Patents by Inventor Masamichi Yamada

Masamichi Yamada 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: 11892118
    Abstract: A display stand includes a stand unit having posts and a mounting mechanism; and a mounting bracket on a back surface of a display. The mounting bracket includes first, second, and third fixing members extending from the back surface of the display, the mounting mechanism includes a mounting plate forming at least a part of a transverse plate that connects between the posts, the mounting plate including a straight rail part having a straight slot and a bent rail part having a bent slot that is bent at a substantially right angle. The first fixing member engages with the straight rail part and is linearly movable when the display rotates, and the second fixing member and the third fixing member each engage with the bent rail part and are movable along straight portions of the bent rail part when the display rotates.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: February 6, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masamichi Yamada
  • Publication number: 20230410381
    Abstract: A Zen facilitation system includes: a first storage part storing a plurality of avatars corresponding to a plurality of members belonging to a group performing Zen; a second storage part storing at least one virtual Zen space; at least one input receiving part receiving an input from each of the members; a display image generation part generating a Zen action image in which some of the plurality of avatars perform Zen in the Zen space in accordance with an input regarding a Zen action through the input receiving part; and a display part displaying a Zen action image generated in the display image generation part.
    Type: Application
    Filed: September 30, 2020
    Publication date: December 21, 2023
    Applicant: ITOKI CORPORTAION
    Inventors: Masamichi YAMADA, Thierry Georges PORTE, Frederick Katsuro SCHMIDT
  • Patent number: 11779593
    Abstract: Provided is an agent for improving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: October 10, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Publication number: 20230280592
    Abstract: A light guide member (300) includes a boundary surface (304) configured to reflect image light guided to the boundary surface (304) and emit the image light outside the light guide member (300), an opposing surface (306) parallel to the boundary surface (304), the opposing surface (306) facing the boundary surface (304), a first inclined surface (305) having an inclination in which a distance between the first inclined surface (305) and the boundary surface (304) decreases in a guiding direction of the image light, and a second inclined surface (307) between the opposing surface (306) and the first inclined surface (305), the second inclined surface (307) inclined at a different angle with the first inclined surface (305) in the guiding direction.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 7, 2023
    Inventors: Naoki NAKAMURA, Masahiro ITOH, Susumu MOMMA, Shigenobu HIRANO, Yoshifumi SUDOH, Shun OKAZAKI, Yasuo KATANO, Kenji KAMEYAMA, Norikazu IGARASHI, Masamichi YAMADA, Aino HASEGAWA, Takashi MAKI
  • Patent number: 11746947
    Abstract: A stand for supporting a display device includes multiple posts and a mounting plate module configured to connect the posts to each other. The stand is configured such that a rotary unit is attachable to and detachable from the mounting plate module, the display device is attachable to the mounting plate module via the rotary unit and is also attachable to the mounting plate module without the rotary unit, and a position of the display device relative to the stand in a depth direction in a state where the display device is attached to the mounting plate module via the rotary unit is the same as the position of the display device relative to the stand in the depth direction in a state where the display device is attached to the mounting plate module without the rotary unit.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: September 5, 2023
    Assignee: Ricoh Company, Ltd.
    Inventor: Masamichi Yamada
  • Publication number: 20220395093
    Abstract: A display stand includes a stand unit having posts and a mounting mechanism; and a mounting bracket on a back surface of a display. The mounting bracket includes first, second, and third fixing members extending from the back surface of the display, the mounting mechanism includes a mounting plate forming at least a part of a transverse plate that connects between the posts, the mounting plate including a straight rail part having a straight slot and a bent rail part having a bent slot that is bent at a substantially right angle. The first fixing member engages with the straight rail part and is linearly movable when the display rotates, and the second fixing member and the third fixing member each engage with the bent rail part and are movable along straight portions of the bent rail part when the display rotates.
