Patents by Inventor Naoki Kawanaka

Naoki Kawanaka 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).

  • Moisture-absorbing and deodorizing fiber, method for manufacturing the same, and fiber structure containing the same
    Patent number: 9254345
    Abstract: In the prior art, there has not been provided a fiber that can quickly and persistently deodorize and absorb the smell and the damp feeling due to body fluid generated from the body. The present invention provides a fiber having such property, and specifically provides a moisture-absorbing and deodorizing fiber, characterized in that, a basic polymer is ionically-bonded in an amount of 0.2 to 4 mmol/g as an amount of amino group onto the surface of a moisture-absorbing fiber having a crosslinked structure and also having 3 to 8 mmol/g of carboxyl group.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: February 9, 2016
    Assignee: JAPAN EXLAN COMPANY LIMITED
    Inventor: Naoki Kawanaka
  • Padding
    Patent number: 9040631
    Abstract: The present invention provides padding which is suitable as bedding and clothing items having both exothermic property upon moisture absorption and bulkiness in high levels and being able to give comfortable environment to human body. The present invention relates to a padding containing 25 to 85% by weight of polyester fiber, characterized in that the padding contains 15 to 75% by weight of a cross-linked polyacrylate fiber of a magnesium salt type and/or a calcium salt type.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 26, 2015
    Assignees: TOYOBO CO., LTD., JAPAN EXLAN COMPANY LIMITED
    Inventors: Atsushi Kato, Naoki Kawanaka, Masao Ieno
  • PADDING
    Publication number: 20150133607
    Abstract: The present invention provides padding which is suitable as bedding and clothing items having both exothermic property upon moisture absorption and bulkiness in high levels and being able to give comfortable environment to human body. The present invention relates to a padding containing 25 to 85% by weight of polyester fiber, characterized in that the padding contains 15 to 75% by weight of a cross-linked polyacrylate fiber of a magnesium salt type and/or a calcium salt type.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 14, 2015
    Applicants: JAPAN EXLAN COMPANY LIMITED, TOYOBO CO., LTD.
    Inventors: Atsushi Kato, Naoki Kawanaka, Masao Ieno
  • MOISTURE-ABSORBING AND DEODORIZING FIBER, METHOD FOR MANUFACTURING THE SAME, AND FIBER STRUCTURE CONTAINING THE SAME
    Publication number: 20140314828
    Abstract: In the prior art, there has not been provided a fiber that can quickly and persistently deodorize and absorb the smell and the damp feeling due to body fluid generated from the body. The present invention provides a fiber having such property, and specifically provides a moisture-absorbing and deodorizing fiber, characterized in that, a basic polymer is ionically-bonded in an amount of 0.2 to 4 mmol/g as an amount of amino group onto the surface of a moisture-absorbing fiber having a crosslinked structure and also having 3 to 8 mmol/g of carboxyl group.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 23, 2014
    Applicant: Japan Exlan Company Limited
    Inventor: Naoki Kawanaka