Patents by Inventor Satoshi Sawamura

Satoshi Sawamura 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: 12009636
    Abstract: An optical semiconductor device outputting a predetermined wavelength of laser light includes a quantum well active layer positioned between a p-type cladding layer and an n-type cladding layer in thickness direction. The optical semiconductor device includes a separate confinement heterostructure layer positioned between the quantum well active layer and the n-type cladding layer. The optical semiconductor device further includes an electric-field-distribution-control layer positioned between the separate confinement heterostructure layer and the n-type cladding layer and configured by at least two semiconductor layers having band gap energy greater than band gap energy of a barrier layer constituting the quantum well active layer. The optical semiconductor device is applied to a ridge-stripe type laser.
    Type: Grant
    Filed: February 3, 2023
    Date of Patent: June 11, 2024
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Junji Yoshida, Hirokazu Itoh, Satoshi Irino, Yuichiro Irie, Taketsugu Sawamura
  • Patent number: 11829825
    Abstract: According to an embodiment, a portable electronic device that executes a command from a host device includes a sensor and a processor. The sensor acquires biometric information. The processor causes the sensor to acquire first biometric information for generating a template used for authentication, and after the first biometric information is acquired, causes the sensor to acquire second biometric information used for generating the template. Where the similarity between the first biometric information and the second biometric information exceeds a first threshold value, the processor outputs a signal indicating that the second biometric information is inappropriate for use as biometric information for generating the template.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: November 28, 2023
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Satoshi Sawamura
  • Publication number: 20220156546
    Abstract: According to an embodiment, a portable electronic device that executes a command from a host device includes a sensor and a processor. The sensor acquires biometric information. The processor causes the sensor to acquire first biometric information for generating a template used for authentication, and after the first biometric information is acquired, causes the sensor to acquire second biometric information used for generating the template. Where the similarity between the first biometric information and the second biometric information exceeds a first threshold value, the processor outputs a signal indicating that the second biometric information is inappropriate for use as biometric information for generating the template.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 19, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Satoshi SAWAMURA
  • Patent number: 10872137
    Abstract: An integrated circuit (IC) card of an embodiment includes a communicator, a storage storing a plurality of pieces of biometric authentication information, an acquirer, and a processor. The communicator communicates with a terminal device. The acquirer acquires biometric information of a user. The processor collates the biometric information acquired by the acquirer with each of the plurality of pieces of biometric authentication information stored in the storage in a case that the communicator receives a command from the terminal device and updates some of the plurality of pieces of biometric authentication information stored in the storage with information on the basis of the biometric information acquired by the acquirer in accordance with collation results for the biometric authentication information.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: December 22, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Satoshi Sawamura
  • Patent number: 10296415
    Abstract: According to one embodiment, an IC card includes a first transmission processing section, creation section, second transmission processing section, third reception processing section, and third transmission processing section. The first transmission processing section transmits a first response including the request data. The creation section creates a detailed redundancy check code including a redundancy check code of each of divided blocks. The second transmission processing section transmits the detailed redundancy check code. The third reception processing section receives a third command to request an erroneous divided block. The third transmission processing section transmits a third response including a divided block corresponding to the erroneous divided block.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: May 21, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Satoshi Sawamura
  • Publication number: 20180276358
    Abstract: An integrated circuit (IC) card of an embodiment includes a communicator, a storage storing a plurality of pieces of biometric authentication information, an acquirer, and a processor. The communicator communicates with a terminal device. The acquirer acquires biometric information of a user. The processor collates the biometric information acquired by the acquirer with each of the plurality of pieces of biometric authentication information stored in the storage in a case that the communicator receives a command from the terminal device and updates some of the plurality of pieces of biometric authentication information stored in the storage with information on the basis of the biometric information acquired by the acquirer in accordance with collation results for the biometric authentication information.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 27, 2018
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Satoshi SAWAMURA
  • Publication number: 20170220409
    Abstract: According to one embodiment, an IC card includes a first transmission processing section, creation section, second transmission processing section, third reception processing section, and third transmission processing section. The first transmission processing section transmits a first response including the request data. The creation section creates a detailed redundancy check code including a redundancy check code of each of divided blocks. The second transmission processing section transmits the detailed redundancy check code. The third reception processing section receives a third command to request an erroneous divided block. The third transmission processing section transmits a third response including a divided block corresponding to the erroneous divided block.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Inventor: Satoshi Sawamura
