Patents by Inventor Masahiro Nakazawa

Masahiro Nakazawa 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: 20240099069
    Abstract: A high-resolution display device is provided. A display device with both high display quality and high resolution is provided. The display device includes a first display element including a first pixel electrode, a first EL layer, and a common electrode; a second display element including a second pixel electrode, a second EL layer, and the common electrode; a first insulating layer covering an end portion of the first pixel electrode and an end portion of the second pixel electrode; a second insulating layer over the first insulating layer; and a third insulating layer over the second insulating layer. The first EL layer is placed over the first pixel electrode and the third insulating layer. The second EL layer is placed over the second pixel electrode and the third insulating layer.
    Type: Application
    Filed: February 7, 2022
    Publication date: March 21, 2024
    Inventors: Rai SATO, Masahiro KATAYAMA, Naoto GOTO, Yasutaka NAKAZAWA, Kenichi OKAZAKI
  • Patent number: 11936829
    Abstract: An illuminating device, an image reading device, and an image forming apparatus. The illuminating device includes a plurality of first light sources arrayed on a circuit board, the first light sources having a plurality of first light emitting surfaces through which light is emitted, and a second light source disposed on an upstream side of the first light sources in an irradiation direction of the light. In the illuminating device, the second light source has a second light emitting surface through which light is emitted, and the second light source has a directivity angle different from a directivity angle of each one of the first light sources. The image reading device includes the illuminating device, and an imaging device to receive the light reflected by a document to capture an image of the document.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: March 19, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Sugai, Masamoto Nakazawa, Masahiro Itoh
  • Patent number: 9410625
    Abstract: To provide a combined oil control ring with a function of preventing the separate rotation of side rails for a long period of time even under fretting fatigue, seating tabs of a spacer expander are provided with substantially longitudinal projections and recesses on their side-rail-pushing surfaces in a circumferential direction, the width m of a bottom surface being larger than the circumferential length m? of the top surface in each projection, and a surface connecting the top surface to a recess surface having a bulging shape.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: August 9, 2016
    Assignee: KABUSHIKI KAISHA RIKEN
    Inventors: Masahiro Nakazawa, Tadahiko Watanabe, Satoshi Koizumi
  • Publication number: 20140265149
    Abstract: To provide a combined oil control ring with a function of preventing the separate rotation of side rails for a long period of time even under fretting fatigue, seating tabs of a spacer expander are provided with substantially longitudinal projections and recesses on their side-rail-pushing surfaces in a circumferential direction, the width m of a bottom surface being larger than the circumferential length m? of the top surface in each projection, and a surface connecting the top surface to a recess surface having a bulging shape.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 18, 2014
    Applicant: KABUSHIKI KAISHA RIKEN
    Inventors: Masahiro Nakazawa, Tadahiko Watanabe, Satoshi Koizumi
  • Patent number: 7243596
    Abstract: In a combined oil ring having a spacer expander to be installed between a pair of upper and lower side rails, a plurality of axially protruding inner peripheral protruding portions are formed on the inner peripheral side of the spacer expander along its peripheral direction. The inner peripheral protruding portions press the inner peripheral surface of the side rails. On the outer peripheral side of the spacer expander, a plurality of slits are formed, and a plurality of connecting portions are located in the peripheral direction isolated by the slits. On the plurality of connecting portions, axially protruding outer peripheral protruding portions are formed.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: July 17, 2007
    Assignee: Kabushiki Kaisha Rikon
    Inventors: Miyuki Usui, Nobuo Katayama, Masahiro Nakazawa
  • Publication number: 20060169135
    Abstract: In a combined oil ring having a spacer expander to be installed between a pair of upper and lower side rails, a plurality of axially protruding inner peripheral protruding portions are formed on the inner peripheral side of the spacer expander along its peripheral direction. The inner peripheral protruding portions press the inner peripheral surface of the side rails. On the outer peripheral side of the spacer expander, a plurality of slits are formed, and a plurality of connecting portions are located in the peripheral direction isolated by the slits. On the plurality of connecting portions, axially protruding outer peripheral protruding portions are formed.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 3, 2006
    Inventors: Miyuki Usui, Nobuo Katayama, Masahiro Nakazawa
  • Publication number: 20040185744
    Abstract: In a method of manufacturing a color-separating electrode structure for color cathode ray tube, welding is performed by rolling a roller electrode with a rotation shaft being tilted so that an electrode surface of the roller electrode faces to an inside of a substantially rectangular frame, and by pressing a pressing roller to a portion defined as the portion of an outside of a contact portion in which an outer edge portion of an upper surface of the side of the frame is kept in contact with a rear surface of the color-separating electrode, both the roller electrodes and the pressing rollers being rolled together along the contact portion, whereby the color-separating electrode structure having sufficient welding strength can be obtained with higher stability.
