Patents by Inventor Akihito Nakazawa

Akihito Nakazawa 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).

  • Medical fabric
    Patent number: 11065098
    Abstract: Provided is a medical fabric that is thin, and has both high tear strength and low water permeability. The medical fabric is characterized in that multifilament yarns having a total fineness of 7-80 dtex are disposed in the warp and weft, the single yarn fineness of at least one of the multifilament yarns among the warp and weft is 0.5 dtex or less, the twist factor A of the weft is 50-2,000, the thickness is 10-90 ?m, and the water permeability both before and after puncture by a needle is 300 cc/min/cm2 or less.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: July 20, 2021
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Akihito Nakazawa, Tokio Okuno
  • Catheter systems and methods of treating a vascular disease using the same
    Patent number: 10806564
    Abstract: The present invention relates to catheter systems and methods of treating a vascular disease using the same.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 20, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Tetsuko Takahashi, Akihito Nakazawa, Keiichi Toyoda
  • Catheter Systems and Methods of Treating a Vascular Disease Using the Same
    Publication number: 20190060053
    Abstract: The present invention relates to catheter systems and methods of treating a vascular disease using the same.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Tetsuko Takahashi, Akihito Nakazawa, Keiichi Toyoda
  • Medical Fabric
    Publication number: 20190015192
    Abstract: Provided is a medical fabric that is thin, and has both high tear strength and low water permeability. The medical fabric is characterized in that multifilament yarns having a total fineness of 7-80 dtex are disposed in the warp and weft, the single yarn fineness of at least one of the multifilament yarns among the warp and weft is 0.5 dtex or less, the twist factor A of the weft is 50-2,000, the thickness is 10-90 ?m, and the water permeability both before and after puncture by a needle is 300 cc/min/cm2 or less.
    Type: Application
    Filed: January 18, 2016
    Publication date: January 17, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Akihito Nakazawa, Tokio Okuno