Patents by Inventor Atsushi Ozawa

Atsushi Ozawa 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: 20240150555
    Abstract: Provided are: a rubber composite in which cellulose nanofibers are well-dispersed in rubber and which has favorable characteristics (in particular, storage modulus, etc.) that make it possible to form a vulcanized rubber product having an excellent elastic modulus, excellent wear resistance, etc.; and a cellulose nanofiber-containing composition from which said rubber composite can be formed. Provided is a composition containing cellulose nanofibers and a nonionic surfactant, wherein the nonionic surfactant has, as a hydrophobic moiety, a group that has 6-30 carbon atoms and is an aliphatic or aromatic or a combination thereof.
    Type: Application
    Filed: February 21, 2022
    Publication date: May 9, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Atsushi Bamba, Kazufumi Kawahara, Ryosuke Ozawa
  • Publication number: 20240124690
    Abstract: The present invention provides a rubber composition in which cellulose nanofibers are satisfactorily dispersed in a rubber and which can form molded objects excellent in terms of elastic modulus, wear resistance, etc. This rubber composition comprises cellulose nanofibers, a first rubber component, which is a liquid rubber, and a surfactant. In one embodiment, the cellulose nanofibers contain no ionic groups. In one embodiment, the liquid rubber has a number-average molecular weight of 1,000-80,000.
    Type: Application
    Filed: February 21, 2022
    Publication date: April 18, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Ryosuke Ozawa, Kazufumi Kawahara, Atsushi Bamba
  • Publication number: 20240094646
    Abstract: An exposure apparatus includes a droplet supplier to supply a target droplet inside a vacuum chamber, an irradiator irradiating a pulsed laser onto the target droplet, a condensing mirror installed inside the vacuum chamber and configured to condense a light emitted from the target droplet by irradiation of the pulsed laser onto the target droplet, a gas supplier to flow a hydrogen gas along a surface of the condensing mirror, a controller to change a supply condition of the target droplet and an irradiation condition of the pulsed laser to conditions different from conditions during an exposure operation to increase an amount of production of hydrogen radicals in the vacuum chamber, and an exhaust pump to exhaust a gas from an inside of the vacuum chamber.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 21, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Katsunobu NISHIHARA, Nozomi TANAKA, Tomoyuki JOHZAKI, Ken OZAWA, Atsushi SUNAHARA, Shinji UEYAMA, Shinsuke FUJIOKA, Yubo WANG
  • Patent number: 11910504
    Abstract: There is provided a rear sign lamp capable of enhancing safety. An LED string (502) includes four LEDs (504_1 to 504_4) connected in series. An LED driver circuit (610) receives a battery voltage (VIN) and supplies a drive current (ILED) stabilized at a target current (IREF) to the LED string (502). A bypass circuit (620) is provided in parallel with a bypassed portion (503) including two adjacent LEDs (504_3 and 504_4) of the LED string (502), and sinks a bypass current (IBYPASS) according to a battery voltage (VIN).
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: February 20, 2024
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki Ichikawa, Atsushi Ozawa, Mariko Miwa, Yutaka Matsumoto
  • Patent number: 11906123
    Abstract: A light source module is switchable between a high beam and a low beam, and is mounted on a vehicle. A first light source is arranged such that its output light is irradiated to a low-beam region by a first optical system. A second light source is arranged such that its output light is irradiated to a high-beam region by a second optical system. A lighting circuit supplies a driving current to the first light source in response to a turn-on instruction for either the high beam or the low beam. Furthermore, the lighting circuit supplies the output current to the second light source in response to a turn-on instruction for the high beam.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: February 20, 2024
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki Ichikawa, Norikazu Saito, Atsushi Ozawa
  • Publication number: 20240019102
    Abstract: A socket housing having an engaging portion that is engaged with a predetermined member; a substrate having a base plate formed by a resin material and a wiring pattern formed in at least a surface on one side, in a thickness direction, of the base plate; a light-emitting element that is connected to the wiring pattern; an annular frame that is formed on the substrate and covers the light-emitting element; a sealing resin that is packed inside the frame and seals the light-emitting element; and an electronic component joined to a land that is formed on an outer circumferential side of the frame. The frame is formed as a resin material having fluidity applied to the substrate is hardened. A clearance between the frame and the land or a clearance between the frame and the electronic component, whichever is smaller, is set to be 0.1 mm or larger.
    Type: Application
    Filed: November 26, 2021
    Publication date: January 18, 2024
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Atsushi OZAWA, Tomoyuki NAKAGAWA, Toru ITO, Tetsuya SUZUKI
  • Patent number: 11809124
    Abstract: A cleaning unit is attachable to and detachable from a main body of an image forming apparatus including a photosensitive drum and a belt configured to contact the photosensitive drum. The cleaning unit includes: a frame; and a handle. The frame is configured to accommodate therein developing agent collected from the image forming apparatus. The handle includes: a pair of first parts; and a second part. Each of the pair of first parts extends from the frame in an extending direction perpendicular to an axial direction of the photosensitive drum in a state where the cleaning unit is attached to the main body. The pair of first parts includes a lock mechanism for locking the cleaning unit to the main body. The second part extends in the axial direction and connects the pair of first parts to each other.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: November 7, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Atsushi Ozawa, Yohei Hashimoto, Hikaru Iino
  • Publication number: 20230213885
    Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second positon and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.
