Patents by Inventor Akito Araya

Akito Araya 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).

  • Micro-distance toss-up type absolute gravimeter
    Patent number: 6772630
    Abstract: A micro-distance toss-up type absolute gravimeter comprises a vacuum container mounted on the ground, a reference mirror supported in the vacuum container, a drop mirror to be dropped within the vacuum container, a toss-up device that tosses up the drop mirror by a constant distance, an atomic clock that can define time with a high precision, an interferometer that measures the position of the drop mirror in time series, and can acquire an interference waveform, and an operation unit that calculates gravitational acceleration based on the interference waveform obtained by the interferometer and the time defined by the atomic clock.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: August 10, 2004
    Assignee: The University of Tokyo
    Inventor: Akito Araya
  • Micro-distance toss-up type absolute gravimeter
    Publication number: 20030136190
    Abstract: A micro-distance toss-up type absolute gravimeter comprises a vacuum container mounted on the ground, a reference mirror supported in the vacuum container, a drop mirror to be dropped within the vacuum container, a toss-up device that tosses up the drop mirror by a constant distance, an atomic clock that can define time with a high precision, an interferometer that measures the position of the drop mirror in time series, and can acquire an interference waveform, and an operation unit that calculates gravitational acceleration based on the interference waveform obtained by the interferometer and the time defined by the atomic clock.
    Type: Application
    Filed: June 10, 2002
    Publication date: July 24, 2003
    Inventor: Akito Araya