body provided on the actuator. The target member is movable between a detection position and a standby position, an arrival of the target member at the detection position being detectable from outside of the liquid container. The target member is movable from the standby position to the detection position in response to movement of the actuator from the restriction position to the non-restriction position, and is movable from the detection position to the standby position in response to movement of the actuator from the non-restriction position to the restriction position.
    Type: Application
    Filed: January 29, 2016
    Publication date: September 29, 2016
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Mikio HIRANO, Takashi ITO
  • Patent number: 9451708
    Abstract: A vacuum thermally bonding apparatus is provided, in which while air is being prevented in vacuum from entering a bonding layer, an element is thermally bonded to a substrate under vacuum by forming the bonding layer having a good thickness under an appropriate pressing pressure, while suppressing runout of the adhesive as much as possible, with a pressing force being slightly adjustable. A lower end portion of an upper frame member is gas-tightly slidably sealed to a peripheral portion of the lower plate member to form a vacuum partition wall therein, and a pressurizing release film is contacted with an upper face of the element, and thermally softened in the atmospheric pressure.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: September 20, 2016
    Assignee: MIKADO TECHNOS CO., LTD.
    Inventors: Takashi Ito, Hiroki Sato
  • Patent number: 9441676
    Abstract: A bearing assembly includes an IC tag with information to be reliably exchanged between the IC tag and an external reader/writer, and a rolling bearing including outer and inner races and rolling elements disposed between the outer and inner races. The IC tag communicates with the external reader/writer device without contacting the reader/writer device, is attached to a metal member of the rolling bearing, includes a tag antenna, and is configured so information can be exchanged between the tag antenna and a reader/writer antenna of the reader/writer device by forming a closed magnetic circuit between the tag antenna and the reader/writer antenna. The IC tag is received in a hole in a metal member surface. The tag antenna includes at least two protrusions facing the opening of the hole and arranged so magnetic fluxes leaving/entering the protrusions pass inside the edge defining the hole opening and extend outside the hole.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 13, 2016
    Assignees: NTN CORPORATION, KRD CORPORATION
    Inventors: Takashi Ito, Naota Yamamoto, Tsukasa Yamakawa, Hirohide Komatsu, Tsutomu Sawa
  • Publication number: 20160245856
    Abstract: With regard to a top loaded monopole antenna consisting of a disk 5 and a metal post 6, a partial discharge sensor includes a short-circuit conductor 10 joining the metal post 6 to a covering 7 and a coaxial line composed of a hole 8 and a metal terminal 9. This makes it possible to implement a partial discharge sensor that can suppress the induction of high voltage in the disk 5 and can achieve high sensitivity in a frequency band of a partial discharge to be detected.
    Type: Application
    Filed: October 1, 2013
    Publication date: August 25, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi YANAGI, Toru FUKASAWA, Satoru YOSHIDA, Takashi ITO
  • Publication number: 20160241100
    Abstract: In a three-phase AC motor, when 2P represents the number of poles of a rotor and N represents the number of slots for inserting windings of a stator therethrough, the division of N by P is not an integer. When X represents the quotient of the division of N by 2P, the stator includes a first annular winding portion made of one coil wound by wave winding at a slot pitch of X or X+1 through the slots, a second annular winding portion wound in the same slot pitch as the first annular winding portion in such a position as not to completely overlap the first annular winding portion, and a plurality of third winding portions each made of the winding wound around the two slots. The first and second annular winding portions and the plurality of third winding portions are connected in series on a phase-by-phase basis.
    Type: Application
    Filed: February 17, 2016
    Publication date: August 18, 2016
    Applicant: FANUC CORPORATION
    Inventor: Takashi Ito
  • Patent number: 9418238
    Abstract: A searchable encryption resistant to frequency analysis. A conversion rule management device generates a conversion rule table associating a search keyword with a conversion keyword group. Based on the conversion rule table, a data registration device generates registration data associating encrypted data with an encrypted keyword, and registers the registration data in a server device. An information processing device obtains from the conversion rule table a conversion keyword group associated with a specified search keyword, generates an encrypted keyword group, and requests a data search by specifying the encrypted keyword group. Using as a search key an encrypted keyword included in the encrypted keyword group, the server device searches for encrypted data associated with the search key, and returns searched encrypted data. The information processing device decrypts the searched encrypted data, and outputs as a search result search data obtained by decryption.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: August 16, 2016
    Assignees: Mitsubishi Electric Corporation, The University of Electro-Communications
    Inventors: Takashi Ito, Mitsuhiro Hattori, Nori Matsuda, Kazuo Ota, Yusuke Sakai
  • Publication number: 20160227823
    Abstract: The method for producing kaki-age includes the steps of: coating an ingredient with a crust material such that the proportion of the crust material, in terms of solid content, is within a range from 30 to 50 parts by mass per 100 parts by mass of the ingredient; and subjecting the crust-material-coated ingredient to a heating treatment including deep-frying such that the moisture content of the final product is 10 mass % or less. The oil temperature in deep-frying is preferably from 135° C. to 155° C. inclusive. The heating treatment may include a hot-air drying treatment, and in that case, it is preferable to dry the deep-fried ingredients (kaki-age) with hot-air at a temperature within a range above 120° C. and equal to or below 160° C.
