Patents by Inventor Takehiko Hayashi

Takehiko Hayashi 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: 11396451
    Abstract: A tungsten carbide powder contains tungsten carbide as a main component and chromium, in which, when mass concentrations of tungsten and chromium are measured at 100 or more analysis points randomly selected from a field of view of SEM observation of the tungsten carbide powder, a standard deviation ? of distribution of the ratio by percentage of the concentration of chromium to the total concentration of tungsten and chromium is 0.5 or less.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: July 26, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato Michiuchi, Takamasa Onoki, Katsumi Okamura, Takayuki Fudo, Takehiko Hayashi
  • Patent number: 11339096
    Abstract: A tungsten carbide powder 1 includes bonded bodies 10 each including a plurality of tungsten carbide crystal grains 11, in which the bonded bodies 10 include, at a grain boundary 11a between the plurality of tungsten carbide crystal grains 11, a chromium-concentrated region 12 which has a chromium concentration higher than that in the tungsten carbide crystal grains 11.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: May 24, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato Michiuchi, Takamasa Onoki, Katsumi Okamura, Takayuki Fudo, Takehiko Hayashi
  • Publication number: 20220144708
    Abstract: A tungsten carbide powder 1 includes bonded bodies 10 each including a plurality of tungsten carbide crystal grains 11, in which the bonded bodies 10 include, at a grain boundary 11a between the plurality of tungsten carbide crystal grains 11, a chromium-concentrated region 12 which has a chromium concentration higher than that in the tungsten carbide crystal grains 11.
    Type: Application
    Filed: April 21, 2020
    Publication date: May 12, 2022
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Masato MICHIUCHI, Takamasa ONOKI, Katsumi OKAMURA, Takayuki FUDO, Takehiko HAYASHI
  • Patent number: 11312632
    Abstract: Provided is a tungsten carbide powder satisfying such a condition that when the Fsss particle size thereof is represented by a (?m) and the BET particle size thereof converted from the BET specific surface area is represented by b (?m), a is 0.40 ?m or more and 1.50 ?m or less, and b/a is 0.17 or more and 0.35 or less.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 26, 2022
    Assignee: A.L.M.T. Corp.
    Inventors: Takehiko Hayashi, Tomoyuki Ishida, Takahiro Yamakawa
  • Patent number: 11293082
    Abstract: A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 ?m and less than or equal to 1.5 ?m, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y?0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 5, 2022
    Assignee: A.L.M.T. Corp.
    Inventors: Takayuki Fudo, Kazuo Sasaya, Takehiko Hayashi
  • Publication number: 20220089447
    Abstract: A tungsten carbide powder contains tungsten carbide as a main component and chromium, in which, when mass concentrations of tungsten and chromium are measured at 100 or more analysis points randomly selected from a field of view of SEM observation of the tungsten carbide powder, a standard deviation ? of distribution of the ratio by percentage of the concentration of chromium to the total concentration of tungsten and chromium is 0.5 or less.
    Type: Application
    Filed: April 21, 2020
    Publication date: March 24, 2022
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Masato MICHIUCHI, Takamasa ONOKI, Katsumi OKAMURA, Takayuki FUDO, Takehiko HAYASHI
  • Publication number: 20210368138
    Abstract: A microscope system is provided with a microscope that acquires images at least at a first magnification and a second magnification higher than the first magnification, and a processor. The processor is configured to specify a type of a container in which a specimen is placed, and when starting observation of the specimen placed in the container at the second magnification, the processor is configured to specify a map region corresponding to a map image constructed by stitching together a plurality of second images acquired by the microscope at a higher magnification than the first magnification by performing object detection according to the type of the container on a first image that includes the container acquired by the microscope at the first magnification, and cause a display unit to display the first image and a range of the map region on the first image.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Keita KOJIMA, Motohiro SHIBATA, Takehiko HAYASHI, Keigo MORI
  • Publication number: 20210364774
    Abstract: A microscope system is provided with a microscope that acquires images at least at a first magnification and a second magnification higher than the first magnification, and a processor. The processor is configured to specify a type of a container in which a specimen is placed, and when starting observation of the specimen placed in the container at the second magnification, the processor is configured to specify an observation start position by performing object detection according to the type of container on a first image that includes the container acquired by the microscope at the first magnification, and control a relative position of the microscope with respect to the specimen such that the observation start position is contained in a field of view at the second magnification of the microscope.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Motohiro SHIBATA, Takehiko HAYASHI, Keita KOJIMA, Keigo MORI
  • Publication number: 20200392606
    Abstract: A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 ?m and less than or equal to 1.5 ?m, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y?0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).
