Patents by Inventor Akihiro Soga

Akihiro Soga 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).

  • Image forming device using polarized light
    Patent number: 4905045
    Abstract: An image forming device such as a copying machine provides a linearly polarized beam of light to be made incident on a document to be scanned which is placed on a document table. A transparent cover with a polarization filter attached to it covers the document such that the user can ascertain, without too much light entering his eyes, whether the document is placed at a correct position on the table.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: February 27, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiromu Sasaki, Akihiro Soga
  • Copier with variable magnification ratio
    Patent number: 4881102
    Abstract: A copier capable of varying magnification ratio moves its optical system to a position determined by an inputted value of magnification ratio only after its print switch is operated to start a copying operation.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: November 14, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaru Nishijima, Akihiro Soga
  • Shredder
    Patent number: 4873811
    Abstract: An improved shredder has a closing device stored inside of its housing or inside a door. As the door is opened to pull out a bag filled with shredded paper, the bag closing device automatically protrudes and the operator has only to grab the top parts of the bag and press them through a groove made in the bag closing device and an adhesive tape wraps around the bag to close it.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: October 17, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masayoshi Izumitani, Akihiro Soga