The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2006
Filed:
Oct. 24, 2003
Harold J. Vinegar, Bellaire, TX (US);
Chester Ledlie Sandberg, Palo Aklto, CA (US);
Christopher Kelvin Harris, Houston, TX (US);
Jaime Santos Son, Houston, TX (US);
Fredrick Gordon Carl, Jr., Houston, TX (US);
Harold J. Vinegar, Bellaire, TX (US);
Chester Ledlie Sandberg, Palo Aklto, CA (US);
Christopher Kelvin Harris, Houston, TX (US);
Jaime Santos Son, Houston, TX (US);
Fredrick Gordon Carl, Jr., Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A heater may include an electrical conductor. Applying alternating current to the electrical conductor may generate resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surround a non-ferromagnetic material. The heater may provide a reduced amount of heat above or near a selected temperature. A conduit may at least partially surround the electrical conductor. A centralizer may maintain a separation distance between the electrical conductor and the conduit.