Patents by Inventor Ronald George Friend

Ronald George Friend 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).

  • Pressure relief valve monitoring device
    Publication number: 20020029808
    Abstract: A pressure relief valve monitoring device is provided. The monitoring device includes a sensor input module located proximate to a pressure relief valve, a microcontroller located within the sensor input module, and a real time clock/calendar also located within the sensor input module.
    Type: Application
    Filed: September 4, 2001
    Publication date: March 14, 2002
    Applicant: Anderson Greenwood, LP
    Inventors: Ronald George Friend, Michael Allen Jones
  • Pressure relief valve monitoring device
    Patent number: 6283138
    Abstract: A pressure relief valve monitoring device is provided. The monitoring device includes a sensor input module located proximate to a pressure relief valve, a microcontroller located within the sensor input module, and a real time clock/calendar also located within the sensor input module.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: September 4, 2001
    Assignee: Anderson, Greenwood LP
    Inventors: Ronald George Friend, Michael Allen Jones