    Type: Application
    Filed: November 13, 2018
    Publication date: December 17, 2020
    Applicant: A.L.M.T. Corp.
    Inventors: Takayuki FUDO, Kazuo SASAYA, Takehiko HAYASHI
  • Patent number: 10858252
    Abstract: A complex carbonitride powder contains Ti as a main component element and at least one additional element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, and Si. The complex carbonitride powder includes a plurality of complex carbonitride particles containing Ti and the additional element. The plurality of complex carbonitride particles include a plurality of homogeneous composition particles where average concentrations of Ti and the additional element in each complex carbonitride particle have a difference in a range of greater than or equal to ?5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in the whole complex carbonitride powder. A cross-sectional area of the homogeneous composition particles is greater than or equal to 90% of a cross-sectional area of the complex carbonitride particles 1p.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: December 8, 2020
    Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Masato Michiuchi, Keiichi Tsuda, Yoshihiro Minato, Tomoyuki Ishida, Akihide Matsumoto, Takehiko Hayashi
  • Publication number: 20200346935
    Abstract: Provided is a tungsten carbide powder satisfying such a condition that when the Fsss particle size thereof is represented by a (?m) and the BET particle size thereof converted from the BET specific surface area is represented by b (?m), a is 0.40 ?m or more and 1.50 ?m or less, and b/a is 0.17 or more and 0.35 or less.
    Type: Application
    Filed: October 12, 2017
    Publication date: November 5, 2020
    Applicant: A.L.M.T. Corp.
    Inventors: Takehiko HAYASHI, Tomoyuki ISHIDA, Takahiro YAMAKAWA
  • Patent number: 10782515
    Abstract: A microscope system includes: a stage on which an observation sample is mounted; an objective lens; a driving unit configured to drive the stage or the objective lens to change a distance between the stage and the objective lens; a light source configured to selectively irradiate the observation sample with one of autofocus detection light and excitation light; an irradiation region changing unit configured to change a region in which the observation sample is irradiated with light; a first mirror unit; a second mirror unit; a mirror arrangement unit configured to selectively arrange one of the first mirror unit and the second mirror unit on the optical axis; an imaging unit configured to capture the observation sample; a light intensity calculating unit configured to calculate light intensity; and a controller configured to adjust, based on a reference position, a distance between the observation subject and the objective lens.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 22, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Takehiko Hayashi
  • Publication number: 20190121111
    Abstract: A microscope system includes: a stage on which an observation sample is mounted; an objective lens; a driving unit configured to drive the stage or the objective lens to change a distance between the stage and the objective lens; a light source configured to selectively irradiate the observation sample with one of autofocus detection light and excitation light; an irradiation region changing unit configured to change a region in which the observation sample is irradiated with light; a first mirror unit; a second mirror unit; a mirror arrangement unit configured to selectively arrange one of the first mirror unit and the second mirror unit on the optical axis; an imaging unit configured to capture the observation sample; a light intensity calculating unit configured to calculate light intensity; and a controller configured to adjust, based on a reference position, a distance between the observation subject and the objective lens.
