Patents by Inventor Sumit Sarkar

Sumit Sarkar 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).

  • Electric cable
    Patent number: 6600108
    Abstract: A cable includes an electrical conductor, a first insulating jacket disposed adjacent the electrical conductor and having a first relative permittivity, and a second insulating jacket disposed adjacent the first insulating jacket and having a second relative permittivity that is less than the first relative permittivity. A method includes providing an electrical conductor, extruding a first insulating jacket having a first relative permittivity over the electrical conductor, and extruding a second insulating jacket having a second relative permittivity over the electrical conductor, wherein the second relative permittivity is less than the first relative permittivity.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: July 29, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Ravicharan Mydur, Joseph P. Varkey, Sumit Sarkar, Willem A. Wijnberg