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: 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
  • Publication number: 20070009656
    Abstract: A coating system for forming a protective layer includes first through fourth robots which are controlled by a controller and are provided close to a transport line, and sprayer mechanisms provided on ends of arms of the first through fourth robots. The motions of first through fourth robots are taught. Liquid material including an acrylic copolymer is sprayed onto an object such as a vehicle body, and dried to form a peelable protective layer on the object. The liquid material is sprayed from a first through fifth sprayers of the sprayer mechanism after the vehicle body is painted. At this time, the liquid material from the first sprayer is distributed locally in the smallest area. The area where liquid material is sprayed becomes wide gradually, in the order of the third sprayer, the fourth sprayer, the fifth sprayer, and the second sprayer. Such sprayers are also arranged in this order from an edge of the vehicle body.
    Type: Application
    Filed: March 26, 2004
    Publication date: January 11, 2007
    Inventors: Bansei Nagase, Akira Sakurai
  • Publication number: 20060141248
    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: Application
    Filed: April 1, 2004
    Publication date: June 29, 2006
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Akira Sakurai, Masamichi Kanaoka, Akira Moroi
  • Publication number: 20060093010
    Abstract: A surface-emission laser diode includes a distributed Bragg reflector tuned to a wavelength of 1.
    Type: Application
    Filed: September 8, 2005
    Publication date: May 4, 2006
    Inventors: Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki, Ken Kanai, Atsuyuki Watada, Shunichi Sato, Koei Suzuki, Satoru Sugawara, Shinji Satoh, Shuuichi Hikichi, Naoto Jikutani, Takashi Takahashi, Akihiro Itoh
  • Publication number: 20060035018
    Abstract: In forming a thin film of silver mirror on a surface of an object to be coated, a silver mirror reaction-treating solution including three solutions: an ammoniacal silver salt aqueous solution (I), an aqueous solution of caustic soda (IIa) and an aqueous solution of a carbohydrate-based reducing agent (IIb) such as glucose (fructose) are used. Immediately after the caustic soda aqueous solution (IIa) and the reducing agent aqueous solution (IIb) are mixed, the resulting mixed liquid and the ammoniacal silver salt aqueous solution (I) are independently and simultaneously sprayed onto the object. Alternatively, the mixed liquid (II) and the ammoniacal silver salt aqueous solution (I) are mixed together immediately upstream of a spraying nozzle, and the mixed liquid (III) is sprayed onto the object. Thereby, a thin film of silver mirror is formed in a thickness of around 0.01 to 0.03 ?m, for example, through depositing silver by a silver mirror reaction.
    Type: Application
    Filed: October 29, 2003
    Publication date: February 16, 2006
    Applicants: ADVANCE COMPANY, LTD., OHRA SANGYO CO., LTD.
    Inventors: Akira Sakurai, Junichi Togasaki
  • Patent number: 6975663
    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: February 26, 2002
    Date of Patent: December 13, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuro Sekiya, Akira Sakurai, Masayoshi Katoh, Teruyuki Furuta, Kazuya Miyagaki, Ken Kanai, Atsuyuki Watada, Shunichi Sato, Koei Suzuki, Satoru Sugawara, Shinji Satoh, Shuuichi Hikichi, Naoto Jikutani, Takashi Takahashi, Akihiro Itoh
  • Publication number: 20050225993
    Abstract: A plated synthetic resin member for a vehicle has a main body made of a synthetic resin and a plating coat formed on the surface of the main body and having a metallic gloss. The main body is molded from a translucent synthetic resin. The plating coat formed on the surface of the main body is translucent. The main body has a built-in lamp that can light up. Lighting up the lamp at night puts the plating coat in a light-emitting state. Thus, the plated synthetic resin member for a vehicle that can provide a high-class image even at night.
    Type: Application
    Filed: June 9, 2005
    Publication date: October 13, 2005
    Inventors: Akira Yamazaki, Naoki Sakamoto, Hideaki Kosuge, Yasufumi Sugauchi, Junichi Togasaki, Akira Sakurai
  • Patent number: 6875507
    Abstract: A polyvinyl chloride fiber which comprises a composition having 100 parts by weight of a vinyl chloride resin, from 3 to 20 parts by weight of a chlorinated vinyl chloride resin having a chlorine content of from 57.0 to 62.0% and an average polymerization degree of from 550 to 750, and from 5 to 50 parts by weight of a chlorinated vinyl chloride resin having a chlorine content of from 65.0 to 67.0% and an average polymerization degree of from 550 to 750.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: April 5, 2005
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masamichi Kanaoka, Akira Sakurai, Akira Moroi
  • Publication number: 20040234759
    Abstract: A polyvinyl chloride fiber which comprises a composition having 100 parts by weight of a vinyl chloride resin, from 3 to 20 parts by weight of a chlorinated vinyl chloride resin having a chlorine content of from 57.0 to 62.0% and an average polymerization degree of from 550 to 750, and from 5 to 50 parts by weight of a chlorinated vinyl chloride resin having a chlorine content of from 65.0 to 67.0% and an average polymerization degree of from 550 to 750.
    Type: Application
    Filed: July 1, 2004
    Publication date: November 25, 2004
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Masamichi Kanaoka, Akira Sakurai, Akira Moroi
  • Patent number: 6756696
    Abstract: Wind power generator including a wind turbine rotating in a cylindrical wind tunnel body and capable of generating high output power by accelerating a wind flow. The wind tunnel body expands toward a wind flow direction and the wind turbine is arranged adjacent to a wind inlet of the wind tunnel body. An angle of inclination of a side wall portion of the wind tunnel body against an axis of the wind tunnel body is in a range from 5 to 25 degrees. The inlet of the wind tunnel body has a curved surface smoothly expanding toward an outside of the wind tunnel body. A collar-shaped brim is formed on an outside of an opening edge of a wind outlet of the wind tunnel body. Wind flowing into the wind tunnel body sharply accelerates immediately after passing through the inlet and rotates the wind turbine.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: June 29, 2004
    Assignee: Kyusho TLO Company, Limited
    Inventors: Yuji Ohya, Takashi Karasudani, Akira Sakurai, Masahiro Inoue, Nobutaka Fukamachi, Kimihiko Watanabe
  • Publication number: 20040083494
    Abstract: A system for delivering contents to a user, includes (a) a content server which provides a content a user selected, to the user, (b) a user's terminal which transmits an indication of a user's desired content among contents provided by the content server, to the content server, and (c) a network system which assigns a band necessary for transmission of the content to a channel through which the content is transmitted from the content server to the user's terminal, only during the content is being transmitted, receives a content fee from the user, pays the content fee to the content server, and receives a fee for assuring the band and transmitting the content to the user on behalf of the content server, from the content server.
    Type: Application
    Filed: October 16, 2003
    Publication date: April 29, 2004
    Applicant: NEC CORPORATION
    Inventor: Akira Sakurai