Patents by Inventor Okechukwu Aniemeka Uwechue

Okechukwu Aniemeka Uwechue 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).

  • Patent number: 8627721
    Abstract: An accelerometer based on the measurement of Casimir force fluctuations is described. The accelerometer comprises a sealed housing containing a vacuum or a liquid, a piezoelectric plate fixed with the sealed housing, and a mass moveable within the sealed housing located in proximity to the piezoelectric plate. The moveable mass and the piezoelectric plate each have conductive surfaces which are located from each other at a distance which creates a Casimir Effect between the movable mass and the piezoelectric plate. Fluctuations in acceleration of the moveable mass cause fluctuations in the Casimir force on the piezoelectric plate. The acceleration fluctuations cause fluctuations in an electric output of the piezoelectric plate. The fluctuations in electric output are measured and used to calculate an acceleration and direction of movement of the accelerometer or a host device in which the accelerometer is carried.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: January 14, 2014
    Assignee: BlackBerry Limited
    Inventor: Okechukwu Aniemeka Uwechue
  • Publication number: 20120095721
    Abstract: An accelerometer based on the measurement of Casimir force fluctuations is described. The accelerometer comprises a sealed housing containing a vacuum or a liquid, a piezoelectric plate fixed with the sealed housing, and a mass moveable within the sealed housing located in proximity to the piezoelectric plate. The moveable mass and the piezoelectric plate each have conductive surfaces which are located from each other at a distance which creates a Casimir Effect between the movable mass and the piezoelectric plate. Fluctuations in acceleration of the moveable mass cause fluctuations in the Casimir force on the piezoelectric plate. The acceleration fluctuations cause fluctuations in an electric output of the piezoelectric plate. The fluctuations in electric output are measured and used to calculate an acceleration and direction of movement of the accelerometer or a host device in which the accelerometer is carried.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 19, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventor: Okechukwu Aniemeka Uwechue