Patents by Inventor Akira Sakurai

Akira Sakurai 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: 20120074552
    Abstract: In a hybrid integrated circuit device, a circuit board on which an island portion of a lead is fixedly attached and a control board on which a control element and the like are mounted are disposed in an overlapping manner. The circuit board and the control board are integrally encapsulated with an encapsulating resin. A transistor disposed on an upper surface of the circuit board and a control element mounted on an upper surface of the control board are also covered by the encapsulating resin. Thus, a module in which an inverter circuit and a control circuit are integrally encapsulated with resin is provided.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicant: ON Semiconductor Trading, Ltd.
    Inventors: Shigeki Mashimo, Fumio Horiuchi, Kiyoaki Kudo, Akira Sakurai, Yuhki Inagaki
  • Publication number: 20120051214
    Abstract: A packet transmission system includes a plurality of nodes connected by a packet transmission path. A current-use packet transmission path is used as the packet transmission path when a fault does not occur, and a spare packet transmission path is used as the packet transmission path when the fault has occurred.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Inventors: KAZUO TAKAGI, Zhenlong Cui, Masaki Umayabashi, Akira Sakurai
  • Publication number: 20110244813
    Abstract: This communication system is equipped with a plurality of transceiver devices each composed of a transmission device that transmits unit data and a reception device that receives unit data from the transmission device. The transmission devices are connected in series. Each of the transmission devices stores identification information for identifying the device itself. The transmission device accepts unit data from a front stage side. The transmission device generates identification information for identifying one of the transmission devices from information included in the accepted unit data, in accordance with a predetermined generation process. In a case that the generated identification information corresponds to the stored identification information, the transmission device transmits the accepted unit data to the reception device.
    Type: Application
    Filed: November 13, 2009
    Publication date: October 6, 2011
    Inventors: Taiki Kanai, Akira Sakurai, Atsuya Yamashita, Hiroaki Nakajima
  • Patent number: 7959300
    Abstract: A projection image display device including a display plane for displaying an image, a projection mechanism projecting an image on the display plane, and an imaging mechanism arranged on the same side of the display plane as the projection mechanism for imaging the display plane. The imaging mechanism is arranged at a position where a position symmetric with respect to the display plane of the projection mechanism is out of the range of the field angle of the imaging mechanism. By arranging the imaging mechanism at a position where no direct reflecting light of the light source of the projection mechanism comes, it is possible to prevent generation of a hot spot.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichiroh Hirahara, Akira Sakurai
  • Patent number: 7951315
    Abstract: The present invention is to provide a polyvinyl chloride (PVC) fiber for artificial hair. The PVC fiber is manufactured by melt spinning a PVC resin composition with a nozzle, wherein the nozzle has a nozzle hole having a diameter D and a land length L, and a nozzle leading portion having a cone angle, and wherein a ratio of L/D is 1-3, a height of the nozzle leading portion is at least 4 mm, and the cone angle is 20°-90°. The resulting PVC fiber has an arithmetic mean roughness of 0.18-0.38 ?m and a maximum height of 0.5-3.5 ?m along a longitudinal direction, specified by JIS B 0601.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: May 31, 2011
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Sakurai, Akira Moroi
  • Publication number: 20110050258
    Abstract: The present invention has the object of simplifying apparatus configuration and avoiding a requirement for calibration. The present invention achieves the above object by forming a detection sheet element that retains in a predetermined array pitch a plurality of conductive detection lines that are lead lines formed by etching or the like on a non-conductive thin film that can be exposed in a space environment. A detection circuit connected to each detection line of the detection sheet element is provided. When an object flying in space collides with the detection sheet body, since a detection line on the detection sheet element is ruptured, constant monitoring of the conductivity of the detection line by the detection circuit enables detection of the object flying in space that has collided with the detection sheet element when a detection line is ruptured.
    Type: Application
    Filed: January 16, 2009
    Publication date: March 3, 2011
    Applicants: IHI CORPORATION, INSTITUTE FOR Q-SHU PIONEERS OF SPACE, INC.
    Inventors: Yukihito Katazawa, Akira Sakurai
  • Publication number: 20100233390
    Abstract: To provide a fiber made of a vinyl chloride resin which is excellent in heat resistance and thus hardly shrinks thermally even at a temperature exceeding 100° C. The fiber obtained by melt-spinning a resin composition comprising a vinyl chloride resin and from 1 to 300 parts by mass of a polyester resin based on 100 parts by mass of the vinyl chloride resin, wherein the vinyl chloride resin has a viscosity average polymerization degree of from 600 to 2,500; the polyester resin is a polylactic acid type resin; and the polyester resin has the melting point of from 100 to 300° C.