  • Publication number: 20170200071
    Abstract: According to one embodiment, an IC card includes a communication unit, a magnetic field strength determination unit, and a magnetic field strength transmission processing unit. The communication unit transmits/receives data to/from an external apparatus in a non-contact manner. The magnetic field strength determination unit determines a magnetic field strength necessary to execute processing. The magnetic field strength transmission processing unit causes the communication unit to transmit, to the external apparatus, information indicating the magnetic field strength determined by the magnetic field strength determination unit.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Satoshi SAWAMURA
  • Patent number: 9667387
    Abstract: According to one embodiment, an IC card includes a first transmission processing section, creation section, second transmission processing section, third reception processing section, and third transmission processing section. The first transmission processing section transmits a first response including the request data. The creation section creates a detailed redundancy check code including a redundancy check code of each of divided blocks. The second transmission processing section transmits the detailed redundancy check code. The third reception processing section receives a third command to request an erroneous divided block. The third transmission processing section transmits a third response including a divided block corresponding to the erroneous divided block.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: May 30, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Satoshi Sawamura
  • Publication number: 20160085620
    Abstract: According to one embodiment, an IC card includes a first transmission processing section, creation section, second transmission processing section, third reception processing section, and third transmission processing section. The first transmission processing section transmits a first response including the request data. The creation section creates a detailed redundancy check code including a redundancy check code of each of divided blocks. The second transmission processing section transmits the detailed redundancy check code. The third reception processing section receives a third command to request an erroneous divided block. The third transmission processing section transmits a third response including a divided block corresponding to the erroneous divided block.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 24, 2016
    Inventor: Satoshi Sawamura
  • Patent number: 6875836
    Abstract: There is provided a transparent silicone film-forming composition which forms an ultraviolet-absorbing and infrared-screening film exhibiting a film hardness of 6H to 9H or more after curing on a transparent substrate such as glass and plastic. The transparent silicone film-forming composition contains a reaction product of an alkoxysilane having an epoxy group and alkoxysilane having an amino group with an active hydrogen, an acid catalyst, a finely ground ITO cocatalyst and at least one solvent selected from organic solvents. The transparent silicone film-forming composition can also contain a reaction product of an alkoxysilane having an epoxy group and alkoxysilane having an amino group with an active hydrogen as well as tri- or dialkyloxysilane mixed with monoalkoxysilane and/or glycidesilane, an acid catalyst, a finely ground ITO cocatalyst and at least one solvent selected from organic solvents.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: April 5, 2005
    Inventors: Kazutoshi Yoshihara, Satoshi Sawamura
  • Patent number: 6730240
    Abstract: A colored, transparent film-forming composition, which is made up of (a) a reaction product of an epoxy group-containing alkoxysilane (a-1) and an amino group-containing alkoxysilane (a-2) having active hydrogen therein, (b) an acid catalyst, (c) an alkali-soluble UV absorber, (d) at least one solvent selected from organic solvents having a boiling point of 100 to 250° C., and (e) a dye and/or a pigment, has a good coating performance and room temperature curing characteristic and can provide a film having good film strength and film removability after use. The coating method of the composition and the removing method of the film obtained from the composition are also described.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: May 4, 2004
    Assignees: Ishihara Chemical Co., Ltd., Sunshine Inc.
    Inventors: Kunio Arimoto, Chihito Tago, Hideo Nishida, Yasuhiro Maehara, Tatsuya Ohta, Kazutoshi Yoshihara, Satoshi Sawamura
  • Publication number: 20030069350
    Abstract: There is provided a transparent silicone film-forming composition which forms a ultraviolet absorbing and infrared screening film exhibiting film hardness of 6H to 9H or more after curing on a transparent substrate such as glass and plastic. A transparent silicone film-forming composition comprises a reaction product of alkoxysilane having an epoxy group and alkoxylsilane having an amino group with active hydrogen, an acid catalyst, a finely ground ITO cocatalyst and at least one solvent selected from organic solvents. A transparent silicone film-forming composition comprising a reaction product of alkoxysilane having an epoxy group and alkoxylsilane having an amino group with active hydrogen as well as tri- or dialkoxysilane mixed with monoalkoxysilane and/or glycidsilane, an acid catalyst, a finely ground ITO cocatalyst and at least one solvent selected from organic solvents.
    Type: Application
    Filed: August 15, 2002
    Publication date: April 10, 2003
    Inventors: Kazutoshi Yoshihara, Satoshi Sawamura
  • Publication number: 20010031812
    Abstract: A colored, transparent film-forming composition, which comprises (a) a reaction product of an epoxy group-containing alkoxysilane (a-1) and an amino group-containing alkoxysilane (a-2) having active hydrogen therein, (b) an acid catalyst, (c) an alkali-soluble UV absorber, (d) at least one solvent selected from organic solvents having a boiling point of 100 to 250° C., and (e) a dye and/or a pigment, has a good coating performance, a good room temperature curing characteristic and can provide a film having good film strength and good film removability after use. The coating method of the composition and the removing method of the film obtained from the composition are also described.
    Type: Application
    Filed: January 16, 2001
    Publication date: October 18, 2001
    Inventors: Kunio Arimoto, Chihito Tago, Hideo Nishida, Yasuhiro Maehara, Tatsuya Ohta, Kazutoshi Yoshihara, Satoshi Sawamura