    Type: Application
    Filed: March 10, 2023
    Publication date: July 6, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Daisuke Ishizuka, Atsushi Ozawa, Hideshi Nishiyama
  • Patent number: 11635726
    Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second position and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: April 25, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Daisuke Ishizuka, Atsushi Ozawa, Hideshi Nishiyama
  • Publication number: 20230112753
    Abstract: There is provided a rear sign lamp capable of enhancing safety. An LED string (502) includes four LEDs (504_1 to 504_4) connected in series. An LED driver circuit (610) receives a battery voltage (VIN) and supplies a drive current (ILED) stabilized at a target current (IREF) to the LED string (502). A bypass circuit (620) is provided in parallel with a bypassed portion (503) including two adjacent LEDs (504_3 and 504_4) of the LED string (502), and sinks a bypass current (IBYPASS) according to a battery voltage (VIN).
    Type: Application
    Filed: March 10, 2021
    Publication date: April 13, 2023
    Inventors: Tomoyuki ICHIKAWA, Atsushi OZAWA, Mariko MIWA, Yutaka MATSUMOTO
  • Publication number: 20230104593
    Abstract: A first light emitting unit includes M (M?2) first light emitting elements provided in series. A second light emitting unit including N (N<M) second light emitting elements and a switching transistor are provided on a path parallel to the first light emitting unit. A constant-current driver is connected in series to both the first light emitting unit and the second light emitting unit, and generates a drive current. A drive circuit includes a capacitor provided between a gate and a drain of the switching transistor, and causes the gate of the switching transistor to generate a drive signal according to a switching signal.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Toru ITO, Atsushi OZAWA
  • Publication number: 20230104439
    Abstract: An LED string includes a plurality of LEDs connected in series, and is divided into a first portion, a second portion, and a third portion. An LED driver circuit receives a power supply voltage according to a battery voltage, and supplies a drive current stabilized at a target current to the LED string. A first bypass circuit is provided in parallel to the first portion and generates a bypass current having a current amount according to the power supply voltage. A second bypass circuit includes a bypass switch provided in parallel to the first portion and the second portion.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Ryota FUWA, Atsushi OZAWA
  • Publication number: 20230019114
    Abstract: Provided is an electric storage device including: an electric storage unit; a temperature measurement unit that detects the temperature of the electric storage unit; a current measurement unit that measures the charge/discharge current of the electric storage unit; and a safety evaluation unit that calculates the safety evaluation value of the electric storage unit, where the safety evaluation unit determines a temperature range to which the temperature detected by the temperature measurement unit belongs among multiple temperature ranges, and calculates a safety evaluation value, based on the temperature range as a result of the determination and an accumulated value of a value related to the charge/discharge time of the electric storage unit.
    Type: Application
    Filed: September 23, 2022
    Publication date: January 19, 2023
    Inventors: Fumihito KOMAKINE, Yosuke YAMADA, Shinichi UESAKA, Atsushi OZAWA
  • Publication number: 20220413428
    Abstract: A cleaning unit is attachable to and detachable from a main body of an image forming apparatus including a photosensitive drum and a belt configured to contact the photosensitive drum. The cleaning unit includes: a frame; and a handle. The frame is configured to accommodate therein developing agent collected from the image forming apparatus. The handle includes: a pair of first parts; and a second part. Each of the pair of first parts extends from the frame in an extending direction perpendicular to an axial direction of the photosensitive drum in a state where the cleaning unit is attached to the main body. The pair of first parts includes a lock mechanism for locking the cleaning unit to the main body. The second part extends in the axial direction and connects the pair of first parts to each other.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 29, 2022
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Atsushi OZAWA, Yohei HASHIMOTO, Hikaru IINO
  • Publication number: 20220353966
    Abstract: An automotive lamp includes a temperature-sensing element having an electrical state that changes according to the temperature T of a semiconductor light source, and a constant current driver that generates a driving current ILED that corresponds to the temperature T. The maximum value of the temperature differential of the driving current ILED in a first temperature range from a reference temperature T0 to a first temperature T1 (T1>T0) is smaller than the maximum value of the temperature differential of the driving current ILED in a second temperature range from the first temperature T1 to a second temperature T2 (T2>T1).
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Toru ITO, Atsushi OZAWA
  • Publication number: 20220154905
    Abstract: A light source module is switchable between a high beam and a low beam, and is mounted on a vehicle. A first light source is arranged such that its output light is irradiated to a low-beam region by a first optical system. A second light source is arranged such that its output light is irradiated to a high-beam region by a second optical system. A lighting circuit supplies a driving current to the first light source in response to a turn-on instruction for either the high beam or the low beam. Furthermore, the lighting circuit supplies the output current to the second light source in response to a turn-on instruction for the high beam.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 19, 2022
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Norikazu SAITO, Atsushi OZAWA
  • Publication number: 20210410248
    Abstract: A semiconductor light source and a constant current circuit are arranged in series between an input terminal and a ground terminal. When an input voltage at the input terminal exceeds a predetermined threshold voltage, a load dump circuit cuts off or reduces a current that flows through the constant current circuit.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Tetsuya SUZUKI, Atsushi OZAWA, Toru ITO
  • Publication number: 20210240129
    Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second positon and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Daisuke ISHIZUKA, Atsushi OZAWA, Hideshi NISHIYAMA
  • Patent number: 11003128
    Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second position and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: May 11, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Daisuke Ishizuka, Atsushi Ozawa, Hideshi Nishiyama
  • Publication number: 20200285190
    Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second position and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.
    Type: Application
    Filed: February 5, 2020
    Publication date: September 10, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Daisuke ISHIZUKA, Atsushi OZAWA, Hideshi NISHIYAMA