Patents by Inventor Akemi Maruyama

Akemi Maruyama 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).

  • Illumination system, electro-optic device, and electronic apparatus
    Patent number: 8833957
    Abstract: An illumination system includes a light source unit including a light source and a circuit substrate electrically connected to the light source. The light source is placed in the circuit substrate such that at least part of the light source overlaps the circuit substrate in the thicknesswise direction of the circuit substrate.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: September 16, 2014
    Assignee: Epson Imaging Devices Corporation
    Inventors: Junya Mita, Yoshinori Momose, Akemi Maruyama, Shintaro Hama
  • ILLUMINATION SYSTEM, ELECTRO-OPTIC DEVICE, AND ELECTRONIC APPARATUS
    Publication number: 20120081895
    Abstract: An illumination system includes a light source unit including a light source and a circuit substrate electrically connected to the light source. The light source is placed in the circuit substrate such that at least part of the light source overlaps the circuit substrate in the thicknesswise direction of the circuit substrate.
    Type: Application
    Filed: December 8, 2011
    Publication date: April 5, 2012
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Junya MITA, Yoshinori MOMOSE, Akemi MARUYAMA, Shintaro HAMA
  • Illumination system, electro-optic device, and electronic apparatus
    Patent number: 8083372
    Abstract: An illumination system includes a light source unit including a light source and a circuit substrate electrically connected to the light source. The light source is placed in the circuit substrate such that at least part of the light source overlaps the circuit substrate in the thicknesswise direction of the circuit substrate.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: December 27, 2011
    Assignee: Epson Imaging Devices Corporation
    Inventors: Junya Mita, Yoshinori Momose, Akemi Maruyama, Shintaro Hama
  • ILLUMINATION SYSTEM, ELECTRO-OPTIC DEVICE, AND ELECTRONIC APPARATUS
    Publication number: 20090268434
    Abstract: An illumination system includes a light source unit including a light source and a circuit substrate electrically connected to the light source. The light source is placed in the circuit substrate such that at least part of the light source overlaps the circuit substrate in the thicknesswise direction of the circuit substrate.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 29, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Junya Mita, Yoshinori Momose, Akemi Maruyama, Shintaro Hama
  • Semiconductor memory device with a triple well structure
    Patent number: 6404036
    Abstract: The present invention provides a layout structure of an interconnection which feeds a fixed voltage level to a sense amplifier provided in a cell array block of a semiconductor memory device, wherein the interconnection selectively extends only an inside of an outside edge of a second conductivity type outside well region provided along one peripheral side of a first conductivity type well region, in which the cell array block is provided.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: June 11, 2002
    Assignee: NEC Corporation
    Inventor: Akemi Maruyama
  • Semiconductor memory device with a triple well structure
    Publication number: 20010006247
    Abstract: The present invention provides a layout structure of an interconnection which feeds a fixed voltage level to a sense amplifier provided in a cell array block of a semiconductor memory device, wherein the interconnection selectively extends only an inside of an outside edge of a second conductivity type outside well region provided along one peripheral side of a first conductivity type well region, in which the cell array block is provided.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Applicant: NEC Corporation
    Inventor: Akemi Maruyama
  • Color recording method and a color printer
    Patent number: 5914792
    Abstract: In a color recording method of the invention, first, a first RGB signal and a second RGB signal are, respectively, converted into a first YMC signal and a second YMC signal. Next, in case that the color components Y, M and C shown by said second YMC signal do not exceed, respectively, the color components Y, M and C shown by said first YMC signal, printing is performed by means of a third YMC signal obtained by subtracting the color components Y, M and C of said second YMC signal, respectively, from the color components Y, M and C of said first YMC signal. On the other hand, in case that any of the color components Y, M and C shown by said second YMC signal exceeds its corresponding color component of the color components of Y, M and C shown by said first YMC signal, printing is performed by means of a fourth YMC signal for performing printing with said first YMC signal after performing printing with white.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: June 22, 1999
    Assignee: NEC Corporation
    Inventor: Akemi Maruyama