Patents by Inventor Masaaki Furukawa

Masaaki Furukawa 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: 11377959
    Abstract: A rotor blade includes a blade portion that extends in a spanwise direction from a hub portion to a tip portion and has a pressure-side surface and a suction-side surface, a blade portion is formed by profiles with airfoil shapes stacked in the spanwise direction, and a stacking line connecting gravity centers of the profiles at each spanwise position is a straight line parallel to a radial direction at a part from the hub portion to an outer end of a secondary flow region in a vicinity of the hub portion, and is a curved line, along which a distance measured from the straight line parallel to the radial direction toward a side of the suction-side surface gradually increases toward the tip portion, at a part from the outer end of the secondary flow region to the tip portion.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: July 5, 2022
    Assignee: IHI CORPORATION
    Inventors: Takuya Mitsukawa, Juo Furukawa, Masaaki Hamabe
  • Publication number: 20220197185
    Abstract: A toner cartridge includes: a casing having a first toner accommodating portion and a second toner accommodating portion; an agitator; an auger; a first protrusion positioned at one side in a first direction of the second toner accommodating portion; a second protrusion positioned at another side in the first direction of the second accommodating portion; a memory; and a toner-side electrical contact surface electrically connected to the memory. The toner cartridge is attachable to a drum cartridge by the casing pivotally moving from a first position to a second position relative to the drum cartridge about the first protrusion and the second protrusion. When the casing is at the first position, the toner-side electrical contact surface does not contact a first electrical contact surface of the drum cartridge. When the casing is at the second position, the toner-side electrical contact surface contacts the first electrical contact surface.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 23, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Naoya KAMIMURA, Hideshi NISHIYAMA, Masaaki FURUKAWA
  • Publication number: 20220179358
    Abstract: A process cartridge including a drum cartridge, a developing cartridge, and a waste toner container, is provided. The drum cartridge includes a photosensitive drum including a photosensitive layer and a rotation axis extending in an axial direction, a drum cleaner arranged to contact the photosensitive drum, a cleaner frame configured to accommodate the drum cleaner therein, and a waste toner conveyer tube connected with the cleaner frame. The developing cartridge is movable to be attached to and detached from the drum cartridge and includes a developer roller. The waste toner container is movable to be attached to and detached from the drum cartridge. When the developing cartridge and the waste toner container are attached to the drum cartridge, the waste toner container is connected with the waste toner conveyer tube and is located on an opposite side of the developing cartridge to the photosensitive drum.
    Type: Application
    Filed: February 25, 2022
    Publication date: June 9, 2022
    Inventors: Hideshi Nishiyama, Atsushi Fukaya, Aya Adachi, Ryosuke Hayashi, Masaaki Furukawa, Shougo Sato
  • Patent number: 11338242
    Abstract: Provided is a method for removing CO2 comprising: supplying a gas to be processed containing CO2, N2 and O2 to a feed side of a CO2/O2 selective permeation membrane within a temperature range of 15° C. to 50° C.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: May 24, 2022
    Assignees: Renaissance Energy Research Corporation, Japan Aerospace Exploration Agency
    Inventors: Osamu Okada, Masaaki Teramoto, Tamotsu Nonouchi, Nobuaki Hanai, Junya Miyata, Yasato Kiyohara, Masato Sakurai, Shinichi Furukawa
  • Publication number: 20220155706
    Abstract: A toner cartridge includes: a casing extending in a first direction; a toner conveying unit; a first cover; a shutter; a memory; and an electrical contact surface electrically connected to the memory. The casing includes a first toner accommodating portion having an opening. The first cover and the shutter are positioned at one end portion of the first toner accommodating portion in the first direction. The first cover has a discharge opening. The shutter has a shutter opening and a first protrusion extending in the first direction and positioned farther from the one end portion of the first toner accommodating portion than the first cover is in the first direction. When the toner cartridge is mounted to a developing device, the first protrusion is fixed in position relative to the developing device and the casing is pivotable together with the first cover relative to the developing device.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 19, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Hideshi NISHIYAMA
  • Publication number: 20220155720
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 19, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Patent number: 11333697
