Patents by Inventor Takaaki Furumochi

Takaaki Furumochi 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).

  • Glass for multilayer film filter and method for manufacturing the glass
    Patent number: 7151063
    Abstract: Glass can have a high thermal expansion coefficient when it is made up of SiO2, B2O3, Na2O, K2O, MgO and Al2O3; contains a partial crystal; and has a mean linear expansion coefficient not lower than of 125×10?7K?1 in a temperature range of 50° C. to 150° C. Using this glass as a substrate for a multilayer film filter can fully reduce temperature fluctuations in the filter properties.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: December 19, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Furukawa, Takaaki Furumochi
  • Optical filter module, and manufacturing method thereof
    Patent number: 7044649
    Abstract: An optical filter module having a multilayered filter inserted in the paths of optical waveguides thereof. In the optical filter module, precise V-shaped grooves are formed on the principle plane of a plane substrate so that optical fibers protrude therefrom. The optical fibers are mounted on the plane substrate. After the multilayered filter is inserted in a filter insertion groove that is formed so as to intersect the V-shaped grooves on the plane substrate, the filter is sandwiched and clamped by two sheets of covers provided on the plane substrate. Provided is a method of precisely mounting the filter that improves the optical axis adjustment between input and output optical fibers and reduces misregistration of the filter to be inserted.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: May 16, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takaaki Furumochi, Kazunari Nishihara, Tetsuro Shimamura, Mikio Degawa
  • Glass for multilayer film filter and method for manufacturing the glass
    Publication number: 20050239627
    Abstract: Glass can have a high thermal expansion coefficient when it is made up of SiO2, B2O3, Na2O, K2O, MgO and Al2O3; contains a partial crystal; and has a mean linear expansion coefficient not lower than of 125×10?7K?1 in a temperature range of 50° C. to 150° C. Using this glass as a substrate for a multilayer film filter can fully reduce temperature fluctuations in the filter properties.
    Type: Application
    Filed: July 13, 2004
    Publication date: October 27, 2005
    Applicant: Matsushita Electric Indus. Co., Ltd.
    Inventors: Shigeo Furukawa, Takaaki Furumochi
  • Optical filter module, and manufacturing method thereof
    Publication number: 20040114876
    Abstract: An optical filter module having a multilayered filter inserted in the paths of optical waveguides thereof. In the optical filter module, precise V-shaped grooves are formed on the principle plane of a plane substrate so that optical fibers protrude therefrom. The optical fibers are mounted on the plane substrate. After the multilayered filter is inserted in a filter insertion groove that is formed so as to intersect the V-shaped grooves on the plane substrate, the filter is sandwiched and clamped by two sheets of covers provided on the plane substrate. Provided is a method of precisely mounting the filter that improves the optical axis adjustment between input and output optical fibers and reduces misregistration of the filter to be inserted.
    Type: Application
    Filed: July 29, 2003
    Publication date: June 17, 2004
    Inventors: Takaaki Furumochi, Kazunari Nishihara, Tetsuro Shimamura, Mikio Degawa