Patents by Inventor Jun Sakai

Jun Sakai 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: 20230422408
    Abstract: A printed wiring board includes a first conductor layer, a resin insulating layer having an opening extending from a first surface to a second surface of the resin insulating layer and laminated on the first conductor layer, a second conductor layer formed on the first surface of the resin insulating layer such that the first conductor layer is facing the second surface of the resin insulating layer on the opposite side with respect to the first surface, and a via conductor formed in the opening of the resin insulating layer such that the via conductor is connecting the first conductor layer and the second conductor layer and that the via conductor and the second conductor layer include a seed layer and an electrolytic plating layer formed on the seed layer. The seed layer includes an amorphous metal in a range of 5 wt % to 80 wt %.
    Type: Application
    Filed: June 21, 2023
    Publication date: December 28, 2023
    Applicant: IBIDEN CO., LTD.
    Inventors: Jun SAKAI, Kyohei YOSHIKAWA
  • Publication number: 20230389795
    Abstract: An ophthalmic information processing apparatus is configured to remove an artifact of an image of a subject's eye obtained using an ophthalmic apparatus. The ophthalmic information processing apparatus includes an identifying unit and a correction unit. The identifying unit is configured to identify a correction region in the image based on a dioptric power of the subject's eye. The correction unit is configured to correct a luminance in the correction region identified by the identifying unit, based on a correction amount corresponding to the dioptric power of the subject's eye.
    Type: Application
    Filed: February 7, 2023
    Publication date: December 7, 2023
    Applicant: Topcon Corporation
    Inventors: Ryuichi OHARA, Jun SAKAI, Hiroyuki AOKI
  • Publication number: 20230319987
    Abstract: A printed wiring board includes a first conductor layer, an insulating layer formed on the first conductor layer, a second conductor layer formed on a surface of the insulating layer and including a conductor circuit, and a via conductor formed in an opening formed in the insulating layer and connecting the first and second conductor layers. The second conductor layer and via conductor include a seed layer and an electrolytic plating layer formed on the seed layer such that the seed layer has a first layer and a second layer formed on the first layer, the first layer has a width greater than a width of the second layer in cross section of the conductor circuit in the second conductor layer and that the electrolytic plating layer has a width greater than the width of the first layer in cross section of the conductor circuit in the second conductor layer.
    Type: Application
    Filed: March 28, 2023
    Publication date: October 5, 2023
    Applicant: IBIDEN CO., LTD.
    Inventors: Jun SAKAI, Shiho SHIMADA
  • Publication number: 20230308198
    Abstract: A radio wave abnormality detection system, a radio wave abnormality detection method, and a radio wave abnormality detection program that are capable of accurately detecting a radio wave abnormality are provided. The radio wave abnormality detection system includes: a determination unit that determines an extraction period, based on a transmission duration estimated from first received data of a radio wave received at a first timing; a learning unit that generates a learned model in which a feature value extracted in the extraction period from second received data of a radio wave received at a second timing is machine-learned; and a detection unit that detects a radio wave abnormality by using a feature value extracted in the extraction period from third received data of a radio wave received at a third timing, and the learned model.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 28, 2023
    Applicant: NEC Corporation
    Inventor: Jun SAKAI
  • Patent number: 11757548
    Abstract: A transmission apparatus recognition apparatus includes a receiver configured to receives a signal wirelessly transmitted from a transmission apparatus, a signal region detector, a feature extractor, and a recognizer. The signal region detector generates a spectrogram from a received signal received by the receiver, and detects a signal region parameter indicating a specific signal region based on the spectrogram. The feature extractor converts the received signal based on a signal conversion parameter according to the signal region parameter, and extracts a feature from the converted signal. The recognizer calculates a degree of similarity based on the extracted feature and a feature stored in advance, and recognizes the transmission apparatus based on the degree of similarity. The transmission apparatus recognition apparatus adjusts the signal region parameter based on a recognition accuracy of the recognizer.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: September 12, 2023
    Assignee: NEC CORPORATION
    Inventors: Taichi Ohtsuji, Jun Sakai
  • Publication number: 20230276570
    Abstract: A printed wiring board includes a first conductor layer, an insulating layer formed on the first conductor layer, a second conductor layer formed on the insulating layer, and a via conductor formed in the insulating layer such that the via conductor is connecting the first and second conductor layers. The insulating layer has opening exposing portion of the first conductor layer such that the via conductor is formed in the opening, the second conductor layer and via conductor are formed such that the second conductor layer and via conductor include a seed layer and an electrolytic plating layer on the seed layer, and the insulating layer includes resin and inorganic particles dispersed in the resin such that the particles include first particles forming inner wall surface in the opening and second particles embedded in the insulating layer and the first particles have shapes different from shapes of the second particles.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 31, 2023
    Applicant: IBIDEN CO., LTD.
    Inventors: Jun SAKAI, Takuya INISHI
  • Publication number: 20230218165
    Abstract: A medical system of an aspect example includes a data acquiring unit and a data processor. The data acquiring unit is configured to acquire data from an eye fundus of a patient using at least one optical method. The data processor is configured to process the data acquired by the data acquiring unit in order to generate information on the circulatory system of the patient.
