Patents by Inventor Phillip C. Ohl

Phillip C. Ohl 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).

  • Method and apparatus for remotely monitoring corrosion using corrosion coupons
    Patent number: 6843135
    Abstract: A method and an apparatus for remotely and automatically monitoring for corrosion of a tank, pipe, or container with a gas or liquid environment using corrosion coupons that do not have to be removed from the environment for inspection and evaluation. The coupons are designed to fail when a specified level of corrosion occurs. A permanent magnet located on a coupon sensing system inside the corrosive environment is used to transmit the failure of the coupons outside the corrosion environment and across a wall or other boundary surface without requiring a power supply.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: January 18, 2005
    Assignee: Vista Engineering Technologies LLC
    Inventors: Dennis G. Douglas, Joseph W. Maresca, Jr., Christopher M. Smith, Phillip C. Ohl
  • Method and apparatus for remotely monitoring corrosion using corrosion coupons
    Publication number: 20040055391
    Abstract: A method and an apparatus for remotely and automatically monitoring for corrosion of a tank, pipe, or container with a gas or liquid environment using corrosion coupons that do not have to be removed from the environment for inspection and evaluation. The coupons are designed to fail when a specified level of corrosion occurs. A permanent magnet located on a coupon sensing system inside the corrosive environment is used to transmit the failure of the coupons outside the corrosion environment and across a wall or other boundary surface without requiring a power supply.
    Type: Application
    Filed: June 30, 2003
    Publication date: March 25, 2004
    Inventors: Dennis G. Douglas, Joseph W. Maresca, Christopher M. Smith, Phillip C. Ohl
  • Method and apparatus for remote measurement of physical properties inside a sealed container
    Patent number: 6499353
    Abstract: A method and an apparatus for measuring the pressure or other physical quantities of a gas or a liquid in a sealed container without penetrating the container. Two permanent magnets, one located on a sensing unit inside the container and one located on a readout unit located outside the container are used to communicate the magnitude of the pressure sensed inside the container to the readout unit. No power supply is required to implement this system.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: December 31, 2002
    Assignee: Vista Research, Inc.
    Inventors: Dennis G. Douglas, Phillip C. Ohl, Alan A. Burns