Patents by Inventor Mami Nishida

Mami Nishida 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).

  • Vibrating wire viscometers
    Patent number: 8322196
    Abstract: Vibrating wire viscometers are described. Some example vibrating wire viscometer housings include a flowline through the housing to expose a first wire to a downhole fluid, a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator, first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline, and a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid.
    Type: Grant
    Filed: August 2, 2009
    Date of Patent: December 4, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Raghu Madhavan, Yu Hatori, Mami Nishida, Sophie Nazik Godefroy, Michael Stangeland, Go Fujisawa
  • VIBRATING WIRE VISCOMETERS
    Publication number: 20110023587
    Abstract: Vibrating wire viscometers are described. Some example vibrating wire viscometer housings include a flowline through the housing to expose a first wire to a downhole fluid, a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator, first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline, and a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid.
    Type: Application
    Filed: August 2, 2009
    Publication date: February 3, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: RAGHU MADHAVAN, YU HATORI, MAMI NISHIDA, SOPHIE NAZIK GODEFROY, MICHAEL STANGELAND, GO FUJISAWA