    Type: Application
    Filed: September 21, 2021
    Publication date: July 13, 2023
    Applicants: Topcon Corporation, National University Corporation Asahikawa Medical University
    Inventors: Kana MINAMIDE, Masahiro AKIBA, Jun SAKAI, Akitoshi YOSHIDA
  • Publication number: 20230092448
    Abstract: An abnormality detection apparatus according to an example embodiment includes a reception unit for receiving radio waves, a feature amount extraction unit for extracting a plurality of feature amounts in a predetermined frequency band from the received radio waves, a recording unit for recording the plurality of extracted feature amounts and the frequency band in association with each other, and a processing unit for acquiring a plurality of feature amounts in a predetermined range from the plurality of accumulated feature amounts, determining whether or not the acquired feature amounts fall within a preset normal range, and generating, based on a result of the determination, an abnormality determination mask, threshold values for the plurality of feature amounts, in order to detect an abnormality of the radio waves being set in the abnormality determination mask.
    Type: Application
    Filed: December 21, 2020
    Publication date: March 23, 2023
    Applicant: NEC Corporation
    Inventors: Umihiko ITO, Kenji KOUNO, Toshiki TAKEUCHI, Jun SAKAI, Taichi OHTSUJI
  • Patent number: 11560698
    Abstract: A state analysis device is capable of determining a state of the interior of piping with high precision, and includes: an index calculation means for deriving an index indicating the state of the piping, based on a flow speed of fluid flowing out of the piping, and a fluid pressure of the interior of the piping at two or more locations of the piping; and a determination means for determining the state of the piping, based on the index.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: January 24, 2023
    Assignee: NEC CORPORATION
    Inventors: Masatake Takahashi, Manabu Kusumoto, Jun Sakai
  • Patent number: 11510620
    Abstract: Examples described herein include sensor devices for measuring a parameter of a user. The sensor devices may include a reusable portion (e.g., a sensor). The sensor devices may include one or more weakened portions that may fracture on removal of a portion of the sensor device from the user. Fracturing the weakened portions may expose the reusable portion (e.g., the sensor). Accordingly, the reusable portion may be more readily observed and collected for reuse.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: November 29, 2022
    Assignee: Nihon Kohden Corporation
    Inventors: Fumiyuki Matsumura, Hirohiko Ikeya, Norihito Konno, Jun Sakai
  • Publication number: 20220276333
    Abstract: The present invention includes: a learning data generation unit (53) that acquires an expected value of a measured value of received power; a spatial distribution synthesis unit (54) that calculates an expected value of a measured value of received power when a radio wave is transmitted from any position in a target area; a likelihood calculation unit (55) that calculates a likelihood distribution that a radio wave source exists at each point of the target area; a position estimation unit (56) that estimates transmission power of a transmission source to be estimated, estimates a likelihood distribution at the transmission power, and estimates a position of the transmission source; and a display unit (57) that displays a spatial distribution of a conformity degree in the target area and a position of a maximum likelihood value and a position of a local maximum value of the likelihood calculated (55).
    Type: Application
    Filed: September 9, 2019
    Publication date: September 1, 2022
    Applicant: NEC Corporation
    Inventor: Jun SAKAI
  • Publication number: 20220270460
    Abstract: A wireless terminal detection system provided with user position information acquisition means for measuring a position of a reception-side wireless terminal; pattern classification means for classifying movement patterns extracted from position history information of the reception-side wireless terminal into ordinary patterns and non-ordinary patterns based on classification results in which the movement patterns are classified in accordance with times and positions; and determination means for determining whether a transmission-side wireless terminal, which is a transmission source of radio waves received by the reception-side wireless terminal, is a suspicious terminal based on a reception history of radio waves from the transmission-side wireless terminal in time intervals classified as the non-ordinary patterns.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 25, 2022
    Applicant: NEC Corporation
    Inventors: Jun SAKAI, Masaki KITSUNEZUKA, Toshiki TAKEUCHI, Taichi OHTSUJI, Shoji NISHIMURA, Yasufumi HIRAKAWA
  • Publication number: 20220264308
    Abstract: A wireless terminal detection system provided with a radio wave identification unit that extracts identification information in accordance with the wireless terminals that are transmission sources; a radio wave intensity measurement unit that measures radio wave intensities of the radio waves; a distance estimation unit that estimates an attenuation rate of the radio wave intensities with respect to distance based on a number of the wireless terminals, and that estimates distances to the individual wireless terminals based on the estimated attenuation rate; and a notification unit that notifies a user that a suspicious wireless terminal has been detected if, based on the identification information, a wireless terminal among the radio wave transmission sources is determined to be registered as a suspicious wireless terminal, and the estimated distance to the wireless terminal among the radio wave transmission sources is not more than a prescribed distance.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 18, 2022
    Applicant: NEC Corporation
    Inventors: Jun SAKAI, Masaki KITSUNEZUKA, Taichi OHTSUJI, Toshiki TAKEUCHI, Shoji NISHIMURA, Yasufumi HIRAKAWA
  • Publication number: 20220144927
    Abstract: The present invention aims to provide a humanized antibody or an antigen-binding fragment thereof having stable physical property, superior in tumor accumulation, and capable of binding to mucin subtype 5AC. The above-mentioned problem is solved by the present invention that provides a humanized antibody or an antigen-binding fragment thereof having a heavy chain variable region consisting of the amino acid sequence shown in SEQ ID NO: 1-4 or a mutated amino acid sequence thereof, and a light chain variable region consisting of the amino acid sequence shown in SEQ ID NO: 5-8 or a mutated amino acid sequence thereof, and capable of binding to mucin subtype 5AC.