    Type: Application
    Filed: February 22, 2007
    Publication date: September 16, 2010
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Akira Sakurai, Yukihisa Hoshino
  • Patent number: 7740049
    Abstract: A method of manufacturing a cylinder block using a die apparatus wherein a columnar hole includes a bore in the cylinder block. The method includes the steps of abutting first and second split cores against an upper surface of a distal end core, the upper surface being located opposite the inner core, and introducing a molten metal into a cavity. An inner core is withdrawn to move the first and second split cores toward an axis. The first and second split cores are released from a formed product made of solidified molten metal. The split cores are removed from the formed product to form the bore, and an inner surface of the bore is cut.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: June 22, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Akira Sakurai, Hajime Miyasaka, Yoshimichi Asai, Hiroyuki Ohashi, Kazumi Nagao
  • Patent number: 7629048
    Abstract: Polyvinyl chloride fibers obtainable by molding a resin composition containing 100 parts by weight of a vinyl chloride resin, from 3 to 20 parts by weight of a compatible chlorinated vinyl chloride resin, from 10 to 30 parts by weight of a heat resistant chlorinated vinyl chloride resin, and from 0.1 to 10 parts by weight of a heat stabilizer into a fibrous form, the compatible chlorinated vinyl chloride resin having a chlorine content of from 57 to 64% by weight and an average degree of polymerization of from 450 to 800; and the heat resistant chlorinated vinyl chloride resin having a chlorine content of from 65 to 71% by weight and an average degree of polymerization of from 450 to 1,100, to a process of producing the same and to applications thereof.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: December 8, 2009
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Sakurai, Masamichi Kanaoka, Akira Moroi
  • Patent number: 7590159
    Abstract: A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 ?m or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5-50 nm.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: September 15, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoto Jikutani, Shunichi Sato, Takashi Takahashi, Akihiro Itoh, Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki, Ken Kanai, Atsuyuki Watada, Koei Suzuki, Satoru Sugawara, Shinji Satoh, Shuuichi Hikichi
  • Publication number: 20090225660
    Abstract: A communication device includes a communication section for receiving or transmitting an Operation Administration and Maintenance (OAM) frame from or to a Layer-2 network; and a controller for providing a destination Media Access Control (MAC) address to the OAM frame when the OAM frame is transmitted in the Layer-2 network, wherein the destination MAC address is associated with an Internet Protocol (IP) multicast address.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Inventor: AKIRA SAKURAI
  • Publication number: 20090207383
    Abstract: There is provided a projected image display unit characterized by a display surface configured to display an image; projection means for projecting the image onto the display surface; and image capturing means for performing image capturing on the display surface, the image capturing means being placed on the same side of the display surface as the projection means, wherein the image capturing means is placed at a position so that the symmetrical position of the projection means with respect to the display surface is out of the range of the angle of view of the image capturing means.
    Type: Application
    Filed: June 29, 2006
    Publication date: August 20, 2009
    Inventors: Keiichiroh Hirahara, Akira Sakurai
  • Publication number: 20090115093
    Abstract: The present invention is to provide a polyvinyl chloride (PVC) fiber for artificial hair. The PVC fiber is manufactured by melt spinning a PVC resin composition with a nozzle, wherein the nozzle has a nozzle hole having a diameter D and a land length L, and a nozzle leading portion having a cone angle, and wherein a ratio of L/D is 1-3, a height of the nozzle leading portion is at least 4 mm, and the cone angle is 20°-90°. The resulting PVC fiber has an arithmetic mean roughness of 0.18-0.38 ?m and a maximum height of 0.5-3.5 ?m along a longitudinal direction, specified by JIS B 0601.
    Type: Application
    Filed: December 29, 2008
    Publication date: May 7, 2009
    Applicant: Denki Kagaku Kabushiki Kaisha
    Inventors: Akira Sakurai, Akira Moroi
  • Publication number: 20090015553
    Abstract: A disclosed image displaying apparatus comprises: a photographing unit configured to photograph an image on a screen; a projection image generating unit generating the image to be projected on the screen; an image extracting unit extracting identification information from the image photographed by the photographing unit, the identification information concerning object or figure information; an object recognizing unit recognizing attribute information from the identification information concerning the object information extracted by the image extracting unit; a figure recognizing unit recognizing characteristic information from the identification information concerning the figure information extracted by the image extracting unit; and an operation processing unit operating the projection image generating unit based on the attribute information and characteristic information.
