Patents by Inventor Takuya Maeda

Takuya Maeda 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).

  • Patent number: 9201144
    Abstract: Transmitter elements to transmit a detection ray for object detection, to a transmission area, receiver elements to receive, from a reception area, the detection ray reflected by an object, and a transmission-side optical divider and a reception-side optical divider, disposed in front of the transmitter elements and the receiver elements, respectively, which includes optical dividing pieces having optical deflection surfaces on which a traveling direction angle of the detection ray is varied to angles so as to correspond to division areas, are provided. In the optical dividers, a ratio of an area of a second optical deflection surface that forms a division area that is closer to the sensor, relative to an area of a first optical deflection surface that forms a division area that is farther from the sensor, is set so as to be different between a transmission side and a reception side.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: December 1, 2015
    Assignee: OPTEX CO., LTD.
    Inventors: Kenta Shimoji, Takayasu Ikeda, Masayuki Shimazu, Takuya Maeda
  • Publication number: 20150322707
    Abstract: An active object detection sensor is provided which allows an installation worker to easily adjust a detection area, and further identify an optimum position of a guide mark in a touch detection area. The active object detection sensor used for opening/closing of automatic an opening/closing unit (3) includes: an object determination unit (52) that during an operation mode determines that an object is in a detection area (A) when a detection level of a detection beam received by a receiver (22) exceeds an operation threshold to output an object detection signal; and a detection level indication unit (43) that during an adjustment mode indicates the detection level of the detection beam received by the receiver (22).
    Type: Application
    Filed: April 29, 2015
    Publication date: November 12, 2015
    Applicant: OPTEX CO., LTD.
    Inventors: Masayuki SHIMAZU, Takayasu IKEDA, Kenta SHIMOJI, Takuya MAEDA
  • Publication number: 20150222558
    Abstract: A communication method executed by a processor included in a relay device, the communication method includes receiving a target packet among a plurality of segmented packets generated by dividing a transmission packet, the plurality of segmented packets including a same identifier as that of the transmission packet; storing the target packet into a memory, when no error is detected from the target packet; discarding one or more packets stored in the memory and including a same identifier as that of the target packet, when an error is detected from the target packet; generating a discard request including an identifier of the transmission packet, and information requesting to discard a packet including the identifier, when the discarded one or more packets do not include a head packet among the plurality of segmented packets; and transmitting the discard request to a transmission destination to which the head packet is transmitted.
    Type: Application
    Filed: December 19, 2014
    Publication date: August 6, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Takuya MAEDA, Shuichi Muso, NORIKAZU HIKIMOCHI
  • Publication number: 20150160339
    Abstract: Transmitter elements to transmit a detection ray for object detection, to a transmission area, receiver elements to receive, from a reception area, the detection ray reflected by an object, and a transmission-side optical divider and a reception-side optical divider, disposed in front of the transmitter elements and the receiver elements, respectively, which includes optical dividing pieces having optical deflection surfaces on which a traveling direction angle of the detection ray is varied to angles so as to correspond to division areas, are provided. In the optical dividers, a ratio of an area of a second optical deflection surface that forms a division area that is closer to the sensor, relative to an area of a first optical deflection surface that forms a division area that is farther from the sensor, is set so as to be different between a transmission side and a reception side.
    Type: Application
    Filed: November 28, 2014
    Publication date: June 11, 2015
    Applicant: OPTEX CO., LTD.
    Inventors: Kenta SHIMOJI, Takayasu IKEDA, Masayuki SHIMAZU, Takuya MAEDA
  • Publication number: 20150153451
    Abstract: An optical divider is disposed, in front of at least one of the transmitter and receiver elements, therebetween, and at least one of a transmission and reception side, and has a plurality of optical dividing pieces each having an optical deflection surface on which an angle of a detection ray is varied to a plurality of angles for dividing the detection ray toward a plurality of division areas. The optical deflection surface on at least one of the transmission and reception side is set to have a given angle, to assign at least one of the detection ray from the transmitter elements and toward the receiver elements, to a given division area, such that a combination of the transmitter and receiver elements forming one of the division areas is different from a combination of the transmitter and receiver elements forming another one of the division areas.
    Type: Application
    Filed: November 28, 2014
    Publication date: June 4, 2015
    Applicant: OPTEX CO., LTD.
    Inventors: Takayasu IKEDA, Kiyofumi FUKUDA, Kenta SHIMOJI, Masayuki SHIMAZU, Takuya MAEDA
  • Publication number: 20150102700
    Abstract: An electric motor including a rotor including magnetic pole units and a stator including slots facing an outer peripheral surface of the rotor. Each of the magnetic pole units is bulged to an outside in a radial direction so that a waveform of a magnetic flux density generated from the rotor is a sine wave shape, and a concave part or convex part which is small enough to prevent changing of a waveform cycle of cogging torque determined by a least common multiple of the number of slots and the number of magnetic poles of the rotor, is formed at a central part in a circumferential direction of an outer peripheral surface in each of the magnetic pole units.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 16, 2015
    Inventor: Takuya Maeda
  • Publication number: 20150096918
    Abstract: Provided is a clarifying agent composition which is capable of yielding a molded article having excellent transparency whose initial coloration is suppressed. The clarifying agent composition is characterized by comprising 1.0 to 10 parts by mass of a colorant with respect to 100 parts by mass of a clarifying agent represented by the following Formula (1): (wherein, R1 to R4 each independently represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms; R5 represents a hydrogen atom or a methyl group; n represents 1 or 2; and M represents an alkali metal when n is 1, or Al(OH) when n is 2).
