Patents by Inventor Hideki Yagi

Hideki Yagi 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: 20100303115
    Abstract: A method for manufacturing an LD is disclosed. The LD has a striped structure including an optical active region. The striped structure is buried with resin, typically benzo-cyclo-butene (BCB). The method to form an opening in the BCB layer has tri-steps etching of the RIE. First step etches the BCB layer partially by a mixed gas of CF4 and O2, where CF4 has a first partial pressure, second step etches the photo-resist patterned on the top of the BCB layer by a mixed gas of CF4 and O2, where CF4 in this step has the second partial pressure less than the first partial pressure, and third step etches the BCB left in the first step by mixed gas of CF4 and O2, where CF4 in this step has the third partial pressure greater than the second partial pressure.
    Type: Application
    Filed: May 24, 2010
    Publication date: December 2, 2010
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hideki Yagi, Kenji Koyama, Hiroyuki Yoshinaga, Kuniaki Ishihara
  • Patent number: 7736926
    Abstract: The invention provides a light-emitting device, where the active region thereof may be escaped from being damaged by the plasma process. The device is first formed with a semiconductor layer on the semiconductor substrate, next provided with an etching mask. Using the mask, the semiconductor layer on the substrate is dry-etched to form a periodic structure with grooves and mesas. The active regions are buried within the grooves by the OMVPE method.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: June 15, 2010
    Assignee: Sumitomo Electric Industries Ltd.
    Inventor: Hideki Yagi
  • Publication number: 20100034229
    Abstract: A semiconductor laser includes a first optical confinement layer, a plurality of first quantum wires and buried semiconductor regions disposed on a first area, a plurality of second quantum wires and buried semiconductor regions disposed on a second area, an active layer disposed on a third area, and a second optical confinement layer. The plurality of first quantum wires and the buried semiconductor regions constitute a first distributed Bragg reflector, and the plurality of second quantum wires and the buried semiconductor regions constitute a second distributed Bragg reflector. The third area is disposed between the first area and the second area. The buried semiconductor regions have a refractive index different from the average refractive index of the first quantum wires and the average refractive index of the second quantum wires. These distributed Bragg reflectors form a DBR laser having a cavity length defined by the length of the active layer.
    Type: Application
    Filed: May 12, 2009
    Publication date: February 11, 2010
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventor: Hideki YAGI
  • Publication number: 20090308937
    Abstract: An IC card includes: a rectifying circuit; a register section in which a plurality of setpoints related to the output voltage of the rectifying circuit are set; a voltage level detecting circuit configured to detect the output voltage level of the rectifying circuit on the basis of the setpoints set in the register section; a plurality of transistors for load modulation to be made valid or invalid according to the output voltage level detected by the voltage level detecting circuit; and a control section configured to generate transmission data according to reception data received by a receiving section and supply the transmission data to the plurality of transistors for load modulation.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 17, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideki Yagi, Akira Mito
  • Patent number: 7597866
    Abstract: The present invention provides a lutetium oxide sinter to which yttrium is added in an amount of 100 mass ppm to 7000 mass ppm, whose average particle size is from 0.7 to 20 ?m, and with which there is no precipitation of a hetero phase containing yttrium at the grain boundary.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: October 6, 2009
    Assignee: Konoshima Chemical Co., Ltd.
    Inventors: Shunsuke Hosokawa, Hideki Yagi, Takagimi Yanagitani
  • Publication number: 20090141764
    Abstract: In the method of making a semiconductor laser, a semiconductor region is grown on an active layer, and a part of the semiconductor region is etched to form a ridge structure. An insulating film is formed over the ridge structure, and a resin layer of photosensitive material is formed to bury the ridge structure. A cured resin portion and an uncured resin portion are formed in the resin layer by performing lithographic exposure of the resin layer, and the uncured resin portion is on the top of the ridge structure. The uncured resin portion is removed to form a dent which is provided on the top of the ridge structure. An overall surface of the cured resin portion and dent is etched to form an etched resin layer. An opening is formed in the etched resin layer by thinning the cured resin portion, and a part of the insulating film is exposed in the opening of the etched resin layer. The part of the insulating film is etched using the etched resin layer as a mask to form an opening in the insulating film.
    Type: Application
    Filed: October 31, 2008
    Publication date: June 4, 2009
    Inventors: Hideki Yagi, Toshio Nomaguchi, Kenji Hiratsuka
  • Patent number: 7496125
    Abstract: As a composite laser rod capable of satisfying the positional stability and output stability of a laser beam, a laser rod in which a laser active element is doped is intimately inserted into a hollow portion of a non-doped ceramic pipe that has a crystal structure the same as the laser rod followed by baking so as to remove a gap and strain at an interface between the laser rod and the ceramic pipe after the baking further followed by polishing a surface of the ceramic pipe to form a ceramic skin layer, and thereby a composite laser rod is formed. In the composite laser rod, an influence due to fluctuation in the cooling capacity of cooling water or a heat sink is averaged by a non-doped skin layer, temperature fluctuation of the laser rod is suppressed, and an influence of vibration from the cooling water or a cooling fan can be suppressed.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: February 24, 2009
    Assignee: Konoshima Chemical Co. Ltd.
