Patents by Inventor Manoel Felician da Silva Júnior

Manoel Felician da Silva Júnior 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).

  • Optical transducer and method for the simultaneous measurement of pressure and temperature in oil and gas wells
    Patent number: 7308165
    Abstract: An optical transducer 100, 200 and method for the simultaneous measurement of downhole pressure and temperature in a single- or multi-point configuration including a body 10a/10b with an elastic membrane 50 onto which at least one Bragg grating 60a/60b is attached, and at least an additional Bragg grating 60b/60a contained on the same optical fiber 30. The elastic membrane 50 conveys strain proportional to the pressure and temperature conditions to which is submitted said transducer to at least one Bragg grating 60a/60b, the portion of light not reflected by the Bragg gratings 60a, 60b continues along the remaining of the optical fiber 30.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: December 11, 2007
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Jose Luiz Arias Vidal, Manoel Felician da Silva Júnior, Ricardo Munoz Freitas, Arthur Martins Barbosa Braga, Luiz Carlos Guedes Valente, Rogério Dias Regazzi, Alexandre Sant'Anna Ribeiro, Lincoln Homero Thomé Ferreira, Joao Luiz dos Santos Lorenzo