Patents by Inventor Taku Konaka

Taku Konaka 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).

  • Method of producing heat-resistant crimped yarn
    Patent number: 7155893
    Abstract: The present invention relates to a method for producing a heat-resistant crimped yarn comprising: twisting yarn of a heat-resistant high functional fiber; twist-setting this twisted yarn by heat treatment; and untwisting this twist-set yarn, wherein a snarl value of the twist-set yarn is not more than 6.5.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: January 2, 2007
    Assignees: Du Pont-Toray Co., Ltd., Tokai Senko K.K.
    Inventors: Takeshi Hatano, Kazuhiko Kosuge, Mitsuhiko Tanahashi, Iori Nakabayashi, Taku Konaka, Takahiro Ito, Minoru Yamada
  • Method of producing heat-resistant crimped yarn
    Publication number: 20040016221
    Abstract: The present invention related to a method for producing a heat-resistant crimped yarn comprising twisting yarn of a heat-resistant high functional fiber, twist-setting the twisted yarn by heat treatment and untwisting the twist-set yarn, wherein a snarl value of the twist-set yarn is not more than 6.5, and provides a method for producing a heat-resistant crimped yarn which is practical in point of the productivity, the necessary equipment and the production costs. The present invention related to a method for producing a heat-resistant crimped yarn comprising twisting yarn of a heat-resistant high functional fiber, twist-setting the twisted yarn by heat treatment and untwisting the twist-set yarn, wherein a snarl value of the twist-set yarn is not more than 6.5%, and provides a method for producing a heat-resistant crimped yarn comprising which is practical in point of the productivity, the necessary equipment and the production costs.
    Type: Application
    Filed: August 6, 2003
    Publication date: January 29, 2004
    Inventors: Takeshi Hatano, Kazuhiko Kosuge, Mitsuhiko Tanahashi, Iori Nakabayashi, Taku Konaka, Takahiro Ito, Minoru Yamada