    Type: Application
    Filed: October 16, 2020
    Publication date: May 12, 2022
    Applicant: Sumitomo Dainippon Pharma Co., Ltd.
    Inventors: Mitsuhiro MATONO, Jun SAKAI, Toru NAGAI, Naoki TANUMA, Richard BUICK
  • Patent number: 11249009
    Abstract: Provided are a diagnostic device and the like for easily diagnosing the condition of the interior of a pipeline. This diagnostic device is provided with: a frictional loss calculating unit which, on the basis of the pressure of a fluid in the pipeline, finds a pressure frictional loss; and a diagnosing unit which diagnoses the condition of the inner surface of the pipeline on the basis of the frictional loss.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 15, 2022
    Assignee: NEC CORPORATION
    Inventor: Jun Sakai
  • Publication number: 20210386290
    Abstract: The blood flow analysis apparatus includes an acquisition unit and an extractor. The acquisition unit is configured to acquire blood flow information representing time-course changes in a blood flow velocity of a single retinal artery or retinal vein. The extractor is configured to extract one or more parameters corresponding to change in the blood flow velocity from the blood flow information.
    Type: Application
    Filed: May 13, 2021
    Publication date: December 16, 2021
    Applicants: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, Topcon Corporation
    Inventors: Akitoshi YOSHIDA, Kana MINAMIDE, Masahiro AKIBA, Jun SAKAI
  • Publication number: 20210356552
    Abstract: The present disclosure provides a mechanism for making it possible to efficiently determine an optimal configuration set for one or more sensors for use for estimating the state of an object. Information processing apparatus is provided, which includes an obtaining unit configured to obtain a spatial distribution model of accuracy of estimation related to a state of an object, performed using one or more sensors, a calculation unit configured to calculate a representative statistic for evaluating the accuracy of estimation based on the spatial distribution model obtained, and an optimization unit configured to determine an optimal set of sensor configurations for the one or more sensors based on representative statistics calculated respectively for different sets of sensor configurations for the one or more sensors.
    Type: Application
    Filed: October 8, 2019
    Publication date: November 18, 2021
    Applicant: NEC Corporation
    Inventor: Jun SAKAI
  • Publication number: 20210359775
    Abstract: A transmission apparatus recognition apparatus includes a receiver configured to receives a signal wirelessly transmitted from a transmission apparatus, a signal region detector, a feature extractor, and a recognizer. The signal region detector generates a spectrogram from a received signal received by the receiver, and detects a signal region parameter indicating a specific signal region based on the spectrogram. The feature extractor converts the received signal based on a signal conversion parameter according to the signal region parameter, and extracts a feature from the converted signal. The recognizer calculates a degree of similarity based on the extracted feature and a feature stored in advance, and recognizes the transmission apparatus based on the degree of similarity. The transmission apparatus recognition apparatus adjusts the signal region parameter based on a recognition accuracy of the recognizer.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Applicant: NEC Corporation
    Inventors: Taichi Ohtsuji, Jun Sakai
  • Publication number: 20210258742
    Abstract: An apparatus for estimating the number of people according to the present disclosure includes at least one memory configured to store an instruction and at least one processor configured to execute the instruction, the memory and the processor being configured to group signals of terminals acquired within a predetermined time, extract first identifiers of the terminals from the signals included in the group, classify the first identifiers into first identifiers assigned to a global network and those assigned to a local network, count the first identifiers assigned to the global network, and estimate the number of people by using the number of the first identifiers assigned to the global network.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 19, 2021
    Applicant: NEC Corporation
    Inventors: Jun SAKAI, Toshiki TAKEUCHI, Masao TANIGUCHI
  • Patent number: 11055858
    Abstract: A method measures a meandering amount of a strip, which is capable of reducing troubles. In the method of measuring a meandering amount of a strip during conveyance, an imaging means is arranged in one side of the strip at a state of tilting an optical axis thereof to a pass line plane of the strip and a light is arranged in the other side of the strip to irradiate light to the strip from the back of the strip viewing from the imaging means, and the strip is shot by the imaging means from an oblique side to include both edges of the strip and the edge of the strip is detected with an image shot by the imaging means and a meandering amount of the strip is calculated based on the detected edge position information of the strip from a standard position.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 6, 2021
    Assignee: JFE Steel Corporation
    Inventors: Jun Sakai, Toru Nakashima