    Type: Application
    Filed: October 23, 2018
    Publication date: April 25, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Takehiko HAYASHI
  • Publication number: 20190092638
    Abstract: A complex carbonitride powder contains Ti as a main component element and at least one additional element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, and Si. The complex carbonitride powder includes a plurality of complex carbonitride particles containing Ti and the additional element. The plurality of complex carbonitride particles include a plurality of homogeneous composition particles where average concentrations of Ti and the additional element in each complex carbonitride particle have a difference in a range of greater than or equal to ?5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in the whole complex carbonitride powder. A cross-sectional area of the homogeneous composition particles is greater than or equal to 90% of a cross-sectional area of the complex carbonitride particles 1p.
    Type: Application
    Filed: October 21, 2016
    Publication date: March 28, 2019
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Masato Michiuchi, Keiichi Tsuda, Yoshihiro Minato, Tomoyuki Ishida, Akihide Matsumoto, Takehiko Hayashi
  • Patent number: 7908450
    Abstract: A memory management unit manages a memory that stores a code, and sets that the memory that stores the code to be executed is valid to make a processor execute the code stores a verification key used to verify a validity of the code in a verification-key storing unit. When the code is stored in the memory and ready to be executed by the processor, the memory management unit verifies the validity of the code using the verification key stored in the verification-key storing unit and verification information assigned to the code. The memory management unit controls to set that the memory is valid when the validity is verified by the verifying unit, and not to set that the memory is valid when the validity is not verified by the verifying unit.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: March 15, 2011
    Assignee: Fujitsu Limited
    Inventors: Jun Kamada, Takayuki Hasebe, Souichi Okada, Takehiko Hayashi
  • Patent number: 7477742
    Abstract: A contents utilization control apparatus includes an input unit for inputting a) contents with control module that consist of contents and a control module, and b) a license with control module that consists of a license prepared from contents utilization approval information and a control module. The control module in the contents with control module and the control module in the license with control module cooperate with each other to carry out a control relating to the utilization of the contents.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: January 13, 2009
    Assignee: Fujitsu Limited
    Inventors: Bintatsu Noda, Seigo Kotani, Takehiko Hayashi, Jun Kamada
  • Patent number: 7147150
    Abstract: A personal identification terminal includes a plurality of identification means or a plurality of identification levels that are selectable for use, and means for selecting one of the plural identification means or one of the identification levels in accordance with identification means/level setting information that is received from a server every time when receiving a request for identification from the server. The personal identification terminal sends used means/level information that indicates one of the identification means or one of the identification levels that was used for the real identification back to the server in a format that enables detection of an alteration thereof together with a result of the identification.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: December 12, 2006
    Assignee: Fujitsu Limited
    Inventors: Souichi Okada, Takayuki Hasebe, Jun Kamada, Takehiko Hayashi
  • Patent number: 7137130
    Abstract: A laser light source (61) and a heat-radiating plate (71) are provided on a pickup base (51). The laser light source (61) irradiates a laser beam to an optical disk (41). The heat-radiating plate (71) has at least one part exposed outside the pickup base (51), having a predetermined distance between the heat-radiating plate (71) and the pickup base (51), and radiates heat generated by the laser light source (61). The plate (71) can radiate heat also from a surface opposing the pickup base (51) and can therefore have a high heat-radiating efficiency.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: November 14, 2006
    Assignee: Pioneer Corporation
    Inventors: Masaya Murata, Yuichi Mizuuchi, Masayuki Koyama, Takehiko Hayashi, Tsuyoshi Iwano
  • Patent number: 7124420
    Abstract: A communication hole (55) is provided in a pickup base (51). A laser light source (61) is provided at an end of the communication hole (55). A grating (71) is provided at another end of the communication hole (55). The communication hole (55) is provided with a heat radiation path (81) which connects the inside of the communication hole (55) with the outside of the pickup base (51). Heat generated from the laser light source (61) is radiated from the heat radiation path (81).
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: October 17, 2006
    Assignee: Pioneer Corporation
    Inventors: Masaya Murata, Yuichi Mizuuchi, Masayuki Koyama, Takehiko Hayashi, Tsuyoshi Iwano
  • Patent number: D781946
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 21, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Yasuo Funakoshi, Takehiko Hayashi, Takayuki Kono