Patents by Inventor Gerald R. Douglas

Gerald R. Douglas 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).

  • Insulating joint for electrically heated pipeline
    Patent number: 6688900
    Abstract: An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolation when materials other than hydrocarbons pass through the EIJ. The insulative liner may be extended through a knee joint. Pressure ports may be used to monitor fluid leaks and a built-in transformer may be used to monitor electrical leakage current.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Shell Oil Company
    Inventors: Ronald M. Bass, James R. Hale, Gerald R. Douglas
  • INSULATING JOINT FOR ELECTRICALLY HEATED PIPELINE
    Publication number: 20030235471
    Abstract: An Electrical Insulating Joint (EIJ) for a pipe-in-pipe electrically heated pipeline is provided. A ceramic disk under compressive load and dielectrics in an annulus provide electrical isolation and mechanical strength. An insulative liner extends around the ceramic disk to provide electrical isolation when materials other than hydrocarbons pass through the EIJ. The insulative liner may be extended through a knee joint. Pressure ports may be used to monitor fluid leaks and a built-in transformer may be used to monitor electrical leakage current.
    Type: Application
    Filed: June 25, 2002
    Publication date: December 25, 2003
    Inventors: Ronald M. Bass, James R. Hale, Gerald R. Douglas