Patents by Inventor Hiroto Takesue

Hiroto Takesue 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).

  • Intra-liquid optical measuring sensor and contamination preventing method
    Patent number: 5673341
    Abstract: An intra-liquid optical measuring sensor is provided having an optical fiber including a cladding in the form of a hollow tube, and a core. The core includes both a solid portion, and a liquid portion at an end of the core, which latter portion serves as the sensing portion of the fiber. The liquid portion has a light transmitting liquid substance therein.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: September 30, 1997
    Assignee: NEC Corporation
    Inventors: Hiroto Takesue, Tsugio Shimono