Patents by Inventor Kei FUKUHARA

Kei FUKUHARA 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: 20240079427
    Abstract: Provided is an imaging apparatus capable of enhancing heat resistance of a color filter and a manufacturing method of the imaging apparatus. An imaging apparatus includes a semiconductor substrate, a color filter provided on one surface side of the semiconductor substrate, and a first sealing material provided on the one surface side, the first sealing material that covers the color filter. The first sealing material includes a material capable of transmitting light of a wavelength band set in advance and having a thermal conductivity of 0.5 W/m·K or less.
    Type: Application
    Filed: November 11, 2021
    Publication date: March 7, 2024
    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Kei FUKUHARA
  • Publication number: 20230318443
    Abstract: A power supply apparatus (100) according to the present disclosure converts an input voltage supplied from a power source to a predetermined direct current voltage. The power supply apparatus (100) includes an inrush current prevention circuit (120) based on a buck converter system and configured to suppress a flow of inrush current from the power source to the power supply apparatus (100) and a boost converter circuit (130) configured to output the predetermined direct current voltage. A choke coil (104) included in the inrush current prevention circuit (120) and a choke coil (104) included in the boost converter circuit (130) are a common choke coil. A smoothing capacitor (107) included in the inrush current prevention circuit (120) and a smoothing capacitor (107) included in the boost converter circuit (130) are a common smoothing capacitor.
    Type: Application
    Filed: February 13, 2023
    Publication date: October 5, 2023
    Inventors: Naoya Aso, Kei Fukuhara, Masahiko Suzuki, Iwao Nakanishi
  • Patent number: 11569735
    Abstract: A power supply system includes at least two power supply devices that supply a current to a load. Each of the at least two power supply devices includes a converter configured to generate a current that is to be supplied to the load, an FET that is connected in series between the converter and the load, a gate voltage monitoring circuit configured to monitor whether a gate voltage of the FET has fallen below a predetermined first reference voltage, and an alarm generation circuit configured to generate an alarm according to a result of monitoring by the gate voltage monitoring circuit.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: January 31, 2023
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yuusuke Shimizu, Kei Fukuhara, Iwao Nakanishi
  • Patent number: 11480876
    Abstract: Provided are a photosensitive resin composition in which warping of a cured film after curing is decreased and lithographic properties in a case of forming a pattern are excellent, a cured film, a laminate, a method for producing a cured film, and a semiconductor device. The photosensitive resin composition includes a polyimide precursor including a repeating unit including a biphenyl structure and a photopolymerization initiator having an oxime structure capable of generating an aryl radical by being irradiated with light.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: October 25, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Kei Fukuhara, Yu Iwai
  • Publication number: 20220320996
    Abstract: A power supply system includes at least two power supply devices that supply a current to a load. Each of the at least two power supply devices includes a converter configured to generate a current that is to be supplied to the load, an FET that is connected in series between the converter and the load, a gate voltage monitoring circuit configured to monitor whether a gate voltage of the FET has fallen below a predetermined first reference voltage, and an alarm generation circuit configured to generate an alarm according to a result of monitoring by the gate voltage monitoring circuit.
    Type: Application
    Filed: March 22, 2022
    Publication date: October 6, 2022
    Applicant: Yokogawa Electric Corporation
    Inventors: Yuusuke Shimizu, Kei Fukuhara, Iwao Nakanishi
  • Patent number: 10992131
    Abstract: A power supply system includes at least two power supply apparatuses that supply current to one load. Each power supply apparatus includes a converter that supplies current to the load, a FET connected in series between the converter and the load, a current detection unit that detects current flowing between the converter and the load, and a droop characteristic controller that causes output voltage of the converter to droop at a droop rate determined based on the magnitude of load current flowing from the converter towards the load. The droop rate is greater when the load current is included in a first current section than when the load current is included in each of a second current section and a third current section. The second current section includes smaller current than the first current section. The third current section includes larger current than the first current section.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 27, 2021
    Assignee: Yokogawa Electric Corporation
    Inventors: Kei Fukuhara, Iwao Nakanishi
  • Publication number: 20200303922
    Abstract: A power supply system includes at least two power supply apparatuses that supply current to one load. Each power supply apparatus includes a converter that supplies current to the load, a FET connected in series between the converter and the load, a current detection unit that detects current flowing between the converter and the load, and a droop characteristic controller that causes output voltage of the converter to droop at a droop rate determined based on the magnitude of load current flowing from the converter towards the load. The droop rate is greater when the load current is included in a first current section than when the load current is included in each of a second current section and a third current section. The second current section includes smaller current than the first current section. The third current section includes larger current than the first current section.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 24, 2020
    Applicant: Yokogawa Electric Corporation
    Inventors: Kei FUKUHARA, Iwao NAKANISHI
  • Publication number: 20200019057
    Abstract: Provided are a photosensitive resin composition in which warping of a cured film after curing is decreased and lithographic properties in a case of forming a pattern are excellent, a cured film, a laminate, a method for producing a cured film, and a semiconductor device. The photosensitive resin composition includes a polyimide precursor including a repeating unit including a biphenyl structure and a photopolymerization initiator having an oxime structure capable of generating an aryl radical by being irradiated with light.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Kei FUKUHARA, Yu Iwai
  • Patent number: 10414951
    Abstract: Provided are a temporary bonding material which is less likely to cause film unevenness and void formation while maintaining an adhesive force required for temporary bonding of a carrier substrate and a base material, and is easily peelable, a laminate, a method for manufacturing a laminate, a method for manufacturing a device substrate, and a method for manufacturing a semiconductor device. A temporary bonding material of the present invention includes a thermoplastic resin, a compound having a Si—O structure in an amount of 0.001% by mass or more and less than 8% by mass of the thermoplastic resin, and a solvent, in which an adhesive force of the temporary bonding material of an adhesive in which the solvent is removed from the temporary bonding material with respect to a silicon wafer is 1 to 15 N/m.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: September 17, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Kei Fukuhara, Yoshitaka Kamochi, Mitsuru Sawano
  • Publication number: 20180215965
    Abstract: Provided are a temporary bonding material which is less likely to cause film unevenness and void formation while maintaining an adhesive force required for temporary bonding of a carrier substrate and a base material, and is easily peelable, a laminate, a method for manufacturing a laminate, a method for manufacturing a device substrate, and a method for manufacturing a semiconductor device. A temporary bonding material of the present invention includes a thermoplastic resin, a compound having a Si—O structure in an amount of 0.001% by mass or more and less than 8% by mass of the thermoplastic resin, and a solvent, in which an adhesive force of the temporary bonding material of an adhesive in which the solvent is removed from the temporary bonding material with respect to a silicon wafer is 1 to 15 N/m.
    Type: Application
    Filed: March 22, 2018
    Publication date: August 2, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Kei FUKUHARA, Yoshitaka KAMOCHI, Mitsuru SAWANO