    Type: Application
    Filed: May 7, 2013
    Publication date: April 9, 2015
    Applicant: ADEKA CORPORATION
    Inventors: Takuya Maeda, Atsushi Sakai, Naoko Tanji, Naoshi Kawamoto
  • Patent number: 8901785
    Abstract: An electric motor includes a rotor including an iron core and a plurality of windings, and a stator including a plurality of permanent magnets forming a plurality of poles. The iron core has a plurality of primary teeth around each of which a winding is wound and a plurality of secondary teeth around each of which no winding is wound. The primary teeth and the secondary teeth are formed alternately with each other. The electric motor is configured such that a ratio between the number of poles formed by the permanent magnets of the stator and the number of phases formed by the windings of the rotor is 4m:3n (m and n are any natural numbers, excluding the case where m:n=2:3 is satisfied).
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: December 2, 2014
    Assignee: FANUC Corporation
    Inventors: Akira Nishifukumoto, Takuya Maeda, Yoshifumi Shimura
  • Patent number: 8880759
    Abstract: An apparatus includes first, second, and spare ports, where first data having a data length less than a predetermined value is transmitted from the first port and second data having a data length not less than the predetermined value is transmitted from the second port. The apparatus obtains a first determination result indicating whether input data is the first data or the second data and a second determination result indicating whether a transmission rate of each of the first and second ports is equal to or greater than a threshold. The apparatus sorts the input data to one of the first, second, and spare ports, based on the first and second determination results. The apparatus fragments the second data and transmit the fragmented second data to the spare port when both the first data and the second data are sorted to the spare port.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: November 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Takuya Maeda, Tetuya Yokoyama
  • Patent number: 8780701
    Abstract: A communication apparatus includes a high-priority link configured to transmit one or more high-priority packets that have a priority level greater than or equal to a given level; a plurality of low-priority links that are optically coupled to the same transmission destination as the high-priority link and are configured to transmit one or more low-priority packets that have a priority level less than the given level; a first distribution circuit configured to select the one or more high-priority packets from among input packets and distribute the selected one or more high-priority packets to the high-priority link; and a second distribution circuit configured to individually distribute one or more remaining input packets, which are the input packets that have not been distributed to the high-priority link by the first distribution circuit, to the plurality of low-priority links based on distribution information about distributing packets to the plurality of low-priority links.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 15, 2014
    Assignee: Fujitsu Limited
    Inventors: Takuya Maeda, Shigemori Ookawa
  • Patent number: 8736120
    Abstract: An Oldham coupling includes a first coupling part, a second coupling part and an intermediate part. The first coupling part and the second coupling part are coupled to each other with the intermediate part provided therebetween. The first coupling part and the second coupling part are fitted on fitting portions of the intermediate part extending perpendicular to each other. The first coupling part, the second coupling part and the intermediate part have fitting indication portions. The fitting indication portions allow a positional relationship between the first coupling part and the second coupling part about a rotational axis to be determined.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 27, 2014
    Assignee: Fanuc Corporation
    Inventors: Takuya Maeda, Isao Kariya
  • Publication number: 20140103755
    Abstract: An electric motor includes a stator having a core back which varies in width in a circumferential direction, and a rotor provided with permanent magnets. In the electric motor, cogging torque is generated M times during one revolution of the rotor, due to the number of magnetic poles of the rotor and the varied shape of the core back. The core back is provided with a step shift by an angle obtained by multiplying (360/M/2) degrees with an odd number. According to one embodiment, the core back may be provided with holes, concave portions or convex portions, so as to provide the core back with the step shift.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: FANUC CORPORATION
    Inventors: Takuya Maeda, Reo Arai
  • Publication number: 20130257233
    Abstract: An Oldham coupling includes a first coupling part, a second coupling part and an intermediate part. The first coupling part and the second coupling part are coupled to each other with the intermediate part provided therebetween. The first coupling part and the second coupling part are fitted on fitting portions of the intermediate part extending perpendicular to each other. The first coupling part, the second coupling part and the intermediate part have fitting indication portions. The fitting indication portions allow a positional relationship between the first coupling part and the second coupling part about a rotational axis to be determined.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 3, 2013
    Applicant: FANUC CORPORATION
    Inventors: Takuya MAEDA, Isao KARIYA
  • Publication number: 20130262713
    Abstract: An apparatus includes first, second, and spare ports, where first data having a data length less than a predetermined value is transmitted from the first port and second data having a data length not less than the predetermined value is transmitted from the second port. The apparatus obtains a first determination result indicating whether input data is the first data or the second data and a second determination result indicating whether a transmission rate of each of the first and second ports is equal to or greater than a threshold. The apparatus sorts the input data to one of the first, second, and spare ports, based on the first and second determination results. The apparatus fragments the second data and transmit the fragmented second data to the spare port when both the first data and the second data are sorted to the spare port.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 3, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Takuya MAEDA, Tetsuya Yokoyama
