Patents by Inventor Robert B Logan

Robert B Logan 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 of preventing hydrogen darkening of optic fibre
    Patent number: 7561776
    Abstract: A method of preventing hydrogen darkening of optic fiber, which includes a step of providing a protective barrier of hydrogen free flowing gas around the optic fiber, such that the flowing gas sweeps away hydrogen.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: July 14, 2009
    Assignee: Petrospec Engineering Ltd.
    Inventors: Gerald V Chalifoux, Robert B Logan
  • Braided thermocouple cable bundle
    Patent number: 7290601
    Abstract: A product consisting of a plurality of thermocouple cables braided or wound and covered with protective armour, thereby forming a braided bundle. The product is used in accordance with a method involving a further step of inserting the braided bundle into a well.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: November 6, 2007
    Assignee: Petrospec Engineering Ltd.
    Inventors: Gerald V Chalifoux, Robert B Logan