    Type: Application
    Filed: August 11, 2014
    Publication date: August 11, 2016
    Inventors: Takashi ITO, Kazuko KOJIMA, Takashi SESAI, Kentaro IRIE, Tatsunori NISHIDE
  • Publication number: 20160225565
    Abstract: A fixed core includes: a fixed core tapered portion having a diameter increased in an attraction direction; and a fixed core circular portion having a fixed outer diameter and extending in the attraction direction from an end of the fixed core tapered portion. A movable core includes a movable core tubular portion in which a movable core hole is defined. The movable core hole is a space into which the fixed core tapered portion and the fixed core circular portion can enter. The movable core tubular portion includes: a movable core cylindrical portion having a constant inner diameter; and a movable core tapered tubular portion having an inner diameter decreased from an end of the movable core cylindrical portion in a non-attraction direction.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Inventors: Masanao SUGISAWA, Takashi ITO, Makoto KAMIYA, Mitsugu FUJIWARA, Tomoaki TANAKA
  • Patent number: 9407217
    Abstract: When a switch is set to off, and a switch is set to on, the voltage of a SigOut terminal is stabilized with a reference voltage, and a bias voltage is applied to a capacitor. Changing the switch from on to off, with the bias voltage retained in the capacitor, a detection signal which is input via a SigIn terminal is amplified with the reference voltage as a reference, and an amplified signal is output from the SigOut terminal.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: August 2, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miki Kagano, Kazuya Makabe, Tomokazu Ogomi, Takahito Nakanishi, Tadashi Minobe, Takashi Ito
  • Publication number: 20160218580
    Abstract: In a three-phase AC electric motor, in each slot, any or some of the windings of six phases in total, including three phases of U, V, and W phases and opposite phases thereof, are arranged in three layers per slot. As the windings in first layers, of the three-layer windings, U, V, and W-phase windings are arranged so as to have rotational symmetry with one another at a mechanical angle of ±120 degrees. The windings in second layers have the same arrangement as in the first layers shifted by L slots, and the windings in third layers have the same arrangement as in the first layers shifted by L slots in a direction opposite to the arrangement of the windings in the second layers.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 28, 2016
    Inventor: Takashi Ito
  • Patent number: 9391965
    Abstract: A data search server stores a system ciphertext including a data ciphertext and a keyword ciphertext in each category-specific DB unit for each data category, and stores each category-determination secret key being associated with each category-specific DB unit. A search request receiving unit receives from a data search terminal a search request including a search trapdoor and an index tag. A data searching unit searches for a category-determination secret key with which the index tag is decrypted to the same value as a key-determination value. Using the search trapdoor, the data searching unit performs a search of a Public-key Encryption with Keyword Search scheme on system ciphertexts in a category-specific DB unit associated with this category-determination secret key. A search result transmitting unit transmits to the data search terminal a data ciphertext included in a system ciphertext which has been found as a hit in the search.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: July 12, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuhiro Hattori, Nori Matsuda, Takashi Ito, Takumi Mori, Takato Hirano
  • Patent number: 9383402
    Abstract: A partial discharge sensor is configured to have a metal casing 7 disposed outside flange 2a and 2b and a bowtie antenna 8 disposed inside the metal casing 7 in a direction orthogonal to a circumferential direction of the flanges 2a and 2b to thus receive a signal caused by a partial discharge over a wide band with high sensitivity.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 5, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toru Fukasawa, Takashi Ito, Hiroaki Miyashita
  • Publication number: 20160145254
    Abstract: The present invention provides a triazolopyridine compound having a prolyl hydroxylase inhibitory action and an erythropoietin production-inducing ability. The present invention relates to a compound represented by the following formula [I]: wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof, as well as a prolyl hydroxylase inhibitor or erythropoietin production-inducing agent containing the compound. The compound of the present invention shows a prolyl hydroxylase inhibitory action and an erythropoietin production-inducing ability and is useful as a prophylactic or therapeutic agent for various diseases and pathologies (disorders) caused by decreased production of erythropoietin.
    Type: Application
    Filed: June 25, 2015
    Publication date: May 26, 2016
    Inventors: Ikuo Mitani, Yosuke Ogoshi, Takuya Matsui, Masahiro Yokota, Masakazu Terashita, Dai Motoda, Kazuhito Ueyama, Hiroyuki Abe, Takahiro Hotta, Takashi Ito
  • Patent number: 9329100
    Abstract: A lifetime estimation device to estimate a lifetime of a rolling bearing assembly comprising inner and outer rings includes a buildup height estimation unit to estimate in accordance with a predetermined rule a buildup height of the indentation based on the inputted depth of the indentation or the inputted indentation size; and a lifetime estimation unit to estimate the lifetime of the rolling bearing assembly, the lifetime estimation unit being configured to determine a preliminary estimate of the lifetime of the rolling bearing assembly based on a dynamic equivalent load, determine a rate of reduction in a rolling fatigue life based on the buildup height of the indentation, and apply the determined rate of reduction in a rolling fatigue life to the preliminary estimate of the lifetime of the rolling bearing assembly to determine an estimate of the lifetime of the rolling bearing assembly.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: May 3, 2016
    Assignee: NTN CORPORATION
    Inventors: Takashi Ito, Takumi Fujita
  • Publication number: 20160059344
    Abstract: According to one embodiment, a device includes a tool and a magnet. The tool softens and causes a welding object member to produce plastically flow, applying a pressure and rotating. The tool includes a shank, a shoulder, a probe, at least one heater, and a heat-insulating layer. The shank includes an attaching portion, a middle portion, and a tip end portion. A heat-insulating layer is provided in the tip end portion. The magnet is disposed outside the middle portion, faces the middle portion. The middle portion includes an iron core portion having a plurality of protrusions and at least one coil including a conductor, and the protrusions are wound by the coil. The both ends of the coil are connected to the heater. A magnetic permeability of the iron core of the middle portion is higher than magnetic permeabilities of the tip end portion and the attaching portion.
    Type: Application
    Filed: June 30, 2015
    Publication date: March 3, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takashi ITO, Taizo TOMIOKA
  • Patent number: 9276746
    Abstract: In a wildcard-applicable anonymous hierarchical identity-based encryption system, it is aimed to make the number of pairing operations a fixed number. A user identifier ID and a pattern P are used. The user identifier ID includes k number of hierarchy identifiers. The pattern P includes either of a hierarchy identifier, a wildcard value and a blank value for each hierarchy. An encryption device 400 extracts a key value H corresponding to a hierarchy of the wildcard value and a key value H corresponding to a hierarchy of a pattern value from a public key PK, calculates a cipher value C1 and a cipher value C3, and outputs ciphertext data CT including plaintext cipher value C0, the cipher value C1, and the cipher value C3.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: March 1, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuhiro Hattori, Takato Hirano, Takumi Mori, Takashi Ito, Nori Matsuda, Tsutomu Sakagami
  • Publication number: 20160056861
    Abstract: In a communication terminal, a power receiving circuit is connected to a transmission cable having two wires through junctions, and configured to receive electric power supplied from the transmission cable. A transmission circuit is connected between the junctions, and configured to transmit a current-mode signal on the transmission cable by short-circuiting therebetween. An intermediate circuit includes a series circuit of an inductor and a capacitor, and is connected in parallel with the transmission circuit between the junctions and also exists between the junctions and the power receiving circuit. The power receiving circuit is connected between both ends of the capacitor.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 25, 2016
    Inventors: Kazuhiko GOSHONOO, Takashi ITO
  • Patent number: 9255802
    Abstract: A resonator element includes a base portion, and a vibrating arm which extends from the base portion and on which a weight portion is provided, and the weight portion includes a first weight portion which is disposed on one main surface of a distal end portion of the vibrating arm, and a second weight portion which is disposed on the distal end side with respect to the first weight portion and has a thickness smaller than that of the first weight portion. The vibrating arm transmits an energy beam, and a laser incidence area where incidence of the energy beam to the inside of the vibrating arm is allowed, is disposed in a position of the other main surface on the opposite side of the vibrating arm overlapped with the second weight portion.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: February 9, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akinori Yamada, Shuhei Yoshida, Takashi Ito, Keiji Nakagawa