  • Patent number: 8481788
    Abstract: The present invention aims to provide a method for producing a polyalkylene oxide, which is capable of improving reduction in reactivity of a double metal cyanide complex catalyst in the case that a low molecular weight initiator is used, and producing the polyalkylene oxide with high productivity at low cost. The method for producing a polyalkylene oxide comprises carrying out a ring-opening addition reaction of an alkylene oxide with an initiator having at least one hydroxy group and having a molecular weight of not more than 300 per hydroxy group in the presence of a double metal cyanide complex catalyst in an organic solvent, wherein the organic solvent is used in an amount of 500 to 1,500 parts by weight relative to 100 parts by weight of the alkylene oxide used at the start of the reaction.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: July 9, 2013
    Assignee: Kaneka Corporation
    Inventors: Hidetoshi Odaka, Takuya Maeda, Kiyotaka Bito, Michihide Homma
  • Publication number: 20130049490
    Abstract: A magnetic plate for a linear motor, a linear motor having the magnetic plate, and a method of manufacturing the magnetic plate, wherein the strength of a portion where the thickness of a resin layer is small is improved, while maintaining desired thrust force of the motor. A woven cloth such as a glass woven cloth or a carbon fiber woven cloth is attached on a surface of a plurality of permanent magnets, wherein N-poles and S-poles of the permanent magnets are alternately positioned. Then, a resin protecting layer is formed on the woven cloth by resin molding.
    Type: Application
    Filed: August 2, 2012
    Publication date: February 28, 2013
    Applicant: FANUC Corporation
    Inventors: Yoshifumi Shimura, Takuya Maeda, Yuusuke Kondou
  • Publication number: 20130049911
    Abstract: A method for producing a magnet plate for a linear motor is provided. The magnet plate comprises a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate. The method comprises providing the plurality of magnets on a surface of the base plate at a certain interval, placing the base plate into a mold, supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding, and magnetizing the plurality of magnets.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 28, 2013
    Applicant: FANUC CORPORATION
    Inventors: Yoshifumi SHIMURA, Takuya Maeda, Yuusuke Kondou
  • Publication number: 20120307628
    Abstract: A communication apparatus includes a high-priority link configured to transmit one or more high-priority packets that have a priority level greater than or equal to a given level; a plurality of low-priority links that are optically coupled to the same transmission destination as the high-priority link and are configured to transmit one or more low-priority packets that have a priority level less than the given level; a first distribution circuit configured to select the one or more high-priority packets from among input packets and distribute the selected one or more high-priority packets to the high-priority link; and a second distribution circuit configured to individually distribute one or more remaining input packets, which are the input packets that have not been distributed to the high-priority link by the first distribution circuit, to the plurality of low-priority links based on distribution information about distributing packets to the plurality of low-priority links.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Takuya Maeda, Shigemori Ookawa
  • Publication number: 20110028682
    Abstract: The present invention aims to provide a method for producing a polyalkylene oxide, which is capable of improving reduction in reactivity of a double metal cyanide complex catalyst in the case that a low molecular weight initiator is used, and producing the polyalkylene oxide with high productivity at low cost. The method for producing a polyalkylene oxide comprises carrying out a ring-opening addition reaction of an alkylene oxide with an initiator having at least one hydroxy group and having a molecular weight of not more than 300 per hydroxy group in the presence of a double metal cyanide complex catalyst in an organic solvent, wherein the organic solvent is used in an amount of 500 to 1,500 parts by weight relative to 100 parts by weight of the alkylene oxide used at the start of the reaction.
    Type: Application
    Filed: January 21, 2009
    Publication date: February 3, 2011
    Applicant: KANEKA CORPORATION
    Inventors: Hidetoshi Odaka, Takuya Maeda, Kiyotaka Bito, Michihide Homma
  • Patent number: 7787364
    Abstract: A control scheme is disclosed for controlling establishment of a standby channel route for an active channel route in a GMPLS network made up of plural transmission apparatuses. The standby channel route is formed by at least one standby channel route transmission apparatus, an ingress transmission apparatus, and an egress transmission apparatus. The control scheme involves transmitting from the ingress transmission apparatus to the standby channel route transmission apparatus a standby channel path establishing message including pre-reserve information for directing the standby channel route transmission apparatus to pre-reserve a standby channel path of the standby channel route, and setting the standby channel path to pre-reserved status within a band management table of the standby channel route transmission apparatus. The standby channel path that is set to pre-reserved status within the standby channel route transmission apparatus is externally recognized as free by the other transmission apparatuses.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: August 31, 2010
    Assignee: Fujitsu Limited
    Inventors: Takuya Maeda, Masaru Tanaka, Masaki Deguchi