    Type: Application
    Filed: December 19, 2003
    Publication date: September 23, 2004
    Inventors: Masahiro Nakazawa, Takeshi Tsukasaki, Shinichi Ooe, Yoshio Mizumoto
  • Publication number: 20040155568
    Abstract: A color selection mask is provided with an aperture region including a slit region (21) and bridge regions (22). The bridge regions (22) are provided on top and bottom ends of the aperture region. In the slit region (21), slits (123) through which electron beams pass and strips (124) are arranged alternately. The strips (124) extend into the bridge regions (22), where bridges (25) for connecting adjacent two of the strips (124) and through holes (122) through which electron beams pass are provided.
    Type: Application
    Filed: December 9, 2003
    Publication date: August 12, 2004
    Inventors: Yusuke Akiyama, Haruo Watanuki, Keizou Makino, Toshikazu Karita, Masahiro Nakazawa
  • Patent number: 5238721
    Abstract: A tile structure and method for applying tiles to the floor surface of offices, corridors and various rooms in which the surface of a floor to be tiled is covered with a sheet and peripheral side of tiles to be applied are surrounded with an elastic joint material. The tiles are applied side by side in sequence on the sheet with the elastic joint material forming a joint between adjacent tiles and in a compressed condition so as to prevent such applied tiles from moving each other. The sheet prevents the tiles from sliding along the floor surface.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: August 24, 1993
    Assignee: Kabushiki Kaisha PC Planning
    Inventor: Masahiro Nakazawa
  • Patent number: 4884837
    Abstract: Disclosed herein is a handle fitting structure for a packaging box for holding cakes, a potted plant, or the like. Namely, it represents a fitting structure of a handle to a box body for a packaging box formed by engaging the tips of a bandlike handle with the box body made of an elastic material such as corrugated fiberboard. The fitting structure is provided at each of the two opposite positions on side walls of the box body. The structure includes an insertion slit, with a breadth greater than the handle breadth, through which the tip of the handle is inserted and engaged therewith, an insertion guide provided protrusively from the end of the handle and serving as a guide at the time of insertion of the tip of the handle into the insertion slit, and an engaging part provided at the tip of the handle protruding in the direction opposite to the insertion guide, and engages with the side wall at the upper edge of the insertion slit at the time of insertion of the tip of the handle.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: December 5, 1989
    Assignee: Kabushiki Kaisha P C Planning
    Inventor: Masahiro Nakazawa
  • Patent number: 4170981
    Abstract: A burner of the air adjustment type using a liquid fuel includes a fuel chamber including a bottom wall, a peripheral side wall and at least one fuel gas opening on the top surface portion of the fuel chamber and a burner proper including a fuel chamber attachment, an inner gas chamber and a plurality of final gas openings arranged and distributed annularly on the ceiling wall of the gas chamber. The burner proper further includes variable air openings connected to the gas chamber, wherein an annular variable air passage surrounding the fuel chamber and being connected to the variable air openings at a position lower than the position of the fuel gas opening is formed between the inner face of the peripheral side wall of the gas chamber of the burner proper and the outer face of the peripheral side wall of the fuel chamber.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: October 16, 1979
    Assignee: Sky Bussan Kabushiki Kaisha
    Inventors: Yoshihisa Hakata, Masahiro Nakazawa