    Type: Application
    Filed: May 31, 2006
    Publication date: January 15, 2009
    Inventors: Keiichiroh Hirahara, Akira Sakurai
  • Publication number: 20080274289
    Abstract: A mold device and a method of manufacturing a cylinder block. The mold device comprises a split core having two first split cores formed so that the tip parts thereof may be in a tapering shape, two second split cores installed between the first spilt cores, and an inner core is installed at the center part and pushing out the first split cores in the direction receding from the center axis thereof. When the inner core is pushed out to push out and position the first spilt cores, both end parts of the second split cores are brought into contact with the tip parts of the adjacent first split cores, and the outer side-faces of the first split cores and the outer side-faces of the second split cores form a cylindrical shape. When the inner core is raised, the first split cores and the second split cores are pulled to the axial center by first engagement pieces and second engagement pieces.
    Type: Application
    Filed: April 25, 2005
    Publication date: November 6, 2008
    Inventors: Akira Sakurai, Hajime Miyasaka, Yoshimichi Asai, Hiroyuki Ohashi, Kazumi Nagao
  • Publication number: 20080210250
    Abstract: To provide fibers for artificial hair prepared under a low nozzle pressure with little gumming, and a fiber bundle for artificial hair having a soft touch close to human hair, while maintaining uniform curling. A fiber bundle for artificial hair comprising fibers (A) having a flexural rigidity of (1.2 to 3.5)×10?2 N·cm2 as determined by the KES method and fibers (B) having a flexural rigidity of (0.5 to 1.0)×10?2 N·cm2 as determined by the KES method, wherein both of the fibers (A) and the fibers (B) are made of vinyl chloride fibers. The fiber bundle for artificial hair, wherein the content of the fibers (A) is from 30 to 90 mass %, the sectional shape of the fibers (A) is at least one selected from the group consisting of Y-, U- and C-shapes, and the sectional shape of the fibers (B) is a spectacled sectional shape.
    Type: Application
    Filed: June 16, 2006
    Publication date: September 4, 2008
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Atsushi Horihata, Akira Sakurai, Yoshiyuki Yoshino, Takafumi Kono
  • Publication number: 20080043796
    Abstract: A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 ?m or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5-50 nm.
    Type: Application
    Filed: June 7, 2007
    Publication date: February 21, 2008
    Inventors: Naoto JIKUTANI, Shunichi Sato, Takashi Takahashi, Akihiro Itoh, Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki, Ken Kanai, Atsuyuki Watada, Koei Suzuki, Satoru Sugawara, Shinji Satoh, Shuuichi Hikichi
  • Publication number: 20070280108
    Abstract: A system measures delivery quality of data packets transmitting from a communication device to at least one communication terminal through a multicast network. The system includes a communication section for periodically transmitting a first packet to a communication terminal and receiving a second packet in response to the first packet from the communication terminal. The second packet includes delivery quality information. The system further includes a measuring section for measuring the delivery quality of data packets based on the delivery quality information.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 6, 2007
    Applicant: NEC CORPORATION
    Inventor: Akira Sakurai
  • Patent number: 7245647
    Abstract: A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 ?m or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5–50 nm.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: July 17, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoto Jikutani, Shunichi Sato, Takashi Takahashi, Akihiro Itoh, Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki, Ken Kanai, Atsuyuki Watada, Koei Suzuki, Satoru Sugawara, Shinji Satoh, Shuuichi Hikichi
  • Publication number: 20070077424
    Abstract: The present invention is to provide a polyvinyl chloride (PVC) fiber for artificial hair. The PVC fiber is manufactured by melt spinning a PVC resin composition with a nozzle, wherein the nozzle has a nozzle hole having a diameter D and a land length L, and a nozzle leading portion having a cone angle, and wherein a ratio of L/D is 1-3, a height of the nozzle leading portion is at least 4 mm, and the cone angle is 20°-90°. The resulting PVC fiber has an arithmetic mean roughness of 0.18-0.38 ?m and a maximum height of 0.5-3.5 ?m along a longitudinal direction, specified by JIS B 0601.
    Type: Application
    Filed: September 29, 2004
    Publication date: April 5, 2007
    Inventors: Akira Sakurai, Akira Moroi