    Type: Application
    Filed: February 13, 2020
    Publication date: December 15, 2022
    Inventor: Masamichi YAMADA
  • Patent number: 11421815
    Abstract: A stand for suspending a display device includes a stand mechanism including supporting posts and a mounting plate connecting between the supporting posts; and a rotating unit configured to change orientation of the display device between a landscape orientation and a portrait orientation without detaching the display device, wherein the rotating unit includes a rotating unit fixed part fixed to the stand mechanism, and a rotating unit moving part fixed to a rear surface of the display device and configured to move together with the display device, wherein the rotating unit fixed part includes a fixing plate having two or more holes, a large spacer having two or more holes, and two or more small spacers each having one hole, and wherein the rotating unit moving part includes a sliding planar part having two or more holes.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: August 23, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masamichi Yamada
  • Publication number: 20220252838
    Abstract: A lens unit includes: a lens group including: an object-side lens closest to an object side in the lens group; an image-side lens closest to an image side in the lens group; and an intermediate lens between the object-side lens and the image-side lens, the object-side lens, the image-side lens, and the intermediate lens being arranged along an optical axis; a first holder holding an edge surface of the object-side lens and an edge surface of the intermediate lens; and a second holder separate from the first holder, the second holder holding the edge surface of the intermediate lens and an edge surface of the image-side lens.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 11, 2022
    Inventors: Yoshifumi SUDOH, Yasuo KATANO, Shigenobu HIRANO, Masahiro ITOH, Naoki NAKAMURA, Susumu MOMMA, Shun OKAZAKI, Masamichi YAMADA, Kenji KAMEYAMA, Norikazu IGARASHI, Aino HASEGAWA, Takashi MAKI
  • Publication number: 20220105125
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 7, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi YAMADA, Chiyo SAKENAGA, Keiichiro ARAI, Kazutaka YAMAMOTO
  • Publication number: 20220026716
    Abstract: A propagation optical system includes: a first optical system; an intermediate optical element; and a second optical system. The first optical system, the intermediate optical element, and the second optical system being sequentially arranged in a direction from the image display element toward the light guide member along an optical axis. The intermediate optical element has a non-rotationally symmetric curved surface, of which shape is non-rotationally symmetric about the optical axis. A cross-sectional shape, of the non-rotationally symmetric curved surface, in a first plane including the optical axis is non-arc shape. The first plane is a plane in which the non-rotationally symmetric surface has a strongest positive power among planes including the optical axis. The propagation optical system is configured to form, between the first optical system and the second optical system, an intermediate image corresponding to an image displayed on the image display element.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 27, 2022
    Inventors: Yoshifumi SUDOH, Naoki NAKAMURA, Masahiro ITOH, Susumu MOMMA, Shun OKAZAKI, Shigenobu HIRANO, Yasuo KATANO, Kenji KAMEYAMA, Norikazu IGARASHI, Aino HASEGAWA, Takashi MAKI, Masamichi YAMADA, Takemasa TSUTSUI
  • Patent number: 11185558
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: November 30, 2021
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Patent number: 11147831
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: October 19, 2021
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Publication number: 20210247018
    Abstract: A stand for suspending a display device includes a stand mechanism including supporting posts and a mounting plate connecting between the supporting posts; and a rotating unit configured to change orientation of the display device between a landscape orientation and a portrait orientation without detaching the display device, wherein the rotating unit includes a rotating unit fixed part fixed to the stand mechanism, and a rotating unit moving part fixed to a rear surface of the display device and configured to move together with the display device, wherein the rotating unit fixed part includes a fixing plate having two or more holes, a large spacer having two or more holes, and two or more small spacers each having one hole, and wherein the rotating unit moving part includes a sliding planar part having two or more holes.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Inventor: Masamichi YAMADA
  • Publication number: 20210247015
    Abstract: A stand for supporting a display device includes multiple posts and a mounting plate module configured to connect the posts to each other. The stand is configured such that a rotary unit is attachable to and detachable from the mounting plate module, the display device is attachable to the mounting plate module via the rotary unit and is also attachable to the mounting plate module without the rotary unit, and a position of the display device relative to the stand in a depth direction in a state where the display device is attached to the mounting plate module via the rotary unit is the same as the position of the display device relative to the stand in the depth direction in a state where the display device is attached to the mounting plate module without the rotary unit.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 12, 2021
    Applicant: Ricoh Company, Ltd.
    Inventor: Masamichi YAMADA
  • Publication number: 20200338113
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 29, 2020
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi YAMADA, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Publication number: 20200330503
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Publication number: 20190302584
    Abstract: An image projection apparatus includes an image displayer on which an image is formed; an illuminator configured to illuminate the image displayer; and an optical projector configured to project the image formed on the image displayer. A plurality of spacers having different thicknesses from each other is disposed between the illuminator and the image displayer or between the illuminator and the optical projector. Each of the plurality of spacers having a different thickness is configured to have a greater thickness as a size is larger, or to have a greater thickness as the size is smaller, the size being a size of a surface perpendicular to a thickness direction of each of the plurality of spacers.
    Type: Application
    Filed: March 14, 2019
    Publication date: October 3, 2019
    Applicant: Ricoh Company, Ltd.
    Inventor: Masamichi YAMADA
  • Patent number: 10225531
    Abstract: An image display unit includes a first unit fixed to a receiving frame, a second unit, movably supported by the first unit, including an image generator to generate an image when light enters the image generator, and a first link unit to supportingly fix the first unit to the receiving frame, and a space between the first unit and the receiving frame adjustable by the first link unit.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: March 5, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masamichi Yamada, Yoshito Saito, Akihisa Mikawa
  • Patent number: 10197894
    Abstract: An image generation device includes an image generator, a stationary unit, a movable unit, and a dustproof unit. The image generator receives light and generate an image. The stationary unit includes a first stationary plate and a second stationary plate opposed to the first stationary plate. The movable unit includes a movable plate movably supported between the first stationary plate and the second stationary plate, the image generator mounted on the movable plate. The dustproof unit includes a dustproof member between the first stationary plate and the movable plate. The dustproof member surrounds the image generator.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: February 5, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masamichi Yamada
  • Patent number: 10012893
    Abstract: An image projection apparatus includes a light source, light from which is used to form an image to be projected, a first flow path, a control unit configured to control a light emission from the light source, an electrical power stabilizing unit configured to stabilize an electrical power to be supplied to the light source, and an electrical power source unit configured to supply the electrical power to at least one of the control unit and the electrical power stabilizing unit. One or both of the electrical power source unit and the electrical power stabilizing unit is/are divided into a plurality of boards. The light source is arranged on a normal line of a surface of any of the plurality of boards. The plurality of boards configure surfaces of the first flow path except a surface nearest to the light source.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: July 3, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai