Patents by Inventor Atsushi Ohsawa

Atsushi Ohsawa 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).

  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    Publication number: 20240118655
    Abstract: An object of the present disclosure is to provide an electrophotographic photosensitive member with suppressed positive ghosts, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The present disclosure provides an electrophotographic photosensitive member having a support and a photosensitive layer on the support; the photosensitive layer comprises (?) a compound represented by the formula (1), and (?) at least one selected from the group consisting of a compound represented by the formula (2) and a compound represented by the formula (3), wherein a content of the (?) with respect to a content of the (?) is 50 to 850 mass ppm in the photosensitive layer.
    Type: Application
    Filed: September 8, 2023
    Publication date: April 11, 2024
    Inventors: KUNIHIKO SEKIDO, SHUHEI IWASAKI, TATSUYA OHSAWA, NAOYUKI MATSUMOTO, ATSUSHI OKUDA, TSUTOMU NISHIDA
  • Capacitive micromachined ultrasonic transducer (cMUT) device and in-body-cavity diagnostic ultrasound system
    Patent number: 8157740
    Abstract: A capacitive micromachined ultrasonic transducer (cMUT) device, includes: a cMUT obtained by processing a silicon substrate by using a silicon micromachining technique; and an oscillator circuit having the cMUT as a capacitor, and outputting a frequency modulation signal by modulating a frequency of an oscillation signal to be output on the basis of a change of capacitance of the cMUT.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 17, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hideo Adachi, Atsushi Ohsawa, Katsuhiro Wakabayashi
  • CAPACITIVE MICROMACHINED ULTRASONIC TRANSDUCER (cMUT) DEVICE AND IN-BODY-CAVITY DIAGNOSTIC ULTRASOUND SYSTEM
    Publication number: 20080294055
    Abstract: A capacitive micromachined ultrasonic transducer (cMUT) device, comprises: a cMUT obtained by processing a silicon substrate by using a silicon micromachining technique; and an oscillator circuit having the cMUT as a capacitor, and outputting a frequency modulation signal by modulating a frequency of an oscillation signal to be output on the basis of a change of capacitance of the cMUT.
    Type: Application
    Filed: February 28, 2008
    Publication date: November 27, 2008
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hideo ADACHI, Atsushi OHSAWA, Katsuhiro WAKABAYASHI