    Abstract: A three-dimensional surface potential distribution measurement system for measuring a surface potential of a measurement object comprises: a laser light source; a Pockels crystal exhibiting Pockels effect in which a refractive index changes depending on potential difference between the first end surface and the second end surface; a mirror disposed so as to be attached stationarily to the second end surface of the Pockels crystal; a photodetector to detect a light intensity of the laser light corresponding to the potential difference of the Pockels crystal; a housing that holds those elements; a three-dimensional motion-driver capable of three-dimensionally moving the housing; and a driving controller that controls the three-dimensional motion-driver.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 17, 2022
    Assignees: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Masaaki Furukawa, Tetsuo Yoshimitsu, Yuichi Tsuboi, Kunihiko Hidaka, Akiko Kumada, Hisatoshi Ikeda
  • Patent number: 11333999
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: May 17, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki Furukawa, Kazuma Hinoue, Ryosuke Hayashi, Naoya Kamimura
  • Patent number: 11316592
    Abstract: An optical module includes a photoelectric converter configured to receive an optical signal having an intensity that changes at one of a first frequency or a second frequency that is higher than the first frequency, and convert the optical signal into a current signal corresponding to the intensity of the optical signal; a signal processor configured to acquire, when the optical signal has the intensity that changes at the first frequency, wavelength information set on a transmitting side based on a ratio between a plurality of signal intensities included in the current signal relating to the optical signal having the intensity that changes at the first frequency; and a decoder configured to generate, when the optical signal has the intensity that changes at the second frequency, communication data from the current signal relating to the optical signal having the intensity that changes at the second frequency.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: April 26, 2022
    Assignee: Lumentum Japan, Inc.
    Inventors: Koki Sato, Masaaki Furukawa, Keiichi Murakami, Takuya Sato
  • Patent number: 11281155
    Abstract: A process cartridge including a drum cartridge, a developing cartridge, and a waste toner container, is provided. The drum cartridge includes a photosensitive drum including a photosensitive layer and a rotation axis extending in an axial direction, a drum cleaner arranged to contact the photosensitive drum, a cleaner frame configured to accommodate the drum cleaner therein, and a waste toner conveyer tube connected with the cleaner frame. The developing cartridge is movable to be attached to and detached from the drum cartridge and includes a developer roller. The waste toner container is movable to be attached to and detached from the drum cartridge. When the developing cartridge and the waste toner container are attached to the drum cartridge, the waste toner container is connected with the waste toner conveyer tube and is located on an opposite side of the developing cartridge to the photosensitive drum.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: March 22, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hideshi Nishiyama, Atsushi Fukaya, Aya Adachi, Ryosuke Hayashi, Masaaki Furukawa, Shougo Sato
  • Patent number: 11249438
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: February 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi Nakamura, Yasuo Fukamachi, Masaaki Furukawa
  • Publication number: 20220011719
    Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo FUKAMACHI, Kazutoshi NAKAMURA, Masaaki FURUKAWA
  • Publication number: 20220004139
    Abstract: An image forming apparatus includes: a casing having an opening; a developing cartridge configured to accommodate toner therein; and a drum cartridge to which the developing cartridge is attachable. The drum cartridge is attachable to the casing through the opening in a state where the developing cartridge is attached to the drum cartridge. The drum cartridge includes: a photosensitive drum; a drum frame; a charge roller; a cleaning blade configured to clean a circumferential surface of the photosensitive drum; a waste toner collecting unit having an internal space allowing waste toner removed from the circumferential surface of the photosensitive drum by the cleaning blade to be collected therein; a waste toner accumulating unit having an internal space allowing the waste toner to be accumulated therein; and a waste toner conveying unit configured to convey the waste toner from the waste toner collecting unit to the waste toner accumulating unit.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 6, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Takashi SHIMIZU, Shinya KUSUDA, Tomitake ARATACHI, Yasuo FUKAMACHI, Keita SHIMIZU, Kazutoshi NAKAMURA, Kouichi SUGIMOTO
  • Publication number: 20210167862
    Abstract: An optical module includes a photoelectric converter configured to receive an optical signal having an intensity that changes at one of a first frequency or a second frequency that is higher than the first frequency, and convert the optical signal into a current signal corresponding to the intensity of the optical signal; a signal processor configured to acquire, when the optical signal has the intensity that changes at the first frequency, wavelength information set on a transmitting side based on a ratio between a plurality of signal intensities included in the current signal relating to the optical signal having the intensity that changes at the first frequency; and a decoder configured to generate, when the optical signal has the intensity that changes at the second frequency, communication data from the current signal relating to the optical signal having the intensity that changes at the second frequency.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Inventors: Koki SATO, Masaaki FURUKAWA, Keiichi MURAKAMI, Takuya SATO
  • Patent number: 11013279
    Abstract: A fastener for a wig having two approximately U-shape members, each configured of a comb teeth fixed piece, and two curved elastic leg portions which extend from both ends of the comb teeth fixed piece. The two approximately U-shape members are connected to each other at a plurality of connecting points located away from each other in a direction that each of the curved elastic leg portions extends under the condition that opening portions of the approximately U-shape members face each other and the curved elastic leg portions are overlapped each other. Accordingly, both members have both a high elastic deformation capability and a high integrity. Therefore, during the operation such that the fastener for a wig are reversed by fingers, if one of the approximately U-shape members is reversed, the other approximately U-shape member is always reversed at the same time, one reversing operation is always enough.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: May 25, 2021
    Assignees: ADERANS COMPANY LIMITED, KAWAKITA INC.
    Inventors: Masaaki Furukawa, Yoshihiro Tsumura, Yukitomo Kawakita, Yasuhiro Kawakita
  • Publication number: 20210149325
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Application
    Filed: January 26, 2021
    Publication date: May 20, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Kazuma HINOUE, Ryosuke HAYASHI, Naoya KAMIMURA
  • Publication number: 20210088962
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: December 10, 2020
    Publication date: March 25, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Patent number: 10944479
    Abstract: An optical module includes a photoelectric converter configured to receive an optical signal having an intensity that changes at one of a first frequency or a second frequency that is higher than the first frequency, and convert the optical signal into a current signal corresponding to the intensity of the optical signal; a signal processor configured to acquire, when the optical signal has the intensity that changes at the first frequency, wavelength information set on a transmitting side based on a ratio between a plurality of signal intensities included in the current signal relating to the optical signal having the intensity that changes at the first frequency; and a decoder configured to generate, when the optical signal has the intensity that changes at the second frequency, communication data from the current signal relating to the optical signal having the intensity that changes at the second frequency.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 9, 2021
    Assignee: Lumentum Japan, Inc.
    Inventors: Koki Sato, Masaaki Furukawa, Keiichi Murakami, Takuya Sato
  • Patent number: 10908533
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: February 2, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki Furukawa, Kazuma Hinoue, Ryosuke Hayashi, Naoya Kamimura
  • Publication number: 20210026294
    Abstract: A process cartridge including a drum cartridge, a developing cartridge, and a waste toner container, is provided. The drum cartridge includes a photosensitive drum including a photosensitive layer and a rotation axis extending in an axial direction, a drum cleaner arranged to contact the photosensitive drum, a cleaner frame configured to accommodate the drum cleaner therein, and a waste toner conveyer tube connected with the cleaner frame. The developing cartridge is movable to be attached to and detached from the drum cartridge and includes a developer roller. The waste toner container is movable to be attached to and detached from the drum cartridge. When the developing cartridge and the waste toner container are attached to the drum cartridge, the waste toner container is connected with the waste toner conveyer tube and is located on an opposite side of the developing cartridge to the photosensitive drum.
    Type: Application
    Filed: October 12, 2020
    Publication date: January 28, 2021
    Inventors: Hideshi Nishiyama, Atsushi Fukaya, Aya Adachi, Ryosuke Hayashi, Masaaki Furukawa, Shougo Sato