    Inventors: Hikaru Kouta, Yoshikazu Suzuki, Shuetsu Kudo, Masaki Tsunekane, Katsuji Mukaihara, Takagimi Yanagitani, Hideki Yagi
  • Publication number: 20080025895
    Abstract: The present invention provides a lutetium oxide sinter to which yttrium is added in an amount of 100 mass ppm to 7000 mass ppm, whose average particle size is from 0.7 to 20 ?m, and with which there is no precipitation of a hetero phase containing yttrium at the grain boundary.
    Type: Application
    Filed: September 28, 2004
    Publication date: January 31, 2008
    Applicant: KONOSHIMA CHEMICAL CO., LTD.
    Inventors: Shunsuke Hosokawa, Hideki Yagi, Takagimi Yanagitani
  • Publication number: 20070280317
    Abstract: As a composite laser rod capable of satisfying the positional stability and output stability of a laser beam, a laser rod in which a laser active element is doped is intimately inserted into a hollow portion of a non-doped ceramic pipe that has a crystal structure the same as the laser rod followed by baking so as to remove a gap and strain at an interface between the laser rod and the ceramic pipe after the baking further followed by polishing a surface of the ceramic pipe to form a ceramic skin layer, and thereby a composite laser rod is formed. In the composite laser rod, an influence due to fluctuation in the cooling capacity of cooling water or a heat sink is averaged by a non-doped skin layer, temperature fluctuation of the laser rod is suppressed, and an influence of vibration from the cooling water or a cooling fan can be suppressed.
    Type: Application
    Filed: November 17, 2006
    Publication date: December 6, 2007
    Inventors: Hikaru KOUTA, Yoshikazu Suzuki, Shuetsu Kudo, Masaki Tsunekane, Katsuji Mukaihara, Takagimi Yanagitani, Hideki Yagi
  • Publication number: 20070253456
    Abstract: The invention provides a light-emitting device, where the active region thereof may be escaped from being damaged by the plasma process. The device is first formed with a semiconductor layer on the semiconductor substrate, next provided with an etching mask. Using the mask, the semiconductor layer on the substrate is dry-etched to form a periodic structure with grooves and mesas. The active regions are buried within the grooves by the OMVPE method.
    Type: Application
    Filed: April 25, 2007
    Publication date: November 1, 2007
    Inventor: Hideki Yagi
  • Patent number: 7158546
    Abstract: As a composite laser rod capable of satisfying the positional stability and output stability of a laser beam, a laser rod in which a laser active element is doped is intimately inserted into a hollow portion of a non-doped ceramic pipe that has a crystal structure the same as the laser rod followed by baking so as to remove a gap and strain at an interface between the laser rod and the ceramic pipe after the baking further followed by polishing a surface of the ceramic pipe to form a ceramic skin layer, and thereby a composite laser rod is formed. In the composite laser rod, an influence due to fluctuation in the cooling capacity of cooling water or a heat sink is averaged by a non-doped skin layer, temperature fluctuation of the laser rod is suppressed, and an influence of vibration from the cooling water or a cooling fan can be suppressed.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: January 2, 2007
    Assignees: NEC Corporation, Konoshima Chemical Co., Ltd.
    Inventors: Hikaru Kouta, Yoshikazu Suzuki, Shuetsu Kudo, Masaki Tsunekane, Katsuji Mukaihara, Takagimi Yanagitani, Hideki Yagi
  • Patent number: 7128731
    Abstract: A syringe-type container for liquid medicine which includes a barrel provided with an easily breakable piercing needle at a distal end of a needle-connecting portion thereof; a gasket inserted and held in the barrel; and a guide means fitted on the barrel from the distal side wherein. The syringe-type container is so constructed that turning of the guide means relative to the barrel breaks off the piercing needle from the needle-connecting portion.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: October 31, 2006
    Assignee: Nipro Corporation
    Inventors: Masafumi Aramata, Hideki Yagi, Hitoshi Futagawa, Satoru Igarashi
  • Patent number: 7016680
    Abstract: A processing control unit appropriately detects that a mobile communication terminal is moving at a high speed and changes criteria for reselection of a cell. When reselection of a cell occurs, the processing control unit searches a cell transition list (step S10), and determines whether or not a cell selected as a local station by the reselection of a cell has already been registered in the cell transition list (step S11). Upon determining that the cell is not registered, the processing control unit registers the cell selected as the local station in the cell transition list (step S12) and increments a variable N indicating the number of registered cells by one (step S13).
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: March 21, 2006
    Assignee: Kabushiki Kaisha Kenwood
    Inventor: Hideki Yagi
  • Patent number: 6990026
    Abstract: A CPU locks a memory card attached to a card mount with a password by a lock/unlock processing according to an access limit application program, and unlocks the lock based on a predetermined condition. The function to control the secrecy of data recorded on the card is thus improved.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: January 24, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideki Yagi
  • Publication number: 20050257017
    Abstract: Methods, apparatus, software and systems for securely erasing data from a memory card. A number of hidden spare blocks of memory in an inaccessible region of each memory bank is determined. A block of memory is repeatedly overwritten with a data pattern in each memory bank up to the number of hidden spare blocks in one embodiment. A block of memory is repeatedly erased in each memory bank up to the number of hidden spare blocks in another embodiment. The blocks of memory in the accessible region of each memory bank are erased or overwritten with the data pattern.
    Type: Application
    Filed: May 14, 2004
    Publication date: November 17, 2005
    Inventor: Hideki Yagi
  • Patent number: 6901975
    Abstract: The drug solution container with a connector for communicating contains a drug solution container having at a tip end thereof an injection needle connecting part, and a hollow connector for communicating attached to a tip end of the drug solution container, and the connector for communicating contains a cylindrical guide part with a bottom capable of being slidably attached to an opening of a vial, and a hollow penetrating member provided at a center of the bottom of the guide part to penetrate the bottom. The penetrating member contains a penetrating needle at a tip end side with respect to the bottom, and a connecting part at a base end side with respect to the bottom, and the connecting part is connected to the injection needle connecting part through a fragile portion. According to the drug solution container with a connector for communicating, an operation for preparation of a drug solution can be easily carried out in a short period of time without causing injury of an operator or coring.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: June 7, 2005
    Assignee: Nipro Corporation
    Inventors: Masafumi Aramata, Hideki Yagi, Toshikazu Hirayama, Satoru Igarashi, Yoshihisa Murai, Teruhisa Hirobe
  • Publication number: 20050065140
    Abstract: There is provided a selective serotonin reuptake inhibitor having affinity for serotonin 1A receptors which comprises a cyclic amine represented by the formula: wherein G represents a formula (2): a prodrug of said cyclic amine, or a pharmaceutically acceptable salt of said cyclic amine or prodrug, as an active ingredient.
    Type: Application
    Filed: December 12, 2002
    Publication date: March 24, 2005
    Inventors: Toru Kodo, Hideki Yagi, Akihito Dan, Shuji Masumoto, Naoya Kinomura, Koji Koyama
  • Publication number: 20040268074
    Abstract: A CPU locks a memory card attached to a card mount with a password by a lock/unlock processing according to an access limit application program, and unlocks the lock based on a predetermined condition. The function to control the secrecy of data recorded on the card is thus improved.
    Type: Application
    Filed: April 21, 2004
    Publication date: December 30, 2004
    Inventor: Hideki Yagi
  • Publication number: 20040053626
    Abstract: A processing control unit appropriately detects that a mobile communication terminal is moving at a high speed and changes criteria for reselection of a cell. When reselection of a cell occurs, the processing control unit searches a cell transition list (step S10), and determines whether or not a cell selected as a local station by the reselection of a cell has already been registered in the cell transition list (step S11). Upon determining that the cell is not registered, the processing control unit registers the cell selected as the local station in the cell transition list (step S12) and increments a variable N indicating the number of registered cells by one (step S13).
    Type: Application
    Filed: June 20, 2003
    Publication date: March 18, 2004
    Inventor: Hideki Yagi
  • Publication number: 20040039365
    Abstract: The drug solution container with a connector for communicating contains a drug solution container having at a tip end thereof an injection needle connecting part, and a hollow connector for communicating attached to a tip end of the drug solution container, and the connector for communicating contains a cylindrical guide part with a bottom capable of being slidably attached to an opening of a vial, and a hollow penetrating member provided at a center of the bottom of the guide part to penetrate the bottom. The penetrating member contains a penetrating needle at a tip end side with respect to the bottom, and a connecting part at a base end side with respect to the bottom, and the connecting part is connected to the injection needle connecting part through a fragile portion. According to the drug solution container with a connector for communicating, an operation for preparation of a drug solution can be easily carried out in a short period of time without causing injury of an operator or coring.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 26, 2004
    Inventors: Masafumi Aramata, Hideki Yagi, Toshikazu Hirayama, Satoru Igarashi, Yoshihisa Murai, Teruhisa Hirobe