Patents by Inventor Tatsuya Murakawa

Tatsuya Murakawa 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).

  • Fitting, ferrule, and ferrule manufacturing method
    Patent number: 11092267
    Abstract: A fitting to be connected to a pipe includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space formed by an inner circumferential surface of the first member, an inner circumferential surface of the second member, and an outer circumferential surface of the pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: August 17, 2021
    Assignee: IHARA SCIENCE CORPORATION
    Inventors: Shinji Fukaya, Osamu Yamaguchi, Tatsuya Murakawa
  • FITTING, FERRULE, AND FERRULE MANUFACTURING METHOD
    Publication number: 20180066775
    Abstract: A fitting to be connected to a pipe includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space formed by an inner circumferential surface of the first member, an inner circumferential surface of the second member, and an outer circumferential surface of the pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Applicant: IHARA SCIENCE CORPORATION
    Inventors: Shinji Fukaya, Osamu Yamaguchi, Tatsuya Murakawa
  • Fitting, ferrule, and ferrule manufacturing method
    Patent number: 9829129
    Abstract: A fitting includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space between the first member, the second member, and a pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: November 28, 2017
    Assignee: IHARA SCIENCE CORPORATION
    Inventors: Shinji Fukaya, Osamu Yamaguchi, Tatsuya Murakawa
  • JOINT, FERRULE, AND METHOD FOR MANUFACTURING FERRULE
    Publication number: 20150167870
    Abstract: A fitting includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space between the first member, the second member, and a pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule.
    Type: Application
    Filed: May 20, 2013
    Publication date: June 18, 2015
    Inventors: Shinji Fukaya, Osamu Yamaguchi, Tatsuya Murakawa