Patents by Inventor Katsuya OHSHIMA

Katsuya OHSHIMA 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).

  • VISCOSITY ESTIMATION DEVICE AND VISCOSITY ESTIMATION METHOD
    Publication number: 20220214257
    Abstract: A viscosity estimation device includes: a current detector detecting a drive current supplied to an induction motor which stirs a substance due to rotation of a rotating shaft which is rotationally driven; a rotation detector detecting rotation of the rotating shaft; and a calculator obtaining a viscosity correlation value, which is a value having a correlation with a viscosity of the substance, using a detection result of the current detector and a detection result of the rotation detector.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 7, 2022
    Inventors: Hirofumi OKAMOTO, Eiji TAYA, Katsuya OHSHIMA
  • Optical scanner, display system, and mobile object
    Patent number: 11112603
    Abstract: An optical scanner includes a light source to emit irradiation light, a light deflector to scan the irradiation light emitted from the light source in a first scanning direction and in a second scanning direction intersecting with the first scanning direction, a photodetector to detect the irradiation light when the light deflector scans a detection field, and circuitry to turn on the light source in a first irradiation field scanned by the light deflector from the detection field to an end in the first scanning direction and turn on the light source in a second irradiation field scanned by the light deflector from the end in the first scanning direction towards the detection field, and cause an edge of the first irradiation field on the detection field side to move to get close to the detection field from a position away from the detection field.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: September 7, 2021
    Assignee: Ricoh Company, Ltd.
    Inventor: Katsuya Ohshima
  • OPTICAL SCANNER, DISPLAY SYSTEM, AND MOBILE OBJECT
    Publication number: 20200296248
    Abstract: An optical scanner includes a light source to emit irradiation light, a light deflector to scan the irradiation light emitted from the light source in a first scanning direction and in a second scanning direction intersecting with the first scanning direction, a photodetector to detect the irradiation light when the light deflector scans a detection field, and circuitry to turn on the light source in a first irradiation field scanned by the light deflector from the detection field to an end in the first scanning direction and turn on the light source in a second irradiation field scanned by the light deflector from the end in the first scanning direction towards the detection field, and cause an edge of the first irradiation field on the detection field side to move to get close to the detection field from a position away from the detection field.
    Type: Application
    Filed: January 21, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventor: Katsuya OHSHIMA